Question 1

The function of the biceps femoris is to

Accepted Answer

The answer of The function of the biceps femoris is...

Question 2

Which is one of the largest muscles in the body and the one most responsible for extending and laterally rotating the thigh?

Accepted Answer

The gluteus maximus is one of the largest muscles in the body and is primarily responsible for extending and laterally rotating the thigh.

Question 3

Which group of muscles forms a thick, fleshy mass at the base of the thumb?

Accepted Answer

The thenar group of muscles forms a thick, fleshy mass at the base of the thumb. This group includes the abductor pollicis brevis, flexor pollicis brevis, and opponens pollicis muscles.

Question 4

The extensor hallucis longus is located in the

Accepted Answer

The extensor hallucis longus is located in the anterior compartment of the leg. It is responsible for extending the great toe.

Question 5

Most muscles within the medial compartment of the thigh function to adduct the thigh.

Accepted Answer

The medial compartment of the thigh primarily contains muscles that are responsible for adducting the thigh, such as the adductor longus, adductor brevis, and adductor magnus.

Question 6

If you were to remove the gastrocnemius muscle, you would expose the

Accepted Answer

The gastrocnemius muscle is located on the posterior aspect of the leg and covers the soleus muscle. Therefore, if the gastrocnemius muscle were to be removed, the underlying soleus muscle would be exposed. The other options listed are either located on the anterior or lateral aspect of the leg and are not covered by the gastrocnemius muscle.

Question 7

These two muscles are known as the triceps surae and together are the most powerful plantar flexors of all of the leg muscles.

Accepted Answer

The triceps surae is composed of two muscles - gastrocnemius and soleus - both of which are plantar flexors. Gastrocnemius is the larger of the two and attaches above the knee joint and soleus attaches to the tibia and fibula bones of the lower leg. Together, they are the most powerful plantar flexors in the leg muscles. None of the other muscle pairs listed are plantar flexors, making B the correct choice.

Question 8

Most muscles that move the thigh attach proximally to the

Accepted Answer

Most muscles that move the thigh attach proximally to the os coxae, which is the hip bone, providing a stable base for movement.

Question 9

Which is the longest muscle of the body?

Accepted Answer

The sartorius muscle is the longest muscle in the human body, running from the hip to the knee.

Question 10

Which muscle does not attach proximally to the ischial tuberosity?

Accepted Answer

The adductor longus muscle does not attach proximally to the ischial tuberosity; it originates from the pubis.

Question 11

With three seconds left on the clock, Mia breaks free and scores the winning goal in her soccer game. Of the muscles listed, select the one with the primary action in extending the leg for kicking.

Accepted Answer

The quadriceps femoris is the primary muscle group responsible for extending the leg at the knee joint, which is the main action required for kicking.

Question 12

Crural muscles are those that move the

Accepted Answer

Crural muscles are located in the lower leg and are responsible for movements of the ankle, foot, and toes.

Question 13

If you had all of your fingers (including the thumb) spread out wide, which muscle or group would bring fingers 2-5 together?

Accepted Answer

The palmar interossei muscles are responsible for adducting the fingers (bringing them together) towards the middle finger.

Question 14

The muscles of the anterior compartment of the leg function to

Accepted Answer

The anterior compartment of the leg contains muscles like the tibialis anterior, which are primarily responsible for dorsiflexing the foot and extending the toes.

Question 15

If you had all of your fingers (including the thumb) spread out wide, which muscle or group would bring your thumb toward your first finger?

Accepted Answer

The adductor pollicis is the muscle responsible for bringing the thumb toward the first finger, a movement known as adduction.

Question 16

The muscles that form the fleshy mass at the base of the little finger are known as the ________ group.

Accepted Answer

The answer of The muscles that form the fleshy mass...

Question 17

Which muscle is the primary dorsiflexor of the foot at the ankle?

Accepted Answer

The tibialis anterior is the primary muscle responsible for dorsiflexion of the foot at the ankle joint.

Question 18

When a child raises her hand to show you she is five years old, she is using all of the following muscles except the

Accepted Answer

The flexor digitorum is not used in the action of extending the fingers to show age. It is involved in flexing the fingers, which is the opposite action of what is described. The other muscles listed are involved in extending or spreading the fingers.

Question 19

Which is not one of the hamstring muscles?

Accepted Answer

The rectus femoris is not part of the hamstring muscles. The hamstring muscles consist of the biceps femoris, semitendinosus, and semimembranosus, which are all located on the back of the thigh and are responsible for hip extension and knee flexion. The rectus femoris, on the other hand, is located at the front of the thigh and is part of the quadriceps muscle group, which is responsible for knee extension.

Question 20

Which of the following muscles attaches distally to the head of the fibula?

Accepted Answer

The biceps femoris muscle, specifically its long head, attaches distally to the head of the fibula.

Quiz 11: Muscular System: Axial and Appendicular Muscles