The tubular structure of the uterus that projects a short distance into the vagina is called the
A) urethra.
B) ejaculatory duct.
C) cervix.
D) perimetrium.
E) isthmus.
C) cervix.
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It is normal for breasts to shrink after lactation ceases. This is a consequence of ________ in human breast cells.
A. necrosis B. infarction C. atrophy D. apoptosis E. gangrene
In capillary exchange, which of the following statements is true?
A. Most fluid that leaves the arterial end of a capillary reenters the venous end of a capillary. B. Constriction of the precapillary sphincter will increase blood pressure in the capillary. C. Most fluid that leaves the arterial end of a capillary enters the lymphatic system. D. Interstitial protein concentration is normally higher than plasma protein concentration. E. Interstitial fluid normally has a higher osmotic pressure than plasma.
Parathyroid hormone is released by the thyroid gland and causes the small intestine to increase calcium absorption
Indicate whether this statement is true or false.
Which layer of the vessel wall facilitates vasoconstriction and vasodilation?
A. The tunica externa B. The tunica adventitia C. The tunica interna D. The tunica media E. The tunica sclerosa