Muscles of the Upper Arm

Question 1

What are the muscles of the upper arm

Answer 1

Biceps brachii
Brachialis
Coracobrachialis
Triceps brachii

Question 2

Which muscles are in the anterior compartment of the upper arm

Answer 2

Biceps brachii
Brachialis
Coracobrachialis

Question 3

Which muscles are in the posterior compartment of the upper arm

Answer 3

Triceps brachii

Question 4

Which nerve innervates the muscles of the anterior compartment of the upper arm

Answer 4

Musculocutaneous nerve

Question 5

Which artery supplies the muscles of the anterior compartment of the upper arm

Answer 5

Muscular branches of the brachial artery

Question 6

What is the bicipital aponeurosis

Answer 6

Connective tissue sheet given off as the tendon of biceps brachii enters the forearm
Forms the roof of the cubital fossa
Blends with the deep fascia of the anterior forearm

Question 7

Where does the long head of biceps brachii originate

Answer 7

Supraglenoid tubercle of the scapula

Question 8

Where does the short head of biceps brachii originate

Answer 8

Corcaoid process of the scapula

Question 9

Where does biceps brachii insert

Answer 9

Radial tuberosity

Fascia of the forearm via the bicipital aponeurosis

Question 10

What is the function of biceps brachii

Answer 10

Supination of the forearm

Flexion at the elbow and the shoulder

Question 11

Which never innervates biceps brachii

Answer 11

Musculocutaneous nerve

Question 12

What does bicep tendon reflex test

Answer 12

Spinal cord segment C6

Question 13

Where does the coracobrachialis muscle lie in relation to biceps brachii

Answer 13

Deep to it

Question 14

Where does corachobrachialis originate

Answer 14

Coracoid process of the scapula

Question 15

Where does corachobrachialis insert

Answer 15

Medial side of the humeral shaft at the level of the deltoid tubercle

Question 16

What is the action of coracobrachialis

Answer 16

Flexion at the shoulder

Weak adduction

Question 17

Which nerve innervates coracobrachialis

Answer 17

Musculocutaneous nerve

Question 18

Where does brachialis lie

Answer 18

Deep to biceps brachii

Question 19

What forms the floor of the cubital fossa

Answer 19

Brachialis

Question 20

Where does brachialis originate

Answer 20

Medial and lateral surfaces of the humeral shaft

Question 21

Where does brachialis insert

Answer 21

Ulna tuberosity

Question 22

What is the function of brachialis

Answer 22

Flexion at the elbow

Question 23

Which nerve innervates brachialis

Answer 23

Musculocutaneous nerve

Contributions from radial nerve

Question 24

Which is the most common tendon to rupture in the arm

Answer 24

Long head of biceps

Question 25

What sign does rupture of long head of biceps cause

Answer 25

Popeye sign

Question 26

Which muscle is in the posterior compartment of the upper arm

Answer 26

Triceps brachii

Question 27

How many heads does triceps brachii have

Answer 27

3

Question 28

Which head of triceps lies the deepest

Answer 28

Medial head

Question 29

Which artery supplies the posterior compartment of the arm

Answer 29

Profunda brachii artery

Question 30

Where does long head of triceps originate

Answer 30

Infraglenoid tubercle

Question 31

Where does lateral head of triceps originate

Answer 31

Humerus, superior to the radial groove

Question 32

Where does the medial head of triceps originate

Answer 32

Humerus, inferior to the radial groove

Question 33

Where does triceps brachii insert

Answer 33

Olecranon of the ulna

Question 34

What is the function of triceps brachii

Answer 34

Extension at the elbow

Question 35

Which nerve innervates triceps brachii

Answer 35

Radial nerve

Question 36

What does triceps reflex test

Answer 36

Spinal segment C7

Question 37

What is long head of triceps innervated by in some people

Answer 37

Axillary nerve