What is an increase in alveolar ventilation to match the demands of increased metabolic activity in the cells called?
A) hypoventilation
B) hyperventilation
C) hyperpnea
D) dyspnea
E) hypopnea
Answer: C) hyperpnea
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Smooth muscle is
a. involuntary and nonstriated. b. responsible for movement of the skeleton. c. involved in contraction of the heart. d. connected to bones by tendons. e. involuntary, nonstriated, and involved in contraction of the heart.
The energy of wavelengths that appear ________ is LEAST useful to photosynthesis
A) red B) green C) blue D) orange
The overall effect of renin release will be to
A. inhibit aldosterone secretion. B. lower blood volume. C. decrease hydrogen ion excretion and decrease sodium and bicarbonate ion absorption. D. increase blood volume and pressure. E. lower blood pressure.
There are no microorganisms that can cross the transplacental barrier, so fetuses are protected until birth.
a. true b. false