Podcast
Questions and Answers
What is the total number of bones in the upper limb?
What is the total number of bones in the upper limb?
How many major arteries are found in the upper limb?
How many major arteries are found in the upper limb?
Which component is NOT typically included when describing the upper limb?
Which component is NOT typically included when describing the upper limb?
What is the approximate number of major nerves in the upper limb?
What is the approximate number of major nerves in the upper limb?
Signup and view all the answers
How many muscles are found in the upper limb?
How many muscles are found in the upper limb?
Signup and view all the answers
Which of the following is the correct number of joints in the upper limb, excluding intercarpal joints?
Which of the following is the correct number of joints in the upper limb, excluding intercarpal joints?
Signup and view all the answers
What anatomical structure is primarily responsible for communication within the upper limb?
What anatomical structure is primarily responsible for communication within the upper limb?
Signup and view all the answers
How many major veins are present in the upper limb?
How many major veins are present in the upper limb?
Signup and view all the answers
Which movement is NOT associated with the shoulder joint?
Which movement is NOT associated with the shoulder joint?
Signup and view all the answers
What is the primary function of the radioulnar joints?
What is the primary function of the radioulnar joints?
Signup and view all the answers
Which joints allow for adduction and abduction movements in the hand?
Which joints allow for adduction and abduction movements in the hand?
Signup and view all the answers
Which statement about the wrist joint is incorrect?
Which statement about the wrist joint is incorrect?
Signup and view all the answers
Which joint is primarily responsible for flexion and extension of the fingers?
Which joint is primarily responsible for flexion and extension of the fingers?
Signup and view all the answers
Which tendon is most likely to be involved in shoulder pain during initial abduction of the arm?
Which tendon is most likely to be involved in shoulder pain during initial abduction of the arm?
Signup and view all the answers
In cases of shoulder pain that affects arm abduction, which muscle can be implicated apart from the supraspinatus?
In cases of shoulder pain that affects arm abduction, which muscle can be implicated apart from the supraspinatus?
Signup and view all the answers
Which of these tendons primarily supports the supraspinatus tendon in shoulder movement?
Which of these tendons primarily supports the supraspinatus tendon in shoulder movement?
Signup and view all the answers
Which condition is least likely to cause pain during the initial abduction of the arm?
Which condition is least likely to cause pain during the initial abduction of the arm?
Signup and view all the answers
What is the most likely mechanism of injury associated with supraspinatus tendon pain?
What is the most likely mechanism of injury associated with supraspinatus tendon pain?
Signup and view all the answers
Which nerve supplies the anterior compartment of the arm?
Which nerve supplies the anterior compartment of the arm?
Signup and view all the answers
What is the main action of the posterior compartment in the forearm?
What is the main action of the posterior compartment in the forearm?
Signup and view all the answers
Which of the following compartments in the hand is responsible for the movement of the little finger?
Which of the following compartments in the hand is responsible for the movement of the little finger?
Signup and view all the answers
Which of the following nerves supplies the median and ulnar nerves in the forearm?
Which of the following nerves supplies the median and ulnar nerves in the forearm?
Signup and view all the answers
What is the primary bone that forms the middle segment of the upper limb?
What is the primary bone that forms the middle segment of the upper limb?
Signup and view all the answers
What primary action is associated with the anterior compartment of the arm?
What primary action is associated with the anterior compartment of the arm?
Signup and view all the answers
Which structures form the pectoral (shoulder) girdle?
Which structures form the pectoral (shoulder) girdle?
Signup and view all the answers
Which of the following actions is primarily performed by the muscles supplied by the radial nerve?
Which of the following actions is primarily performed by the muscles supplied by the radial nerve?
Signup and view all the answers
Which bones are included in the composition of the upper limb?
Which bones are included in the composition of the upper limb?
Signup and view all the answers
What is the total number of phalanges present in the upper limb?
What is the total number of phalanges present in the upper limb?
Signup and view all the answers
How many groups of bones make up the radius area in the upper limb?
How many groups of bones make up the radius area in the upper limb?
Signup and view all the answers
Which joint movement is associated with the elevation of the upper limb?
Which joint movement is associated with the elevation of the upper limb?
Signup and view all the answers
Identify the correct structure associated with the term 'cubital fossa' in the upper limb.
Identify the correct structure associated with the term 'cubital fossa' in the upper limb.
Signup and view all the answers
What is the role of the scapula in the upper limb structure?
What is the role of the scapula in the upper limb structure?
Signup and view all the answers
Which of the following is true regarding the metacarpal bones?
Which of the following is true regarding the metacarpal bones?
Signup and view all the answers
Which region is directly associated with the humerus?
Which region is directly associated with the humerus?
Signup and view all the answers
Study Notes
Upper Limb Overview
- The upper limb consists of 32 bones, 26 joints (excluding intercarpal joints), 60 muscles, 17 major nerves, 4 main arteries (excluding branches) and 4 main veins (excluding tributaries)
Regions and Compartments
- The upper limb is divided into the arm, forearm, and hand
- The arm has anterior (flexor) and posterior (extensor) compartments
- The anterior compartment is responsible for flexion and is supplied by the musculocutaneous nerve
- The posterior compartment is responsible for extension and is supplied by the radial nerve
- The forearm also has anterior (flexor) and posterior (extensor) compartments
- The anterior compartment is responsible for flexion and is supplied by the median and ulnar nerves
- The posterior compartment is responsible for extension and is supplied by the deep radial nerve
- The hand has thenar, central, and hypothenar compartments
- The thenar compartment is responsible for thumb movement and is supplied by the median nerve
- The central compartment is responsible for finger movement and is supplied by the median and ulnar nerves
- The hypothenar compartment is responsible for little finger movement and is supplied by the ulnar nerve
Upper Limb Bones
- The upper limb is divided into four segments:
- Pectoral (Shoulder) Girdle: Consists of the clavicle (anteriorly) and scapula (posteriorly)
- Arm: Contains the humerus
- Forearm: Contains the ulna (medially) and the radius (laterally)
-
Hand: Consists of three groups
- 8 carpal bones
- 5 metacarpal bones
- 14 phalanges
Upper Limb Joints
- Shoulder (Pectoral) Girdle: allows for elevation and depression of the shoulder region
- Shoulder Joint: allows for flexion, extension, adduction, abduction, medial and lateral rotation, and circumduction of the arm
- Elbow: allows for flexion and extension of the forearm
- Radioulnar Joints: allows for pronation and supination of the forearm
- Wrist Joint: allows for flexion, extension, adduction, abduction, and circumduction of the hand
- Metacarpophalangeal Joints (MCPJ): allows for flexion, extension, adduction, and abduction of the fingers
- Interphalangeal Joints (IPJ): allows for flexion and extension of the phalanges
Key Facts
- The Supraspinatus tendon is commonly affected in cases of severe pain during initial abduction of the arm.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Related Documents
Description
This quiz covers the anatomy of the upper limb, including its bones, joints, muscles, nerves, and blood supply. Explore the divisions and compartments of the arm, forearm, and hand, and their respective functions and innervations. Test your knowledge on the complexities of upper limb anatomy.
