The adaptive significance of the crossed extensor reflex when a person steps on a tack is to
A. remove the foot from the tack.
B. increase the rate at which withdrawal of the limb occurs.
C. slow the rate of removal of the foot from the tack.
D. reduce the pain sensations.
E. prevent the person from falling down.
E
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The mechanism of stabilizing the GFR based on the tendency of smooth muscle to contract when stretched is known as what?
A. renal autoregulation B. the myogenic mechanism C. tubuloglomerular feedback D. sympathetic control E. the renin-angiotensin-aldosterone mechanism
Anatomy students are viewing bone and identifying the sella turcica, pterygoid processes, foramen ovale, foramen spinosum, and the foramen rotundum. What bone are they studying?
A. vomer. B. ethmoid bone. C. palatine bone. D. sphenoid bone. E. occipital bone.
A small molecule that can cause an allergic reaction is a/an
A. T cell. B. B cell. C. antibody. D. hapten.
The testicles belong to which two systems?
A. Endocrine and excretory B. Reproductive and excretory C. Reproductive and lymphatic D. Reproductive and endocrine