Sympathetic innervation of the hearta: increases the heart rate.b: decreases the heart rate.c: increases the force of contractions.d: decreases the force of contractions.e: has no effect on contraction force.
A. b, d
B. a, d
C. a, e
D. b, e
E. a, c
Answer: E
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Which statement regarding sodium reabsorption is not accurate?
a. it plays a role in glucose, amino acid, and urea reabsorption in the proximal tubule. b. it is under hormonal control in the distal tubule. c. in the loop of Henle, it contributes to the formation of concentrated urine. d. approximately 0.5% of sodium is reabsorbed on a daily basis. e. aldosterone is a key hormone involved in facultative reabsorption.
Select the correct statement about olfaction
A) Olfactory receptors have a high degree of specificity toward a single type of chemical. B) Substances must be volatile and hydrophobic in order to activate olfactory receptors. C) Some of the sensation of olfaction is actually one of pain. D) Olfactory adaptation is only due to fading of receptor cell response.
Edema is not favored when
A) the plasma concentration of albumin is reduced. B) endothelial permeability goes up. C) capillary hydrostatic pressure is elevated. D) interstitial fluid movement increases. E) liver damage decreases production of blood proteins.
Proteins are
A. polymers made of repeating units of carbohydrates. B. monomers made of repeating subunits of polymers. C. monomers. D. polymers made up of amino acid monomers. E. neither monomers nor polymers.