elbow

Question 1

biceps brachii

1) origin
2) insertion
3) action

Answer 1

1) LH - supraglenoid tubercle
SH - coracoid process

2) radial tuberosity & bicipital aponeurosis
3) elbow and shoulder flexion & supination

Question 2

triceps brachii

1) origin
2) insertion
3) action

Answer 2

1) LH - infraglenoid tubercle
lateral head - posterior upper 3rd of humerous
medial head - posterior lower 3rd of humerous

2) olecranon process
3) extension of elbow

Question 3

brachialis

1) origin
2) insertion
3) action

Answer 3

1) lower half of anterior side of humorous
2) brachialis impression
3) flexes elbow

Question 4

brachioradialis

1) origin
2) insertion
3) action

Answer 4

1) lateral supracondylar ridge of humorous
2) radial styloid process
3) flexes elbow/ will return forearm to mid position from extreme supination or pronation

Question 5

pronator teres

1) origin
2) insertion
3) action

Answer 5

1) medial epicondyle of humerous and medial border of ulna
2) middle of lateral surface of radius
3) pronation

Question 6

supinator

1) origin
2) insertion
3) action

Answer 6

1) - lateral epicondyle of humorous
- annular ligament
- supinator fossa of ulna

2) anterolateral border of upper 1/3 radius
3) supination

Question 7

anconeus

1) origin
2) insertion
3) action

Answer 7

1) posterior surface of epicondyle
2) lateral surface of olecranon and lateral surface of ulna
3) minor extension

Question 8

pronator quadratus

1) origin
2) insertion
3) action

Answer 8

1) medial borders of distal 1/4 of ulna
2) anterior surface of distal 1/4 of radius
3) pronation