The reason it is more appropriate to call an erythrocyte a "formed element" rather than a "cell" is that erythrocytes
A. are actually dead.
B. lack a nucleus and organelles.
C. have lots of inclusion molecules.
D. are not red.
E. can form a rouleau when moving through a capillary.
B
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The central, raised area of the breast where the newborn suckles is called the
A) lactirferous duct. B) areola. C) nipple. D) fornix. E) lactiferous sinus.
The ________ of a sperm contains the enzymes essential for fertilization
A) acrosomal cap B) neck C) middle piece D) flagellum E) None of the answers is correct.
Which of the following exemplifies the antagonistic effects of the two divisions of the ANS?
A. Blood clotting B. Blood flow to skeletal muscles C. Sweating D. Erection of the hair E. Intestinal motility
The amount of CSF within the brain at any given moment is approximately
A. 12 ml. B. 1,200 ml. C. 600 ml. D. 4,800 ml. E. 130 ml.