At which stages does the chromosome number double?
A) prophase
B) metaphase
C) interphase
D) telophase
Ans: C) interphase
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Blood flow through most organs in the systemic circuit is regulated primarily by increasing or decreasing the ________ activity to arteriolar smooth muscles in the organ. Another form of regulation, called ________, depends upon the metabolic activity of the organ. Increased activity leads to increased interstitial fluid metabolites, which cause ________ of the arterioles. The former is a type of ________ regulation of blood flow; the latter is an example of ________ regulation.
A. sympathetic; active hyperemia; dilation; extrinsic; intrinsic B. parasympathetic; reactive hyperemia; dilation; extrinsic; intrinsic C. parasympathetic; active hyperemia; constriction; extrinsic; intrinsic D. sympathetic; reactive hyperemia; dilation; intrinsic; extrinsic E. sympathetic; flow autoregulation; constriction; intrinsic; extrinsic
The endoplasmic reticulum is an example of a(n) ________ organelle
A) filamentous B) extracellular C) interstitial D) membranous E) bound
From ages 20 to 70, we see a loss of lean body mass as a result of up to 30% loss in the number of muscle cells, atrophy of muscle cells, and a general decrease in muscle strength.
Answer the following statement true (T) or false (F)
Tonsils
A. increase in size in adults. B. are located in both the oral and abdominal cavities. C. provide protection against bacteria entering the oral and nasal cavities. D. contain red pulp and white pulp. E. are not functional in children.