The major means of decreasing heat loss in response to a cold environmental temperature is
a. skin vasoconstriction.
b. skin vasodilation.
c. increasing the temperature gradient between the skin and environment.
d. formation of "goose bumps."
e. shivering.
A
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The cerebral lobe posterior to the central sulcus is the
A) parietal lobe. B) temporal lobe. C) frontal lobe. D) occipital lobe. E) insula.
What is the term used to describe the age of an embryo or fetus calculated from the presumed first day of the last normal menstrual period?
a) Conceptus b) Primordium c) Epigenesis d) Gestational age e) Fertilization age
The internal structure that permits stiffening of the penis consists of three columns of ________.
Fill in the blank(s) with the appropriate word(s).
Blood type is an example of a trait that demonstrates
A. polygenic dominance. B. sex-linked recessiveness. C. incomplete dominance. D. strict Mendelian inheritance. E. codominant inheritance.