Muscles of the upper arm

Question 1

Function of deltoid

Answer 1

flexion, abduction and rotation of shoulder

Question 2

Origin and insertion of deltoid and Innervation

Answer 2

O= spine of the scapula
I= deltoid tuberosity
Innervation

Question 3

Function of Biceps brachii

Answer 3

elbow flexion, flexion and abduction of shoulder

Question 4

Origin and insertion and innervation of Biceps Brachii

Answer 4

O= short head = coracoid process; long head = supraglenoid tubercle
I= radial tuberosity
Innervation= musculocutaneous nerve

Question 5

Function of the Triceps brachii

Answer 5

Forearm extension

Question 6

Origion and Insertion of Triceps Brachii

Answer 6

Origin  long head = infraglenoid tubercle; lateral head = above radial groove; medial head = below radial groove

Insertion  olecranon process

Question 7

Innervation of triceps brachii

Answer 7

radial and axillary nerve