Question 1

Which statement best describes the difference between the origin and insertion of a muscle?

Accepted Answer

The origin is the attachment to the stationary bone, while the insertion is attached to the bone that moves during contraction.

Question 2

During flexion of the elbow, which muscle acts as the prime mover (agonist)?

Accepted Answer

Biceps brachii

Question 3

If a person is performing extension of the elbow, which muscle is acting as the antagonist?

Accepted Answer

Biceps brachii

Question 4

Which muscle acts as a synergist during elbow flexion?

Accepted Answer

Brachioradialis

Question 5

A patient is unable to extend their thigh at the hip joint. Which muscle is most likely impaired?

Accepted Answer

Gluteus maximus

Question 6

Which muscle is primarily responsible for the action of kissing?

Accepted Answer

Orbicularis oris

Question 7

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

Accepted Answer

Biceps femoris

Question 8

Which muscle allows you to cross your legs, earning it the nickname 'tailor's muscle'?

Accepted Answer

Sartorius

Question 9

During flexion of the elbow, what is the role of the triceps brachii?

Accepted Answer

Antagonist

Question 10

Which muscle is located on the posterior side of the lower leg and is involved in plantar flexion?

Accepted Answer

Gastrocnemius

Question 11

If the biceps brachii contracts and pulls the forearm towards the shoulder, which bone serves as the origin?

Accepted Answer

Scapula

Question 12

Which muscle is a major contributor to the extension of the leg at the knee joint?

Accepted Answer

Rectus femoris

Question 13

A muscle that assists the prime mover in performing its action is called a:

Accepted Answer

Synergist

Question 14

Which muscle is found in the buttocks and is important for hip extension and climbing stairs?

Accepted Answer

Gluteus maximus

Question 15

Which of the following is a function of the orbicularis oculi muscle?

Accepted Answer

Closing the eyelids

Question 16

If a muscle's insertion is pulled towards its origin during contraction, which equation best represents the force generated ($F$) if the muscle contracts with a tension ($T$) over a lever arm distance ($d$)?

Accepted Answer

$F = T 	imes d$

Question 17

Which muscle is located on the anterior thigh and is part of the quadriceps group?

Accepted Answer

Rectus femoris

Question 18

Which muscle is responsible for flexion of the thigh at the hip joint?

Accepted Answer

Rectus femoris

Question 19

During extension of the elbow, which muscle acts as the prime mover?

Accepted Answer

Triceps brachii

Question 20

Which muscle is found deep to the rectus abdominis and helps compress the abdominal contents?

Accepted Answer

Transversus abdominis

Muscle Structure and Function: Origins, Insertions, and Major Muscle Groups

Study Guide - Practice Questions

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