Which of the following stimulates gallbladder contraction?
a. CCK.
b. secretin.
c. sympathetic stimulation.
d. both (a) and (c) above.
e. both (b) and (c) above.
A
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A variety of smooth muscle relaxants can promote the occurrence of "Ca++ sparks" beneath sarcolemma of smooth muscle
The Ca++ sparks are thought to originate from a local activation of the ryanodine receptor, just beneath the sarcolemma. These Ca++ sparks promote relaxation by: A. activating the Na+-Ca++ antiporter in the smooth muscle B. activating the Ca++-dependent phosphatase calcineurin in the smooth muscle C. activating Ca++-dependent K+ channels in the smooth muscle D. promoting myosin light chain phosphorylation smooth muscle E. activating Rho kinase in the smooth muscle
A bird's chest must be able to expand or open during the process called __________________
Fill in the blank(s) with correct word
The neural change responsible for retention or storage of knowledge is known as a(n) ____
a. input b. bit c. code d. modality e. engram
Which of the following is considered to be a positive chronotropic agent?
a. acetylcholine b. sodium channel antagonists c. isoproterenol d. calcium channel blockers