A drug company produces a drug that prevents atresia. Which of the following might be a side-effect of this drug?A) Increased rate of successful fertilization and increased incidence of multiple births (twins, etc.)B) Lower circulating progesterone levels in the follicular phaseC) Lower circulating progesterone levels in the luteal phaseD) Higher circulating estrogen levels in the luteal phaseE) Increased production of sperm
What will be an ideal response?
A, D
You might also like to view...
Parasympathetic effects are localized and short-lived because
A) muscarinic receptors are deactivated by norepinephrine. B) acetylcholine is inactivated at the synapse by acetylcholinesterase. C) norepinephrine hyperpolarizes the postganglionic membrane. D) norepinephrine is inactivated at the synapse by monoamine oxidase. E) epinephrine blocks the muscarinic receptors.
During the plateau phase of a cardiac muscle cell's action potential, the membrane stays
A. depolarized as potassium exits and calcium enters. B. depolarized as potassium enters and calcium exits. C. repolarized as sodium enters and calcium exits. D. hyperpolarized as sodium and calcium exit. E. hyperpolarized as potassium enters and calcium exits.
The principle force that causes movement of fluid from the tissues into the capillaries is
a. the hydrostatic pressure of the venous blood b. the hydrostatic pressure of the arterial blood c. the osmotic pressure created by the plasma proteins d. the pressure of the lymph in the tissues around the capillaries e. none of the above
Which of the following statements about the uterine tubes is FALSE?
a. they perform peristaltic contractions to propel the egg toward the uterus b. they provide a nutrient-rich environment that contains lipids and glycogen c. they are a passageway for the elimination of menstrual fluids d. each consists of an ampulla, isthmus, and infundibulum