The anatomic position allows all observers to have a common point of reference.
Indicate whether this statement is true or false.
TRUE
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Feedforward regulatory processes
A. maximize fluctuations in the regulated variable. B. work in anticipation of changes in regulated variables. C. are identical to positive feedback processes. D. lead to instability of the regulated variable. E. tend to force physiological variables away from their set point.
What effect do fibers from the micturition center in the brain have on the sympathetic neurons that control the internal urethral sphincter?
a) they inhibit them b) they excite them
Which of the following events occurs last?
A. IP3 stimulates Ca2+ release from the endoplasmic reticulum.
B. Ca2+ binds with calmodulin.
C. IP3 (inositol triphosphate) is produced.
D. Epinephrine combines with membrane-bound receptor on smooth muscle cell.
E. Calmodulin binds to the enzyme that phosphorylates myosin and cross-bridges form.
The layer of loose connective tissue that directly supports the digestive epithelium is the
A) lamina propria. B) muscularis mucosae. C) submucosa. D) submucosal neural plexus. E) myenteric plexus.