Baron von Quacko, famous tag-team heavyweight wrestler, has a famous "sleeper hold" that he uses on opponents. Using only a single digit on each hand, he presses on his opponent's neck (while he has them in a full nelson) until his opponent passes out. What are the structures on which he is pressing, and what is the effect?
A. subclavian arteries; blood flow is stopped
B. carotid bodies; chemoreceptors stimulated and blood pressure decreased
C. baroreceptors in carotid sinus; peripheral vasodilation, decreased heart rate
D. vertebral arteries; blood flow to brain is stopped
Ans: C. baroreceptors in carotid sinus; peripheral vasodilation, decreased heart rate
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F the hematocrit is 40, then the volume occupied by the
a. red blood cells is 60 percent of the total blood volume b. white blood cells is 40 percent of the total blood volume c. red blood cells is 40 percent of the total blood volume d. plasma and other cellular elements is 40 percent of the total blood volume e. red blood cells is 40 percent of the total blood volume, and by the white blood cells is 60 percent of the total blood volume
Tubular reabsorption
a. moves substance from the peritubular capillaries into the tubular fluid b. moves substances from the tubular fluid into the peritubular capillaries c. is considered active if any one of the five steps of transepithelial transport is active d. has characteristics a and b e. has characteristics b and c
A friend confides that she desires to have children but is having trouble conceiving. Which of the following is true regarding implantation?
A) An estimated 60% of implanted embryos later miscarry due to genetic defects of the embryo. B) Detection of human chorionic gonadotropin (hCG) in blood or urine indicates failure of the blastocyst to implant. C) It is estimated that a minimum of two-thirds of all zygotes formed fail to implant by the end of the first week or spontaneously abort. D) In cases where implantation fails to occur, a nonreceptive uterus becomes receptive once again.
Jill, an avid runner, experiences pain on her greater trochanter. Where is Jill's pain located?
A. distal fibula B. posterior scapula C. posterior knee D. heel E. lateral femur