muscles of the arm

Question 1

biceps brachii

Answer 1

o:
long head- supraglenoid tubercle
short head- coracoid process

i: radial tuberosity

function

• elbow flexion
• supination of forearm

Question 2

brachialis

Answer 2

o: lower anterior surface of humerus
i: corned process of ulna
f: flexion of elbow

Question 3

triceps brachii

Answer 3

o:
long head: infraglenoid tubercle
lateral head: posterior aspect of humerus
medial: posterior aspect of humerus

i: olecranon process
f: extension of elbow

Question 4

brachio-radialis

Answer 4

o: above lateral epicondyle of humerus
i: styloid process of radius
f: flexion of forearm (when arm is self pronated)

Question 5

anconeus

Answer 5

o: lateral epicondyle of humerus
i: olecranon & posterior surface of ulna
f: extends elbow

Question 6

pronator quadratus

Answer 6

o: anterior distal surface of ulna
i: anterior distal surface of radius
f: pronates forearm

Question 7

pronator teres

Answer 7

o: medial epicondyle of humerus & coronoid process of ulna
i: midshaft of radius
f: pronates forearm, flexes elbow

Question 8

supinator

Answer 8

o: lateral epicondyle of humerus
i: anterior aspect of radius
f: supinates forearm