Question 1

Which muscle is located in the anterior compartment of the leg and is primarily responsible for dorsiflexion of the foot at the ankle joint?

Accepted Answer

Tibialis anterior

Question 2

A patient presents with foot drop, characterized by an inability to dorsiflex the foot. Which muscle is most likely affected?

Accepted Answer

Tibialis anterior

Question 3

Which of the following muscles does NOT cross the ankle joint?

Accepted Answer

Popliteus

Question 4

The tendons of which group of muscles pass posterior to the medial malleolus and are held in place by the flexor retinaculum?

Accepted Answer

Deep posterior compartment muscles

Question 5

Which muscle originates from the head and proximal shaft of the fibula and inserts on the base of the first metatarsal, crossing the plantar aspect of the foot?

Accepted Answer

Fibularis longus

Question 6

A runner complains of pain along the medial side of the foot and difficulty inverting the foot. Which muscle is most likely injured?

Accepted Answer

Tibialis posterior

Question 7

Which of the following best describes the common action of the muscles in the lateral compartment of the leg?

Accepted Answer

Plantarflexion and eversion of the foot

Question 8

The gastrocnemius and soleus muscles share a common insertion via the calcaneal tendon. What is their primary action at the ankle joint?

Accepted Answer

Plantarflexion

Question 9

Which of the following statements about the intrinsic muscles of the foot is CORRECT?

Accepted Answer

They assist in maintaining the arches of the foot

Question 10

A patient has difficulty extending the great toe. Which muscle is most likely affected?

Accepted Answer

Extensor hallucis longus

Question 11

Which of the following is the correct order (from medial to lateral) of the tendons passing posterior to the medial malleolus?

Accepted Answer

Tibialis posterior, flexor digitorum longus, flexor hallucis longus

Question 12

Which muscle is found in the deep posterior compartment of the leg and is responsible for unlocking the knee by laterally rotating the femur on the tibia?

Accepted Answer

Popliteus

Question 13

A soccer player sustains an injury to the superficial posterior compartment of the leg. Which of the following muscles is LEAST likely to be affected?

Accepted Answer

Flexor digitorum longus

Question 14

Which of the following best describes the function of the interosseous membrane between the tibia and fibula?

Accepted Answer

It provides a surface for muscle attachment and stabilizes the bones

Question 15

Which muscle is responsible for plantarflexion of the foot and flexion of the knee, and has two heads originating from the femoral condyles?

Accepted Answer

Gastrocnemius

Question 16

A patient is unable to evert their foot. Which compartment of the leg is most likely affected?

Accepted Answer

Lateral compartment

Question 17

Which of the following muscles is found in the anterior compartment and inserts on the dorsum of the fifth metatarsal?

Accepted Answer

Fibularis tertius

Question 18

Which of the following is a unique feature of the intrinsic muscles of the foot compared to the hand?

Accepted Answer

The foot has dorsal intrinsic muscles

Question 19

A patient presents with weakness in toe flexion and numbness along the sole of the foot. Which structure is most likely compressed at the medial ankle?

Accepted Answer

Flexor retinaculum

Question 20

Which of the following equations best represents the relationship between muscle force ($$F$$), lever arm length ($$r$$), and torque ($$	au) at $$the ankle joint?

Accepted Answer

$$ 	au = F 	imes r $$

Myology of the Leg & Foot: Anatomy & Physiology Study Notes

Guida di studio - Domande di pratica

Study guide - Flashcard