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.


C) Myogenic response is the intrinsic ability of vascular smooth muscle to respond to pressure changes.

Anatomy & Physiology

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Normal blood pH is maintained within a range of

A. 1.0 - 14.0. B. 4.5 - 5.5. C. 7.35 - 8.5. D. 6.5 - 9.5. E. 7.35 - 7.45.

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What is perforin?

A) a type of antibody synthesized by B cells B) a protein produced by NK cells C) a type of interferon D) a toxin expressed by some pathogens that is capable of damaging healthy cells E) a destructive enzyme secreted by sebaceous glands

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Proteins are complex molecules composed of

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