Muscles of Arm

Question 1

BICEPS BRACHII (Origin)

Answer 1

LONG head - supraglenoid tubercle of scapula
SHORT head - apex of coracoid process

Question 2

BICEPS BRACHII (Insertion)

Answer 2

Radial tuberosity

Question 3

BICEPS BRACHII (Action)

Answer 3

Flexion at elbow joint
Supination in forearm
Flexion at shoulder
Adduction

Question 4

BICEPS BRACHII (Innervation)

Answer 4

Musculocutaneous Nerve

Question 5

CORACOBRACHIALIS (Origin)

Answer 5

Apex of coracoid process

Question 6

CORACOBRACHIALIS (Insertion)

Answer 6

Medial surface of humerus (along midshaft)

Question 7

CORACOBRACHIALIS (Action)

Answer 7

Weak flexor at shoulder joint

Question 8

CORACOBRACHIALIS (Innervation)

Answer 8

Musculoskeletal Nerve

Question 9

BRACHIALIS (Origin)

Answer 9

Distal half of Anterior surface of humeral shaft

Question 10

BRACHIALIS (Insertion)

Answer 10

Ulnar tuberosity

Question 11

BRACHIALIS (Action)

Answer 11

Powerful flexion of elbow joint
(PRIMARY flexor of elbow joint)

Question 12

BRACHIALIS (Innervation)

Answer 12

Musculocutaneous Nerve
Radial Nerve laterally

Question 13

TRICEPS BRACHII (Origin)

Answer 13

LONG head - infraglenoid tubercle of scapula
LATERAL head - posterior surface of humeral shaft
MEDIAL head - posterior surface of humeral shaft

Question 14

TRICEPS BRACHII (Insertion)

Answer 14

Margin of olecranon via broad tendon

Question 15

TRICEPS BRACHII (Action)

Answer 15

LONG head:
- Extention at elbow and shoulder joints
- Adduction at shoulder joint
LATERAL and MEDIAL head:
- Extension at elbow joint

Question 16

TRICEPS BRACHII (Innervation)

Answer 16

Radial Nerve