As blood travels from arteries to veins,
A) pressure builds.
B) pressure drops.
C) flow becomes turbulent.
D) viscosity increases.
E) diameter of the blood vessels gets progressively smaller.
Answer: B
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Memory cells are
a. hippocampal neurons. b. exocrine cells that produce milk. c. dormant, non-secreting B-cells. d. dormant, non-secreting T-cells. e. antibody secreting B-cells.
The rectus femoris is an example of what muscle shape?
A. Parallel B. Elongated C. Bipennate D. Fusiform E. Triangular
Enzyme regulation by negative feedback involves
A. allosteric facilitation of an enzyme by a substrate of its metabolic pathway. B. occupation of the active site of an enzyme so that it catalyzes less efficiently. C. allosteric inhibition of an enzyme by a product of its metabolic pathway. D. allosteric modification of a substrate by an enzyme of an alternate metabolic pathway. E. enhancement of the active site by a negatively charged substrate.
In a female, the labia minora are two outer, hair-covered folds of skin that enclose the delicate, hair-free folds called the labia majora
Indicate whether the statement is true or false