Which muscle is the primary dorsiflexor of the foot at the ankle?
A. Fibularis brevis
B. Extensor digitorum longus
C. Gracilis
D. Extensor hallucis longus
E. Tibialis anterior
Answer: E
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Which of the following statements about autoregulation is NOT true?
A) In tubuloglomerular feedback, stretch-sensitive ion channels open, resulting in depolarization of smooth muscle cells. B) In myogenic response, the macula densa cells send a paracrine message to the neighboring afferent arteriole. C) Myogenic response is the intrinsic ability of vascular smooth muscle to respond to pressure changes. D) Myogenic response is a paracrine signaling mechanism.
Knee extensors, known as the quadriceps femoris, include the
A) biceps femoris, gracilis, and sartorius. B) three vastus muscles and the rectus femoris. C) popliteus, iliopsoas, and gracilis. D) gastrocnemius, tibialis, and fibularis. E) hamstrings and adductors.
As they extend from the retina to the brain, the nerve fibers
A) from the nasal half of each retina cross over. B) all cross over. C) do not cross over. D) from the temporal half of each retina cross over.
Which muscles help us in the initial breakdown of food?
A. Muscles of mastication B. Muscles that move the tongue C. Extrinsic eye muscles D. Muscles of the pharynx E. Muscles of facial expression