The number of sperm cells in an ejaculate averages
A) about 120 million per milliliter. B) about 20 million per millimeter.
C) about 20 million per liter. D) about 20 million per milliliter.
A
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The foramen ovale ________
A) connected the two atria in the fetal heart B) is a condition in which the heart valves do not completely close C) is a connection between the pulmonary trunk and the aorta in the fetus D) is a shallow depression in the interventricular septum
Basophils are specialized in that they:
produce and secrete antibodies that attack cells or proteins in distant portions of the body are enthusiastic phagocytes, often attempting to engulf items as large or larger than themselves contain histamine that exaggerates the inflammation response at the injury site contain microphages that engulf invading bacteria none of the choices are correct
Which bone would feel relatively small and diamond shaped and have a hole in its center?
A) Coccyx B) Sacrum C) Frontal D) Atlas
Sherry has Addison's disease so her ability to produce cortisol is reduced. How does her hypothalamus respond?
A. The hypothalamus will increase the production of ACTH in response to low levels of cortisol. B. The hypothalamus will increase the production of CRH in response to low levels of cortisol. C. The hypothalamus will produce cortisol if the adrenal cortex cannot. D. The hypothalamus does not respond to low levels of cortisol.