Define ECF and ICF
What will be an ideal response?
The ECF, or extracellular fluid, is made up of the interstitial fluid of peripheral tissues and the plasma of circulating blood. The ICF, or intracellular fluid, consists of the cytosol inside cells.
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The enterohepatic circulation reabsorbs bile salts in the distal portion of the small intestine (ileum). All of the following statements about the enterohepatic circulation are true except one
Select the statement below that is not true of the enterohepatic circulation? A) Reabsorbing bile salts in the ileum gives more time to emulsify lipid and aid in their absorption within a greater length of the small intestine. B) All of the components of bile are recycled by this circulation. C) Reabsorption of bile salts reduces the need to synthesize new bile salts. D) The reabsorption of bile salts allows them to be reused within new bile.
Of the capillary beds associated with each nephron, the one that is both fed and drained by arterioles is the:
A) peritubular capillaries
B) pyramidal capillaries
C) glomerulus
D) Henle capillaries
E) Bowman's capillaries
Humans are able to distinguish several million shades of color because
A. humans have large retinas. B. humans have binocular vision. C. they have many different types of cone cells. D. different proportions of cone cells respond to each wavelength of light. E. humans have more cones than rods.
During hemorrhagic shock in which blood pressure is decreased, which of the regulatory mechanisms is most important is increasing cardiac output to help maintain blood pressure?
A. increased sympathetic stimulation of the heart B. increase venous return C. increase in parasympathetic stimulation of the heart D. increase vagal stimulation of the heart E. increase in the amplitude of the heart sounds