Match the term with the best description.A. Simple squamous epithelium of capillariesB. Drain capillary networksC. Regulate blood flow into capillariesD. Do not have fenestraeE. Bypass capillary bedsEndothelium
Fill in the blank(s) with the appropriate word(s).
Answer: A
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Central chemoreceptors detect a decrease in pH in interstitial fluids in the brain. What is the response of the medulla to maintain delivery of oxygen to cells?
A) A feedback loop is initiated that indirectly increases parasympathetic activity which results in vasodilation and a decrease in blood pressure. B) A feedback loop is initiated that indirectly decreases sympathetic activity which results in vasodilation and a decrease in blood pressure. C) A feedback loop is initiated that indirectly increases parasympathetic activity which results in vasoconstriction and a rise in blood pressure. D) A feedback loop is initiated that indirectly increases sympathetic activity which results in vasoconstriction and a rise in blood pressure.
Where is the esophageal plexus in the diagram?
a) A b) B c) D d) C e) G
Because of anatomical differences in the olfactory system, the sense of smell may be more important to this animal than it is to humans
A) sheep B) fish C) predatory bird
Which one of the following is NOT true of the constant (C) regions of antibodies?
A) The constant regions are the same or nearly the same on all antibodies of a given class. B) The constant regions form the "stem" of an antibody. C) The constant regions determine the specific type of antibody class formed. D) The constant regions form an antigen-binding site. E) The constant regions determine how an antibody class will carry out its immune role.