When blood pressure rises rapidly the body responds by ____

a. increasing heart rate


b. increasing muscle contractions around veins
c. decreasing the diameter of arterioles
d. vasodilation of arterioles
e. increasing the movement of fluid into capillaries


ANSWER: d

Biology & Microbiology

You might also like to view...

The structural genes of the lactose operon are: (Select all correct choices)

A. always expressed unless the operon is turned off by a repressor. B. turned on in the presence of lactose. C. turned off by the presence of lactose.

Biology & Microbiology

In sewage treatment, the removal of phosphates and nitrogen compounds is achieved during

A. primary treatment. B. secondary treatment. C. advanced treatment. D. quaternary treatment.

Biology & Microbiology

what is the pathophysiology of diphtheria toxin?

What will be an ideal response?

Biology & Microbiology

Thanks to a novel recessive mutation, a certain plant species has begun to invade colder Arctic regions outside of its normal range. However, this cold-tolerant mutation has not yet become fixed in the population. A second mutation arises that promotes self-pollination. Do you predict that the self-pollination allele will be selected for in the Arctic regions? Why or why not?

A. No. Plants that produce flowers must be cross-pollinated for proper seed development. B. Yes. The self-pollinated plant is more likely to maintain the cold-tolerant mutation, and plants in the Arctic are unlikely to be visited by pollinators. C. No. Outcrossing is always beneficial, since it enhances genetic diversity. D. Cannot make a prediction from the information given. It depends on whether the plant is normally insect-pollinated or wind-pollinated.

Biology & Microbiology