Hormonal and neural changes during pregnancy function to facilitate diffusion of gases across the placenta. One way this occurs is by ________ respiration rate, thereby ________ CO2 levels in the blood.

A. increasing; lowering
B. increasing; raising
C. decreasing; lowering
D. decreasing; raising


Answer: A

Anatomy & Physiology

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Platelets are formed elements

Indicate whether this statement is true or false.

Anatomy & Physiology

In the stomach:

a. pepsin converts hydrochloric acid to pepsinogen b. pepsin converts pepsinogen to hydrochloric acid c. hydrochloric acid converts pepsinogen to pepsin d. hydrochloric acid converts pepsin to pepsinogen

Anatomy & Physiology

Night blindness is a result of a deficiency of what nutrient?

a. glutamate b. vitamin E c. vitamin B6 d. vitamin A e. zinc

Anatomy & Physiology

Small signals at a synapse that can add together are called

A. graded potentials. B. kinetic potentials. C. action potentials. D. receptor potentials. E. resting potentials.

Anatomy & Physiology