The nervous system and certain chemicals can cause the constriction of a blood vessel. This is known as ________.
A. vascular spasm
B. platelet adhesion
C. hemostasis
D. coagulation
Answer: A
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In males, meiosis involves ________ cycle(s) of cell division and produces ________ cells, or gametes, each containing 23 individual chromosomes.
A) one; four B) two; four C) one; six D) two; two E) four; four
A new, non-surgical alternative to vasectomy called Vasalgel is done by injecting an impassable gel into the ductus deferentia. What contraceptive effect will this have?
A. The vasectomy causes secretions that interrupt testosterone secretion from interstitial cells. B. The prostate gland will be blocked from secreting nutrients for sperm into the ductus deferentia. C. Sperm will be blocked from traveling from the testis to the urethra. D. Ciliated columnar cells will be blocked from secreting sperm-fueling glycogen.
When the kidney goes into failure, one of the signs that doctors will see is that red blood cells will crenate (shrivel up). Why does this happen in kidney failure? What process is occurring to the blood cells?
What will be an ideal response?
Normally, the amount of bicarbonate ions secreted into the intestine nearly equals the amount of acid secreted by the stomach during digestion.
Answer the following statement true (T) or false (F)