In the disease mononucleosis ("mono"), the spleen enlarges because of increased numbers of cells, phagocytic as well as others. Common symptoms of this disease include pale complexion, a tired feeling, and a lack of energy sometimes to the point of not being able to get out of bed. What might cause these symptoms?
What will be an ideal response?
A major function of the spleen is to destroy old, defective, and worn-out red blood cells. As the spleen increases in size, so does its capacity to eliminate red blood cells, and this produces anemia. The decreased number of red blood cells decreases the blood's ability to deliver oxygen to the tissues and thus metabolism is slowed down. This would account for the tired feeling and lack of energy. Because there are fewer red blood cells than normal, the blood circulating through the skin is not as red, and so the person has a pale skin coloration.
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Female orgasm is accompanied by peristaltic contractions of the uterine and vaginal walls and by rhythmic contractions of which of the following muscles?
A) internal oblique and erector spinae B) ischiocavernosus and internal oblique C) erector spinae and ischiocavernosus D) ischiocavernosus and bulbospongiosus E) bulbospongiosus and internal oblique
CRH is important because
a. it induces fetal cortisol production b. it results in fetal lung development c. it causes uterine contractions d. of reasons a and b e. of reasons b and c
Tubular secretion is important
a. in the renal regulation of hydrogen ion concentration. b. for the elimination of metabolic waste products from the body. c. in the renal regulation of sodium balance. d. both (a) and (b) above. e. all of these answers.
Calculate the predicted vital capacity for a 56-year-old-male who is 188 cm in height
A) 4.015 L B) 542.624 L C) 240.43 L D) 2.876 L