Podcast
Questions and Answers
Which bone is located in the upper arm?
Which bone is located in the upper arm?
- Humerus (correct)
- Scapula
- Clavicle
- Ulna
How many carpal bones are in the human wrist?
How many carpal bones are in the human wrist?
- 6
- 7
- 5
- 8 (correct)
Which two bones are located in the forearm?
Which two bones are located in the forearm?
- Metacarpals and Phalanges
- Humerus and Scapula
- Clavicle and Humerus
- Radius and Ulna (correct)
How many phalanges are in the human hand?
How many phalanges are in the human hand?
Which bone connects the arm to the body at the shoulder?
Which bone connects the arm to the body at the shoulder?
What type of bone is the scapula?
What type of bone is the scapula?
Which joint connects the scapula with the clavicle?
Which joint connects the scapula with the clavicle?
Which joint involves the articulation between the scapula and the humerus?
Which joint involves the articulation between the scapula and the humerus?
Where does the scapula articulate with the posterior wall?
Where does the scapula articulate with the posterior wall?
Which of the following is NOT an articulation point for the scapula?
Which of the following is NOT an articulation point for the scapula?
Which part of the humerus articulates with the scapula?
Which part of the humerus articulates with the scapula?
Which structure is found on the anterior view of the humerus?
Which structure is found on the anterior view of the humerus?
What is the role of the head of the humerus?
What is the role of the head of the humerus?
Which feature is not found on the posterior view of the humerus?
Which feature is not found on the posterior view of the humerus?
What does the lower end of the humerus form when articulated with the radius and ulna?
What does the lower end of the humerus form when articulated with the radius and ulna?
How many carpal bones are in the hand?
How many carpal bones are in the hand?
The thumb has how many phalanges?
The thumb has how many phalanges?
Each finger (excluding the thumb) is composed of how many phalanges?
Each finger (excluding the thumb) is composed of how many phalanges?
How many bones are there in the metacarpals?
How many bones are there in the metacarpals?
How many total phalanges are there in the hand?
How many total phalanges are there in the hand?
Where is the upper limb associated?
Where is the upper limb associated?
What suspends the upper limb from the trunk?
What suspends the upper limb from the trunk?
What does SCJ stand for in the context of the upper limb?
What does SCJ stand for in the context of the upper limb?
Which joint helps suspend the upper limb from the trunk?
Which joint helps suspend the upper limb from the trunk?
In addition to the SCJ, what else suspends the upper limb from the trunk?
In addition to the SCJ, what else suspends the upper limb from the trunk?
Which muscle is a part of the rotator cuff?
Which muscle is a part of the rotator cuff?
Which of the following muscles is NOT part of the rotator cuff?
Which of the following muscles is NOT part of the rotator cuff?
What is a function of the muscles of the shoulder?
What is a function of the muscles of the shoulder?
Which muscle is responsible for initiating the abduction of the arm?
Which muscle is responsible for initiating the abduction of the arm?
How many muscles make up the rotator cuff?
How many muscles make up the rotator cuff?
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Study Notes
Upper Limb
- Associated with the lateral aspect of the lower neck and the thoracic wall
- Suspended from the trunk by muscles and the sterno-clavicular joint (SCJ)
Bones of the Upper Limb
- Scapula: a flat triangular bone
- Clavicle
- Humerus: a long bone composed of head, neck, shaft, and condyles
- Radius
- Ulna
- Carpus: 8 carpal bones
- Metacarpals: 5 metacarpal bones
- Phalanges: 14 phalanges
The Scapula
- Articulates with the clavicle (ACJ)
- Articulates with the humerus (Gleno-humeral Joint)
- Articulates with the posterior wall of the thorax (Scapulo-Thoracic Joint)
The Humerus
- Upper end articulates with the scapula (Gleno-humeral Joint)
- Lower end articulates with the radius and ulna (elbow joint)
- Composed of head, neck, shaft, and condyles
Anatomical Features of the Humerus
Anterior View
- Greater Tubercle
- Lesser Tubercle
- Head of Humerus
- Anatomical Neck
- Intertubercular Sulcus
- Radial Groove
- Deltoid Tuberosity
Posterior View
- Humerus
- Medial Epicondyle
- Trochea
- Radial Fossa
- Coronoid Fossa
- Capitulum
The Hand
- Composed of carpal bones (8), metacarpals (5), and phalanges (14)
- Each finger has 3 phalanges: proximal, intermediate, and distal
- The thumb has only 2 phalanges: proximal and distal
Muscles of the Shoulder
- Connect bones of the upper limb to the trunk
Rotator Cuff Muscles
- Subscapularis
- Supraspinatus
- Infraspinatus
- Teres minor
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