Question 1

Which of the following best describes the role of a muscle classified as a 'fixator' in skeletal muscle function?

Accepted Answer

It immobilizes a bone or muscle’s origin to stabilize the movement.

Question 2

A muscle named 'biceps brachii' is classified based on which naming convention?

Accepted Answer

Number of origins

Question 3

Which fascicle arrangement allows for the greatest range of motion but the least power?

Accepted Answer

Parallel

Question 4

The orbicularis oris muscle is an example of which fascicle arrangement?

Accepted Answer

Circular

Question 5

Which muscle is the prime mover of jaw closure during mastication?

Accepted Answer

Masseter

Question 6

All muscles of facial expression are innervated by which cranial nerve?

Accepted Answer

Cranial nerve VII (Facial)

Question 7

A patient presents with difficulty retracting and elevating their tongue. Which muscle is most likely impaired?

Accepted Answer

Styloglossus

Question 8

Which muscle is responsible for protracting the tongue and is innervated by the hypoglossal nerve?

Accepted Answer

Genioglossus

Question 9

During inspiration, which muscle acts as the prime mover by flattening upon contraction?

Accepted Answer

Diaphragm

Question 10

A muscle with fascicles attaching obliquely to a central tendon running the length of the muscle is classified as:

Accepted Answer

Pennate

Question 11

Which of the following muscles is a synergist in forearm flexion and is located in the forearm?

Accepted Answer

Brachioradialis

Question 12

If a muscle is named 'rectus femoris', what does 'rectus' indicate about its fiber direction?

Accepted Answer

Fibers run straight along the axis

Question 13

Which muscle is responsible for compressing the cheek and is important in suckling and holding food between teeth?

Accepted Answer

Buccinator

Question 14

A muscle named 'triceps' has how many origins?

Accepted Answer

$$3$$

Question 15

Which muscle arrangement is best suited for producing the most force?

Accepted Answer

Pennate

Question 16

Which muscle is the antagonist to the biceps brachii during elbow flexion?

Accepted Answer

Triceps brachii

Question 17

A patient is unable to elevate their hyoid bone during swallowing. Which muscle is most likely affected?

Accepted Answer

Stylohyoid

Question 18

Which muscle is responsible for the grinding movements of the jaw?

Accepted Answer

Medial and lateral pterygoids

Question 19

Which of the following is NOT a criterion used in naming skeletal muscles?

Accepted Answer

Type of muscle contraction (isometric vs isotonic)

Question 20

Which muscle is innervated by cranial nerve XII and is responsible for motor movement of the tongue?

Accepted Answer

Genioglossus

Anatomy of the Muscular System: Structure, Function, and Major Groups

Study Guide - Practice Questions