Normally most of the blood at any one time is in the capillary beds, because this is where material exchange is taking place
Indicate whether the statement is true or false
F
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Distinguishing characteristics of veins include which of the following?
A. Veins have walls consisting only of endothelial cells. B. All veins have valves to ensure one-way movement of blood. C. All veins carry deoxygenated blood. D. All veins carry blood toward the heart. E. All veins have thick, elastic walls.
. The type of bone tissue that is replaced more frequently is ________ bone; the part of the femur that is replaced more frequently is the __________
A. compact; distal epiphysis B. compact; diaphysis C. spongy; distal epiphysis D. spongy; diaphysis
As the body becomes dehydrated, the osmolarity of the body fluids decreases.
a. true b. false
Blood colloid osmotic pressure is largely due to
A. the high amount of water in the blood, and it promotes diffusion out of the capillaries. B. the proteins in the blood, and it promotes reabsorption. C. the pressure generated by the heart, and it favors osmosis into the arteriole end of the capillary bed. D. the proteins in the blood, and it promotes filtration. E. the high amount of water in the blood, and it promotes filtration from arterioles.