The thick segments in the nephron loop __________.
contain an aldosterone-regulated pump
are characterized by ADH-regulated permeability
contain diffusion mechanisms for getting rid of excess water
contain transport mechanisms that pump materials out of the filtrate
contain transport mechanisms that pump materials out of the filtrate
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The zygomaticus major muscle acts to
A) move the external ear. B) purse the lips. C) depress the lower lip. D) retract and elevate the corner of the mouth. E) close the eye.
The ________ surrounds a bundle of nerve fibers
A) epineurium B) endoneurium C) perineurium D) None of the answers are correct.
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