Each of the following changes will result in increased blood flow to a tissue except one. Identify the exception.
A) increased blood volume
B) decreased vessel diameter
C) increased blood pressure
D) relaxation of precapillary sphincters
E) decreased peripheral resistance
B) decreased vessel diameter
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Explain how an angiotensin converting enzyme inhibitor (ACE inhibitor) such as captopril would be effective as an antihypertensive.
What will be an ideal response?
Sweating is initiated in response to a rise in body temperature that occurs on exposure to a hot environment. Evaporation of the sweat cools the body. This is an example of
a. negative feedback. b. positive feedback. c. a feedforward mechanism. d. an intrinsic (local) control mechanism. e. autoregulation.
In comparison to the distal tubule, the proximal tubule has a
A) leakier epithelium and a larger apical surface area. B) tighter epithelium and a larger apical surface area. C) leakier epithelium and is more responsive to hormones. D) tighter epithelium and is more responsive to hormones. E) small apical surface area and is more responsive to hormones.
The HIV virus infects ________.
A. helper T cells B. suppressor T cells C. cytotoxic T cells D. monocytes E. B cells