When vasodilation doubles the vessel diameter, what is the change in resistance?
A.
Reduced by half
B.
Doubles (twice the original value)
C.
Reduced by 1/4th of the original value
D.
Reduced to 1/16th of the original value
D
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Which of the following statements is inaccurate with respect to the sensory system of katydids?
A) Katydids' ears are located in the bend on their front legs. B) Katydids have excellent hearing. C) Katydids' hearing is used to identify mating calls of members of their own species. D) Katydids cannot detect any echolocation sounds made by different species, such as bats.
An increase in alveolar O2 concentration caused by a mismatched large airflow and small blood flow brings about pulmonary vasodilation
a. True b. False Indicate whether the statement is true or false
According to the ____________________ theory, when an antigen enters the body, it activates the particular clone of B cells that bear receptors on their surface uniquely specific for that antigen
Fill in the blank(s) with correct word
Saltatory conduction of an action potential means that
A. once one action potential is created, it moves down the axon. B. the whole axon depolarizes at the same time. C. one action potential stimulates the production of a new action potential at the adjacent site. D. an action potential is conducted from one node of Ranvier to the next node.