____ has a positive effect on appetite
a. CCK
b. PYY3-36
c. Leptin
d. Insulin
e. Ghrelin
E
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Which functional feature best describes the manner in which cardiac muscle contracts?
Automaticity (autorhythmicity) promotes the spontaneous contraction of the cardiac muscle cells. Refractory periods in cardiac contractions are relatively short. Only some motor units contract in cardiac muscle. Nerve fibers must stimulate cardiac muscle cells for them to contract.
Match the term with the appropriate description or definition.A. Sum of the inspiratory reserve, expiratory reserve, tidal, and residual volumesB. Volume of air inspired during a normal inspirationC. Volume of air remaining in lungs after the most forceful expirationD. Sum of the expiratory reserve, inspiratory reserve, and tidal volumesE. The amount of air that can be forcefully expired after expiration of the normal tidal volumeTotal lung capacity
Fill in the blank(s) with the appropriate word(s).
In the ascending limb of the nephron loop (loop of Henle), the:
A) thick segment is permeable to water but impermeable to sodium and chloride ions. B) thin segment is not permeable to sodium ions, chloride ions, or water. C) movement of water and solutes is passive. D) thick segment is impermeable to water but permeable to sodium and chloride ions.
Which plasma protein is a major contributor to the osmotic pressure of plasma?
A) fibrinogen B) steroid-binding protein C) hormone-binding protein D) albumin E) gamma globulin