ArmMuscleFunctionandInnervation-210804-160837

Question 1

What are the two compartments of arm muscles?

Answer 1

Anterior - flexor muscles, Posterior - extensor muscles

Question 2

What nerves innervate the anterior compartment of arm muscles?

Answer 2

Musculocutaneous and radial nerves

Question 3

What is the primary muscle in the posterior compartment of the arm?

Answer 3

Triceps brachii

Question 4

Which nerve innervates the triceps brachii muscle?

Answer 4

Radial nerve

Question 5

What is the function of the coracobrachialis muscle?

Answer 5

Flexion of the arm

Question 6

What are the two heads of the biceps brachii muscle?

Answer 6

Short head and long head

Question 7

Where does the tendon of the long head of the biceps brachii pass through?

Answer 7

Glenohumeral joint, intertubercular sulcus

Question 8

What is the function of the biceps brachii muscle?

Answer 8

Flexion and supination

Question 9

What is the primary function of the brachialis muscle?

Answer 9

Forearm flexion at the elbow joint

Question 10

How many heads does the triceps brachii muscle have?

Answer 10

Three heads

Question 11

What are the names of the heads of the triceps brachii?

Answer 11

Long head, medial head, lateral head

Question 12

What is the goal of understanding arm muscle function and innervation?

Answer 12

To identify boundaries, function, and innervation of arm muscles

Question 13

Fill in the blank: The anterior arm muscles are primarily responsible for _______.

Answer 13

Flexion

Question 14

Fill in the blank: The posterior arm muscles are primarily responsible for _______.

Answer 14

Extension

Question 15

True or False: The musculocutaneous nerve innervates the triceps brachii muscle.

Answer 15

False