Biomechanics Quiz #9

Which of the following muscles has its insertion on the base of the distal phalanx of each of the four lesser toes? A.gastrocnemius B. soleus C.tibialis anterior D. flexor digitorum longus

D.flexor digitorum longus

The medial malleolus is an anatomical landmark located on the fibula.

False

Dorsiflexion is the anterior ankle and foot moving toward the anterior tibia.

True

Pronation is a combination of ankle dorsiflexion, subtalar eversion, and forefoot abduction.

True

Which of the following is not considered to be a muscular compartment of the lower leg? A.Medial compartment B.Anterior compartment C.Lateral compartment D.Superficial compartment

A. Medial compartment

Which of the following muscles can perform knee flexion when concentrically contracting? A.gastronemius B. soleus C.tibialis anterior D.flexor digitorum longus

A.gastronemius

Which of the following muscles may be palpated on the upper one-half of the posterior aspect of the lower leg? A.gastronemius B.soleus C.tibialis anterior D. flexor digitorum longus

A.gastronemius

Which of the following muscles is included in the anterior compartment? A. Popliteus B. Peroneus tertius C. Flexor hallucis longus D. Plantaris

B. Peroneus tertius

Which of the following muscles only performs plantar flexion? A.gastrocnemius B.soleus C.tibialis anterior D.flexor digitorum longus

B.soleus

Which of the following is the correct order starting from the most posterior aspect of the lower leg and moving medially? A.tibialis posterior, flexor digitorum longus, flexor hallucis longus B.flexor digitorum longus, flexor hallucis longus, tibialis posterior C.flexor hallucis longus, flexor digitorum longus, tibialis posterior D.tibialis posterior, flexor hallucis longus, flexor digitorum longus

C.flexor hallucis longus, flexor digitorum longus, tibialis posterior

Ankle sprain is a common injury that involves the stretching or tearing of one or more tendons.

False

Inversion is turning the ankle and foot outward away from the midline of the body where the weight is on medial edge of foot.

False

Severe injuries at the tibiofibular joint can involve the posterior tibiofibular ligament, interosseus ligament, and interosseus membrane.

True

The distal malleoli of the tibia and fibula serve as pulleys for the posterior tendons to increase the mechanical advantage of the respective muscles in performing inversion and eversion actions.

True

The most common type of ankle sprain results from excessive inversion that causes damage to lateral structures.

True

The soleus can perform muscular actions only in the sagittal plane.

True

Tibialis anterior performs dorsal flexion of the ankle in the sagittal plane.

True

Toe flexion is movement of toes toward plantar surface of the foot

True