Question 1

Which of the following best describes how the deltoid muscle was named?

Accepted Answer

By its distinctive triangular shape

Question 2

A muscle named 'biceps brachii' indicates which of the following characteristics?

Accepted Answer

It has two origins

Question 3

Which muscle is primarily responsible for closing the jaw during chewing?

Accepted Answer

Masseter

Question 4

If a muscle is named 'rectus femoris,' what does the term 'rectus' indicate about the muscle fibers?

Accepted Answer

They run straight along the axis

Question 5

A patient is having difficulty with inspiration (breathing in). Which muscle is most likely impaired?

Accepted Answer

External intercostals

Question 6

Which of the following muscles is located over the temporal bone and is involved in mastication?

Accepted Answer

Temporalis

Question 7

The triceps brachii muscle is named for which of the following reasons?

Accepted Answer

It has three origins

Question 8

Which muscle is responsible for flexing the forearm at the elbow joint?

Accepted Answer

Biceps brachii

Question 9

A muscle named 'gluteus maximus' is named based on which characteristic?

Accepted Answer

Its location and its large size

Question 10

Which of the following muscles is most involved in smiling?

Accepted Answer

Zygomaticus major

Question 11

A muscle with fibers running at right angles to the midline is likely to have which of the following in its name?

Accepted Answer

Transversus

Question 12

Which muscle is primarily responsible for abduction of the arm at the shoulder?

Accepted Answer

Deltoid

Question 13

A patient presents with difficulty elevating their shoulders. Which muscle is most likely affected?

Accepted Answer

Trapezius

Question 14

Which muscle is responsible for compressing the abdominal contents and is important in forced expiration?

Accepted Answer

Transversus abdominis

Question 15

If a muscle is named 'oblique,' what does this indicate about the direction of its fibers?

Accepted Answer

They run at an angle to the axis

Question 16

Which muscle is most responsible for plantar flexion at the ankle joint?

Accepted Answer

Gastrocnemius

Question 17

A muscle named 'adductor longus' is likely to:

Accepted Answer

Adduct the thigh and be relatively long

Question 18

Which of the following muscles is located in the anterior compartment of the thigh and is responsible for extending the knee?

Accepted Answer

Rectus femoris

Question 19

A patient is unable to flex their wrist. Which muscle is most likely impaired?

Accepted Answer

Flexor carpi radialis

Question 20

Which muscle is responsible for turning the head to the opposite side and flexing the neck?

Accepted Answer

Sternocleidomastoid

Gross Anatomy of the Muscular System: Structure, Naming, and Major Muscle Groups

Study Guide - Practice Questions