Question 1

Which connective tissue layer directly surrounds each individual muscle fiber in skeletal muscle?

Accepted Answer

Endomysium

Question 2

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

Accepted Answer

Trapezius

Question 3

Which muscle is the prime mover (agonist) for flexion of the forearm at the elbow joint?

Accepted Answer

Biceps brachii

Question 4

The diaphragm is essential for breathing. What happens to the diaphragm during inspiration?

Accepted Answer

It contracts and moves downward

Question 5

Which muscle group is responsible for adducting the thigh at the hip joint?

Accepted Answer

Adductors (e.g., adductor longus)

Question 6

A muscle that assists the prime mover by adding extra force or reducing undesirable movements is called a:

Accepted Answer

Synergist

Question 7

Which of the following best describes a pennate muscle arrangement?

Accepted Answer

Short fascicles attach obliquely to a central tendon

Question 8

Which muscle is primarily responsible for plantar flexion of the foot at the ankle joint?

Accepted Answer

Gastrocnemius

Question 9

The external intercostal muscles are primarily involved in which phase of respiration?

Accepted Answer

Inspiration

Question 10

Which muscle is responsible for closing the eyelids?

Accepted Answer

Orbicularis oculi

Question 11

A muscle named 'flexor carpi radialis longus' tells you all of the following EXCEPT:

Accepted Answer

It is the shortest muscle in the group

Question 12

Which of the following muscles is NOT part of the quadriceps femoris group?

Accepted Answer

Biceps femoris

Question 13

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

Accepted Answer

Triceps brachii

Question 14

Which muscle forms the bulk of the calf and inserts into the calcaneal (Achilles) tendon?

Accepted Answer

Gastrocnemius

Question 15

Which of the following is a function of the pelvic floor muscles?

Accepted Answer

Support of pelvic organs

Question 16

Which muscle is primarily responsible for protruding the tongue?

Accepted Answer

Genioglossus

Question 17

A muscle with fibers running at an angle to the imaginary axis of the body is likely to have which term in its name?

Accepted Answer

Oblique

Question 18

Which of the following best describes the origin of a muscle?

Accepted Answer

The point of attachment that does not move when the muscle contracts

Question 19

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

Accepted Answer

Deltoid

Question 20

Which of the following is a characteristic of skeletal muscle tissue?

Accepted Answer

It is voluntary and striated

Study Guide: Skeletal Muscles and Their Organization

Study Guide - Practice Questions