Discuss briefly the mechanism of action of aspirin in the human body.
What will be an ideal response?
Prostaglandins are local hormones that are manufactured and released when cell membranes are distorted or damaged-that is, injured. The prostaglandins then act on the endings of the neurons that mediate pain in the injured areas. The prostaglandins sensitize the neurons to mechanical stimulation and to stimulation by two other local hormones, histamine and bradykinin, which are released more slowly from the damaged tissue. Aspirin blocks the synthesis of the prostaglandins by inhibiting two forms of the cyclooxygenase enzyme (COX-1 and COX-2). The antipyretic action has also been spelled out: A specific prostaglandin acts on the anterior hypothalamus to decrease heat dissipation through the normal procedures of sweating and dilation of peripheral blood vessels. Aspirin blocks the synthesis of this prostaglandin in the anterior hypothalamus, and this is followed by increased heat loss.
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Since more suburbanites now commute to work in other suburbs
a. urban traffic congestion is less. b. suburban traffic congestion is much worse. c. highways are less congested. d. urban traffic congestion is non-existent.
Which country instituted the apartheid until 1994 that dictated where different racial groups could live, work, and behave?
A. South Africa B. Belize C. Costa Rica D. Guyana
Which of the following justifies differential treatment of men and women based on a perceived fundamental difference?
a. androcentrism b. gender polarization c. biological essentialism d. androgyny
Which of the following is NOT a component of a child’s self-image according to Hertz?
a. how he imagines someone else seeing him b. how he sees and understands himself c. how he imagines other people judging him d. how he feels about imagine judgements of others