What about the spleen is false:
(a) it produces new cells and destroys the old (haematopiesis)
(b) is a blood reservoir
(c) it defends by initiating macrophages to remove microorganisms in blood and phagocytose them
(d) is the source of lymphocytes before birth and enables lymphocytes to develop into T cells
Ans: (d) is the source of lymphocytes before birth and enables lymphocytes to develop into T cells
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The mediastinum is within the ventral cavity.
Indicate whether this statement is true or false.
Proteins are the main functional component of cells, and protein-based enzymes govern the rate of cellular division
a. True b. False Indicate whether the statement is true or false
The total blood volume is ____ plasma
A. 50% B. 90% C. 75% D. 55%
Consider the equation F = ?P/R. It describes the flow (F) of fluid in a tube in which there is a pressure difference (?P) between the two ends and a resistance (R) to flow. Based on this equation, which is a correct conclusion?8-15-2013
A. If both the resistance and the pressure gradient in a tube increase, the flow must also increase. B. The flow of fluid in a tube depends upon the absolute pressure at the beginning of the tube. C. The greater the resistance to flow in a tube, the greater the rate of flow for any given pressure difference. D. The rate of flow in a tube will decrease if the resistance to flow is decreased. E. The rate of fluid flow in a tube will increase if the pressure at the beginning is increased while the pressure at the end of the tube stays the same.