Which of these neuroglial cells forms the myelin sheath in the central nervous system?
A) astrocytes
B) oligodendrocytes
C) Schwann cells
D) ependymal cells
E) satellite cells
B
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An ectopic pregnancy is also known as a(n)
A. molar pregnancy. B. yolk sac pregnancy. C. extrauterine pregnancy. D. breech birth. E. chemical pregnancy.
Which of the following GFR-regulating mechanisms is initiated by cells of the juxtaglomerular complex?
a) renin-angiotensin system b) autonomic regulation c) myogenic mechanism d) natriuretic peptides
Which of the following is not associated with an increase in stroke volume?
a. increased end-diastolic volume b. increased contractility of the heart c. increased end-systolic volume d. increased preload e. increased venous return
Smaller birds tend to lay smaller eggs with a smaller yolk supply than larger birds. This would be recognized as an example of
a. down regulation. b. a preadaptation. c. genetic fitness. d. a cost-benefit trade off. e. intrinsic control.