Fixed macrophages in the _______ remove worn out RBCs from circulation.
A) liver and spleen
B) lung and kidney
C) pancreas and thymus
D) spleen and kidney
Ans: A) liver and spleen
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During hyperventilation, arterial levels decrease because CO2 is blown off more rapidly than it is being produced in the tissues
Indicate whether the statement is true or false
Inherited traits controlled by two or more genes are called:
A) incomplete dominance. B) codominance. C) polygenic inheritance. D) multiple alleles.
The closure of a precapillary sphincter prevents blood flow to tissues from:
A) venules. B) muscular arteries. C) elastic arteries. D) arterioles.
Any situation that upsets homeostasis and threatens one's physical or emotional well-being is called ________
A) hirsuitism B) pathology C) stress D) disease E) hyperthyroidism