Vasoconstriction is a term that refers to the contraction of muscle in the walls of the blood vessels, thus causing the diameter of the blood vessel to decrease. Which one of the following types of muscle would be involved in this contraction?
A) skeletal
B) smooth
C) cardiac
D) both cardiac and smooth
E) both skeletal and smooth
B
You might also like to view...
When cells associate with each other they form
A. atoms. B. molecules. C. macromolecules. D. tissues. E. populations.
Pressure flow involves
a. sugar transported in phloem. b. sugar transported in xylem. c. water transported in phloem. d. water transported in xylem
Complex quantitative traits often show
A) only one discrete phenotype. B) a distribution with a large proportion of individuals at the two extremes. C) a normal distribution with an equal number of points above and below the mean. D) a normal distribution with an equal number of points at each value within the range.
Gene frequencies will NOT change in a population if certain conditions are met, such as if
A. all organisms mate randomly. B. there is no migration. C. there is no mutation. D. All of these answers are true.