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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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.
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
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.