Podcast
Questions and Answers
Which bone is at risk of injury following fracture or dislocation in the upper limb?
Which bone is at risk of injury following fracture or dislocation in the upper limb?
- Scapula
- Humerus
- Radius
- Clavicle (correct)
Which nerve supplies the muscles of the upper limb and has its origin in the neck?
Which nerve supplies the muscles of the upper limb and has its origin in the neck?
- Ulnar nerve
- Axillary nerve
- Radial nerve
- Musculocutaneous nerve (correct)
Which artery supplies the upper limb and has pulses located at specific sites?
Which artery supplies the upper limb and has pulses located at specific sites?
- Ulnar artery
- Radial artery
- Brachial artery (correct)
- Axillary artery
Which nerve supplies the muscles responsible for the movements of the gleno-humeral joint?
Which nerve supplies the muscles responsible for the movements of the gleno-humeral joint?
Which nerve supplies the muscles responsible for flexion at the elbow joint?
Which nerve supplies the muscles responsible for flexion at the elbow joint?
Which nerve supplies the muscles responsible for abduction of the arm at the shoulder joint?
Which nerve supplies the muscles responsible for abduction of the arm at the shoulder joint?
Which muscle is responsible for medial rotation of the shoulder joint?
Which muscle is responsible for medial rotation of the shoulder joint?
Which ligament prevents superior displacement of the humeral head?
Which ligament prevents superior displacement of the humeral head?
Which muscle is NOT part of the rotator cuff group?
Which muscle is NOT part of the rotator cuff group?
Which muscle is responsible for flexion of the shoulder joint?
Which muscle is responsible for flexion of the shoulder joint?
Which muscle is responsible for protraction of the scapula?
Which muscle is responsible for protraction of the scapula?
Which joint articulates with the clavicle at the acromion process?
Which joint articulates with the clavicle at the acromion process?
What muscles are responsible for elevation of the scapula?
What muscles are responsible for elevation of the scapula?
What is the main attachment point of the pectoralis major muscle?
What is the main attachment point of the pectoralis major muscle?
Which bone is NOT part of the wrist and hand?
Which bone is NOT part of the wrist and hand?
What is the main function of the brachial plexus?
What is the main function of the brachial plexus?
Which nerve supplies the muscles responsible for extension at the elbow joint?
Which nerve supplies the muscles responsible for extension at the elbow joint?
Which artery supplies the upper limb and has its origin in the neck?
Which artery supplies the upper limb and has its origin in the neck?
Which nerve supplies the muscles responsible for pronation of the forearm?
Which nerve supplies the muscles responsible for pronation of the forearm?
Which muscle is responsible for adduction of the arm at the shoulder joint?
Which muscle is responsible for adduction of the arm at the shoulder joint?
Which nerve supplies the muscles responsible for supination of the forearm?
Which nerve supplies the muscles responsible for supination of the forearm?
Which muscle is responsible for abduction of the arm at the shoulder joint?
Which muscle is responsible for abduction of the arm at the shoulder joint?
Which nerve supplies the muscles responsible for extension at the elbow joint?
Which nerve supplies the muscles responsible for extension at the elbow joint?
Which ligament prevents inferior displacement of the humeral head?
Which ligament prevents inferior displacement of the humeral head?
Which muscle is responsible for lateral rotation of the shoulder joint?
Which muscle is responsible for lateral rotation of the shoulder joint?
Which muscle is responsible for retraction of the scapula?
Which muscle is responsible for retraction of the scapula?
Which nerve supplies the muscles responsible for the movements of the wrist and hand?
Which nerve supplies the muscles responsible for the movements of the wrist and hand?
Which artery supplies the upper limb and has its pulses located at the wrist?
Which artery supplies the upper limb and has its pulses located at the wrist?
Which joint articulates with the scapula at the acromion process?
Which joint articulates with the scapula at the acromion process?
Which muscle is responsible for abduction of the arm at the shoulder joint?
Which muscle is responsible for abduction of the arm at the shoulder joint?
Which nerve supplies the muscles responsible for extension of the arm at the elbow joint?
Which nerve supplies the muscles responsible for extension of the arm at the elbow joint?
Which muscle is NOT part of the rotator cuff group?
Which muscle is NOT part of the rotator cuff group?
Which nerve supplies the muscles responsible for flexion of the shoulder joint?
Which nerve supplies the muscles responsible for flexion of the shoulder joint?
Which bone is at risk of injury following fracture or dislocation in the upper limb?
Which bone is at risk of injury following fracture or dislocation in the upper limb?
Which artery supplies the upper limb and has pulses located at specific sites?
Which artery supplies the upper limb and has pulses located at specific sites?
Which nerve supplies the muscles responsible for extension at the elbow joint?
Which nerve supplies the muscles responsible for extension at the elbow joint?
Which nerve supplies the muscles responsible for flexion at the wrist joint?
Which nerve supplies the muscles responsible for flexion at the wrist joint?
Which nerve supplies the muscles responsible for abduction of the fingers?
Which nerve supplies the muscles responsible for abduction of the fingers?
Which nerve supplies the muscles responsible for opposition of the thumb?
Which nerve supplies the muscles responsible for opposition of the thumb?
Which nerve supplies the muscles responsible for adduction of the fingers?
Which nerve supplies the muscles responsible for adduction of the fingers?
Which nerve supplies the muscles responsible for pronation of the forearm?
Which nerve supplies the muscles responsible for pronation of the forearm?
Which nerve supplies the muscles responsible for supination of the forearm?
Which nerve supplies the muscles responsible for supination of the forearm?
Which nerve supplies the muscles responsible for opposition of the little finger?
Which nerve supplies the muscles responsible for opposition of the little finger?
Which nerve supplies the muscles responsible for flexion at the shoulder joint?
Which nerve supplies the muscles responsible for flexion at the shoulder joint?
Which bone is part of the wrist and hand?
Which bone is part of the wrist and hand?
Which nerve supplies the muscles responsible for flexion of the wrist and hand?
Which nerve supplies the muscles responsible for flexion of the wrist and hand?
Which artery supplies the upper limb and has its origin in the neck?
Which artery supplies the upper limb and has its origin in the neck?
Which nerve supplies the muscles responsible for extension at the wrist and hand?
Which nerve supplies the muscles responsible for extension at the wrist and hand?
Which muscle is responsible for abduction of the arm at the shoulder joint?
Which muscle is responsible for abduction of the arm at the shoulder joint?
Which nerve supplies the muscles responsible for adduction of the arm at the shoulder joint?
Which nerve supplies the muscles responsible for adduction of the arm at the shoulder joint?
Which muscle is NOT part of the rotator cuff group?
Which muscle is NOT part of the rotator cuff group?
Which joint articulates with the clavicle at the acromion process?
Which joint articulates with the clavicle at the acromion process?
Which muscle is responsible for retraction of the scapula?
Which muscle is responsible for retraction of the scapula?
Which artery supplies the upper limb and has its pulses located at the wrist?
Which artery supplies the upper limb and has its pulses located at the wrist?
Which nerve supplies the muscles responsible for extension of the arm at the elbow joint?
Which nerve supplies the muscles responsible for extension of the arm at the elbow joint?
Which nerve supplies the muscles responsible for pronation of the forearm?
Which nerve supplies the muscles responsible for pronation of the forearm?
Which nerve supplies the muscles responsible for adduction of the fingers?
Which nerve supplies the muscles responsible for adduction of the fingers?
Which nerve supplies the muscles responsible for opposition of the little finger?
Which nerve supplies the muscles responsible for opposition of the little finger?
Which joint is classified as a ball and socket joint?
Which joint is classified as a ball and socket joint?
Which ligament prevents superior displacement of the humeral head?
Which ligament prevents superior displacement of the humeral head?
Which muscle is NOT part of the rotator cuff group?
Which muscle is NOT part of the rotator cuff group?
Which muscle is responsible for flexion of the shoulder joint?
Which muscle is responsible for flexion of the shoulder joint?
Which nerve supplies the muscles responsible for abduction of the arm at the shoulder joint?
Which nerve supplies the muscles responsible for abduction of the arm at the shoulder joint?
Which bone is at risk of injury following fracture or dislocation in the upper limb?
Which bone is at risk of injury following fracture or dislocation in the upper limb?
Which artery supplies the upper limb and has its pulses located at the wrist?
Which artery supplies the upper limb and has its pulses located at the wrist?
Which nerve supplies the muscles responsible for abduction of the arm at the shoulder joint?
Which nerve supplies the muscles responsible for abduction of the arm at the shoulder joint?
Which nerve supplies the muscles responsible for flexion at the wrist joint?
Which nerve supplies the muscles responsible for flexion at the wrist joint?
Which nerve supplies the muscles responsible for extension of the arm at the elbow joint?
Which nerve supplies the muscles responsible for extension of the arm at the elbow joint?
Which nerve supplies the muscles responsible for pronation of the forearm?
Which nerve supplies the muscles responsible for pronation of the forearm?
Which nerve supplies the muscles responsible for opposition of the thumb?
Which nerve supplies the muscles responsible for opposition of the thumb?
Which nerve supplies the muscles responsible for abduction of the fingers?
Which nerve supplies the muscles responsible for abduction of the fingers?
Which nerve supplies the muscles responsible for retraction of the scapula?
Which nerve supplies the muscles responsible for retraction of the scapula?
Which nerve supplies the muscles responsible for medial rotation of the shoulder joint?
Which nerve supplies the muscles responsible for medial rotation of the shoulder joint?
Which nerve supplies the muscles responsible for lateral rotation of the shoulder joint?
Which nerve supplies the muscles responsible for lateral rotation of the shoulder joint?
Which muscle is responsible for protraction of the scapula?
Which muscle is responsible for protraction of the scapula?
Which joint articulates with the clavicle at the acromion process?
Which joint articulates with the clavicle at the acromion process?
Which artery supplies the upper limb and has its pulses located at the wrist?
Which artery supplies the upper limb and has its pulses located at the wrist?
What is the main attachment point of the pectoralis major muscle?
What is the main attachment point of the pectoralis major muscle?
Which muscle is NOT part of the rotator cuff group?
Which muscle is NOT part of the rotator cuff group?
Which bone is at risk of injury following fracture or dislocation in the upper limb?
Which bone is at risk of injury following fracture or dislocation in the upper limb?
Which muscle is responsible for medial rotation of the shoulder joint?
Which muscle is responsible for medial rotation of the shoulder joint?
Which nerve supplies the muscles responsible for pronation of the forearm?
Which nerve supplies the muscles responsible for pronation of the forearm?
Which bone is NOT part of the wrist and hand?
Which bone is NOT part of the wrist and hand?
Which nerve supplies the muscles of the upper limb and has its origin in the neck?
Which nerve supplies the muscles of the upper limb and has its origin in the neck?
What is the function of the subscapular nerve?
What is the function of the subscapular nerve?
What is the function of the thoracodorsal nerve?
What is the function of the thoracodorsal nerve?
What is the function of the triceps brachii (long head) muscle?
What is the function of the triceps brachii (long head) muscle?
What is the function of the supraspinatus muscle?
What is the function of the supraspinatus muscle?
What is the function of the infraspinatus muscle?
What is the function of the infraspinatus muscle?
What is the function of the teres minor muscle?
What is the function of the teres minor muscle?
What is the function of the subscapularis muscle?
What is the function of the subscapularis muscle?
What is the origin and insertion of the triceps brachii (long head) muscle?
What is the origin and insertion of the triceps brachii (long head) muscle?
What is the origin and insertion of the supraspinatus muscle?
What is the origin and insertion of the supraspinatus muscle?
What is the origin and insertion of the infraspinatus muscle?
What is the origin and insertion of the infraspinatus muscle?
What is the function of the latissimus dorsi muscle?
What is the function of the latissimus dorsi muscle?
Which nerve innervates the latissimus dorsi muscle?
Which nerve innervates the latissimus dorsi muscle?
What is the origin and insertion of the triceps brachii (long head) muscle?
What is the origin and insertion of the triceps brachii (long head) muscle?
What is the function of the supraspinatus muscle?
What is the function of the supraspinatus muscle?
Which nerve innervates the supraspinatus muscle?
Which nerve innervates the supraspinatus muscle?
What is the function of the infraspinatus muscle?
What is the function of the infraspinatus muscle?
Which nerve innervates the infraspinatus muscle?
Which nerve innervates the infraspinatus muscle?
What is the function of the teres minor muscle?
What is the function of the teres minor muscle?
Which nerve innervates the teres minor muscle?
Which nerve innervates the teres minor muscle?
What is the function of the subscapularis muscle?
What is the function of the subscapularis muscle?
Which muscle is responsible for protraction, depression, and medial rotation of the scapula?
Which muscle is responsible for protraction, depression, and medial rotation of the scapula?
Which muscle keeps the scapula against the thoracic wall?
Which muscle keeps the scapula against the thoracic wall?
Which muscle is responsible for elevation, lateral rotation, retraction, and depression of the scapula?
Which muscle is responsible for elevation, lateral rotation, retraction, and depression of the scapula?
Which muscle is responsible for scapula elevation?
Which muscle is responsible for scapula elevation?
Which muscle is responsible for scapula retraction and elevation?
Which muscle is responsible for scapula retraction and elevation?
Which muscle is responsible for scapula retraction and elevation?
Which muscle is responsible for scapula retraction and elevation?
Which muscle is responsible for abduction of the GH joint?
Which muscle is responsible for abduction of the GH joint?
Which muscle is responsible for flexion, adduction, and medial rotation of the GH joint?
Which muscle is responsible for flexion, adduction, and medial rotation of the GH joint?
Which muscle is responsible for flexion of the forearm and supination of the forearm?
Which muscle is responsible for flexion of the forearm and supination of the forearm?
Which muscle is responsible for flexion and adduction of the GH joint?
Which muscle is responsible for flexion and adduction of the GH joint?
What are the actions of the Pectoralis Minor muscle?
What are the actions of the Pectoralis Minor muscle?
What is the innervation of the Pectoralis Minor muscle?
What is the innervation of the Pectoralis Minor muscle?
What are the origins and insertions of the Pectoralis Minor muscle?
What are the origins and insertions of the Pectoralis Minor muscle?
What are the actions of the Serratus Anterior muscle?
What are the actions of the Serratus Anterior muscle?
What is the innervation of the Serratus Anterior muscle?
What is the innervation of the Serratus Anterior muscle?
What are the origins and insertions of the Serratus Anterior muscle?
What are the origins and insertions of the Serratus Anterior muscle?
What are the actions of the Trapezius muscle?
What are the actions of the Trapezius muscle?
What is the innervation of the Trapezius muscle?
What is the innervation of the Trapezius muscle?
What are the origins and insertions of the Trapezius muscle?
What are the origins and insertions of the Trapezius muscle?
What are the actions of the Levator Scapulae muscle?
What are the actions of the Levator Scapulae muscle?
What is the innervation of the Levator Scapulae muscle?
What is the innervation of the Levator Scapulae muscle?
What are the origins and insertions of the Levator Scapulae muscle?
What are the origins and insertions of the Levator Scapulae muscle?
What are the actions of the Rhomboid Minor muscle?
What are the actions of the Rhomboid Minor muscle?
What is the innervation of the Rhomboid Minor muscle?
What is the innervation of the Rhomboid Minor muscle?
What are the origins and insertions of the Rhomboid Minor muscle?
What are the origins and insertions of the Rhomboid Minor muscle?
What are the actions of the Rhomboid Major muscle?
What are the actions of the Rhomboid Major muscle?
What is the innervation of the Rhomboid Major muscle?
What is the innervation of the Rhomboid Major muscle?
What are the origins and insertions of the Rhomboid Major muscle?
What are the origins and insertions of the Rhomboid Major muscle?
What are the actions of the Deltoid muscle?
What are the actions of the Deltoid muscle?
What is the innervation of the Deltoid muscle?
What is the innervation of the Deltoid muscle?
What are the origins and insertions of the Deltoid muscle?
What are the origins and insertions of the Deltoid muscle?
What are the actions of the Pectoralis Major muscle?
What are the actions of the Pectoralis Major muscle?
What is the innervation of the Pectoralis Major muscle?
What is the innervation of the Pectoralis Major muscle?
What are the origins and insertions of the Pectoralis Major muscle?
What are the origins and insertions of the Pectoralis Major muscle?
What are the actions of the Biceps Brachii muscle?
What are the actions of the Biceps Brachii muscle?
What is the innervation of the Biceps Brachii muscle?
What is the innervation of the Biceps Brachii muscle?
Which layer of the placenta separates maternal and fetal blood?
Which layer of the placenta separates maternal and fetal blood?
What is the function of the chorionic villi in the placenta?
What is the function of the chorionic villi in the placenta?
When does the development of the placenta start?
When does the development of the placenta start?
What is the main role of the placenta in maternal acceptance of the fetus?
What is the main role of the placenta in maternal acceptance of the fetus?
Which hormone maintains the corpus luteum and suppresses the maternal immune system?
Which hormone maintains the corpus luteum and suppresses the maternal immune system?
Which hormone enlarges the uterus, develops breasts, and later relaxes the pelvic ligaments?
Which hormone enlarges the uterus, develops breasts, and later relaxes the pelvic ligaments?
Which hormone maintains the functional endometrium, quietens the uterus, develops breasts, and increases respiratory tidal volume?
Which hormone maintains the functional endometrium, quietens the uterus, develops breasts, and increases respiratory tidal volume?
Which hormone decreases glucose and increases fatty acid metabolism in the mother and develops breasts?
Which hormone decreases glucose and increases fatty acid metabolism in the mother and develops breasts?
Which one of these is true about placentation?
Which one of these is true about placentation?
Which one of these describes the impact of pregnancy and placental hormones on the maternal body systems?
Which one of these describes the impact of pregnancy and placental hormones on the maternal body systems?
Which one of these is true about sexual differentiation of the reproductive tract?
Which one of these is true about sexual differentiation of the reproductive tract?
Which nerve innervates the infraspinatus muscle?
Which nerve innervates the infraspinatus muscle?
Which muscle is responsible for forearm extension at the elbow?
Which muscle is responsible for forearm extension at the elbow?
Which muscle is a rotator cuff muscle that initiates GH abduction (first 15Ëš)?
Which muscle is a rotator cuff muscle that initiates GH abduction (first 15Ëš)?
Which muscle is responsible for scapula protraction, depression, and medial rotation?
Which muscle is responsible for scapula protraction, depression, and medial rotation?
Which muscle is responsible for scapula protraction, lateral rotation, and keeping the scapula against the thoracic wall?
Which muscle is responsible for scapula protraction, lateral rotation, and keeping the scapula against the thoracic wall?
Which muscle is responsible for scapula elevation, lateral rotation, retraction, and depression?
Which muscle is responsible for scapula elevation, lateral rotation, retraction, and depression?
Which muscle is responsible for scapula retraction and elevation?
Which muscle is responsible for scapula retraction and elevation?
Which one of these is true about the physiological changes during puberty in males and females?
Which one of these is true about the physiological changes during puberty in males and females?
What is the normal age range for the initial changes of puberty in boys and girls?
What is the normal age range for the initial changes of puberty in boys and girls?
Where do the maturational changes during puberty take place and what other signaling molecules might be involved?
Where do the maturational changes during puberty take place and what other signaling molecules might be involved?
Based on changes in feedback due to changes in follicle number, what would you predict to be the relative postmenopausal levels of FSH and LH compared to the time before menopause?
Based on changes in feedback due to changes in follicle number, what would you predict to be the relative postmenopausal levels of FSH and LH compared to the time before menopause?
During the perimenopause, what happens to follicle recruitment, ovulation, hormones, and menses?
During the perimenopause, what happens to follicle recruitment, ovulation, hormones, and menses?
What is the ultimate result of accelerated depletion of ovarian follicles during perimenopause?
What is the ultimate result of accelerated depletion of ovarian follicles during perimenopause?
What is the hypothesis regarding age-related changes in the central nervous system during perimenopause?
What is the hypothesis regarding age-related changes in the central nervous system during perimenopause?
Which process is responsible for the production of sperm cells?
Which process is responsible for the production of sperm cells?
What is the role of the hypothalamic-pituitary-testicular axis in spermatogenesis?
What is the role of the hypothalamic-pituitary-testicular axis in spermatogenesis?
What is the function of the male accessory sex glands in reproductive process?
What is the function of the male accessory sex glands in reproductive process?
Where are the testis and epididymis located?
Where are the testis and epididymis located?
What are the characteristics of spermatozoa?
What are the characteristics of spermatozoa?
What is the function of oocytes in the reproductive process?
What is the function of oocytes in the reproductive process?
What is the approximate length of the testis?
What is the approximate length of the testis?
What is the primary function of gametes in reproductive process?
What is the primary function of gametes in reproductive process?
What is the main process involved in gametogenesis?
What is the main process involved in gametogenesis?
What is the function of semen in the reproductive process?
What is the function of semen in the reproductive process?
Which gland secretes a milky acidic fluid containing citrate, enzymes, and prostate specific antigen (activates sperm)?
Which gland secretes a milky acidic fluid containing citrate, enzymes, and prostate specific antigen (activates sperm)?
What is the function of the bulbourethral glands in the male reproductive system?
What is the function of the bulbourethral glands in the male reproductive system?
Which component of semen stimulates contraction in the female reproductive tract, facilitating sperm uptake?
Which component of semen stimulates contraction in the female reproductive tract, facilitating sperm uptake?
What is the typical volume of semen in a single ejaculate?
What is the typical volume of semen in a single ejaculate?
Which of the following is NOT a function of semen in the male reproductive system?
Which of the following is NOT a function of semen in the male reproductive system?
What is the main function of the prostate gland in the male reproductive system?
What is the main function of the prostate gland in the male reproductive system?
Which accessory gland in the male reproductive system secretes a thick clear alkaline mucus?
Which accessory gland in the male reproductive system secretes a thick clear alkaline mucus?
What is the main function of the seminal vesicles in the male reproductive system?
What is the main function of the seminal vesicles in the male reproductive system?
Which component of semen enhances sperm motility?
Which component of semen enhances sperm motility?
What is the approximate concentration of sperm in semen?
What is the approximate concentration of sperm in semen?
Which cells in the testes produce androgens such as testosterone?
Which cells in the testes produce androgens such as testosterone?
Where does sperm undergo further maturation and acquire motility and fertilization ability?
Where does sperm undergo further maturation and acquire motility and fertilization ability?
What is the temperature requirement for spermatogenesis?
What is the temperature requirement for spermatogenesis?
What is the purpose of the pampiniform plexus in the spermatic cord?
What is the purpose of the pampiniform plexus in the spermatic cord?
Which part of the epididymis is responsible for sperm storage for several months?
Which part of the epididymis is responsible for sperm storage for several months?
What is the ploidy and DNA copy number of primary spermatocytes?
What is the ploidy and DNA copy number of primary spermatocytes?
What is the process called when spermatids change from round to elongated cells with an acrosome and flagellum?
What is the process called when spermatids change from round to elongated cells with an acrosome and flagellum?
Which hormone stimulates the secretion of testosterone?
Which hormone stimulates the secretion of testosterone?
Which glands produce the bulk of the seminal plasma?
Which glands produce the bulk of the seminal plasma?
What does the seminal vesicle secrete during ejaculation?
What does the seminal vesicle secrete during ejaculation?
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Study Notes
Upper Limb Anatomy and Function
- The scaphoid bone is at risk of injury following a fracture or dislocation in the upper limb.
- The brachial plexus provides nerve supply to the upper limb muscles, originating in the neck.
- The subclavian artery supplies the upper limb, with pulses felt at specific sites including the wrist.
- The axillary nerve innervates muscles responsible for movements of the glenohumeral joint.
- The musculocutaneous nerve supplies muscles that enable flexion at the elbow joint.
- The suprascapular nerve is responsible for abduction of the arm at the shoulder joint.
- The subscapularis muscle mediates medial rotation of the shoulder joint.
- The glenohumeral ligament prevents superior displacement of the humeral head.
- The pectoralis major is the primary muscle responsible for flexion of the shoulder joint.
- The serratus anterior muscle is responsible for protraction of the scapula.
Joint and Muscle Interactions
- The acromioclavicular joint articulates with the clavicle at the acromion process.
- Muscles responsible for elevation of the scapula include the trapezius andlevator scapulae.
- The sternum is the main attachment point of the pectoralis major muscle.
- The pisiform bone is not part of the wrist and hand.
- The function of the brachial plexus is to provide sensory and motor innervation to the upper limb.
- The radial nerve supplies muscles responsible for extension at the elbow joint.
Nerve and Blood Supply
- The brachial artery supplies the upper limb, originating in the neck with pulses detectable at specific sites.
- The median nerve is responsible for pronation of the forearm.
- The deltoid muscle mediates abduction of the arm at the shoulder joint.
- The ulnar nerve facilitates adduction of the fingers.
- Muscles responsible for retraction of the scapula include the rhomboids.
- The thoracodorsal nerve innervates the latissimus dorsi muscle.
Rotator Cuff and Movements
- Muscles NOT part of the rotator cuff group include the pectoralis major and latissimus dorsi.
- The infraspinatus and teres minor muscles are both involved in lateral rotation of the shoulder joint.
- The subscapular nerve supplies muscles responsible for medial rotation.
General Functions
- The triceps brachii (long head) allows for extension of the arm at the elbow joint.
- The supraspinatus muscle plays a crucial role in initiating arm abduction.
- The latissimus dorsi muscle is responsible for extension, adduction, and medial rotation of the shoulder.
- The function of the subscapularis muscle includes medial rotation of the arm.
Key Relationships
- The elbow joint allows for flexion and extension, with associated muscles innervated by various nerves such as the median and radial nerves.
- The wrist is supplied by arteries that also provide pulse locations at the wrist, specifically the radial and ulnar arteries.
- The glenohumeral joint is classified as a ball and socket joint, allowing a wide range of movement.
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