Question 1

Which of the following statements best describes the relationship between the origin and insertion of a skeletal muscle during contraction?

Accepted Answer

The insertion moves toward the origin.

Question 2

A patient is unable to flex their elbow after an injury. Which muscle is most likely impaired?

Accepted Answer

Biceps brachii

Question 3

Which movement decreases the angle between two bones at a joint, such as bending the knee?

Accepted Answer

Flexion

Question 4

What is the primary action of the deltoid muscle?

Accepted Answer

Abducts the arm

Question 5

Which of the following is NOT one of the Five Golden Rules of Skeletal Muscle Activity?

Accepted Answer

Skeletal muscles always cross two joints.

Question 6

A muscle that crosses on the lateral side of a joint typically produces which movement?

Accepted Answer

Abduction

Question 7

Which term describes the movement of turning the sole of the foot medially?

Accepted Answer

Inversion

Question 8

If a muscle is named 'flexor carpi radialis,' what can you infer about its action and location?

Accepted Answer

It flexes the wrist and is located on the radius.

Question 9

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

Accepted Answer

Triceps brachii

Question 10

A patient presents with difficulty raising their eyebrows and wrinkling their forehead. Which muscle is most likely affected?

Accepted Answer

Frontalis

Question 11

Which movement is a combination of flexion, extension, abduction, and adduction, resulting in a circular motion?

Accepted Answer

Circumduction

Question 12

Which muscle group is primarily responsible for plantar flexion of the foot?

Accepted Answer

Gastrocnemius and soleus

Question 13

Which of the following best describes the action of the sternocleidomastoid muscle?

Accepted Answer

Flexes neck and rotates head

Question 14

A muscle that assists the prime mover by reducing undesirable movements is called a:

Accepted Answer

Synergist

Question 15

Which of the following muscle fascicle arrangements is best suited for generating the greatest force?

Accepted Answer

Multipennate

Question 16

Which movement is demonstrated when you shake your head 'no'?

Accepted Answer

Rotation

Question 17

Which muscle is a prime mover for arm abduction and is a common site for intramuscular injections?

Accepted Answer

Deltoid

Question 18

Which of the following best describes the developmental aspect of muscle control in infants?

Accepted Answer

Muscle control is achieved in a superior to inferior and proximal to distal direction.

Question 19

Which of the following is a real-life example of muscle atrophy?

Accepted Answer

A patient's leg muscles shrinking after being in a cast for several weeks.

Question 20

Which muscle is named for its triangular shape?

Accepted Answer

Deltoid

Skeletal Muscle Movements, Roles, and Anatomy

Study Guide - Practice Questions