Elbow

Question 1

Name the Origin, Insertion, Action, and Innervation of the: Biceps Brachii

Answer 1

O: Long head- Supraglenoid tubercle of scap, Short head-Coracoid process of scap.
I: Bicipital tuberosity of radius
N: Musculocutaneous Nerve
A: Elbow flexion, forearm supination, shoulder flexion

Question 2

Name the Origin, Insertion, Action, and Innervation of the: Brachialis

Answer 2

O: Anterior aspect of the distal humerus
I: Coranoid process of the ulna
N: Musculocutaneous Nerve
A: Elbow flexion

Question 3

Name the Origin, Insertion, Action, and Innervation of the: Brachialradialis

Answer 3

O: Lateral supracondylar ridge of humerus
I: Near styloid process of distal radius
N: Radial Nerve
A: Elbow flexion, pronating or supinating forearm to neutral

Question 4

Name the Origin, Insertion, Action, and Innervation of the: Triceps Brachii

Answer 4

O: Long head- Infraglenoid tubercle, Lateral head- posterior aspect of the superior humerus lateral to the radial groove, Medial head- posterior aspect of the superior humerus medial to the radial groove
I: Olecranon process of the ulna
N: Radial Nerve
A: Elbow extension, Shoulder extension (long head only)

Question 5

Name the Origin, Insertion, Action, and Innervation of the: Anconeus

Answer 5

O: Posterior aspect of the lateral epicondyle of the humerus
I: Olecranon process of the ulna
N: Radial Nerve
A: Elbow extension

Question 6

What are the primary elbow Flexors? Secondary?

Answer 6

Primary-
Biceps
Brachialis
Brachioradialis

Secondary-
Pronator teres

Question 7

What are the primary elbow Extensors?

Answer 7

Triceps

Anconeus