A specific molecule binds to a membrane receptor. This molecule is called a _________.
Fill in the blank(s) with the appropriate word(s).
Ligand
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Sympathomimetic drugs might be used to
A) decrease heart rate. B) decrease blood pressure. C) dilate airways. D) increase gastric motility. E) reduce blood sugar levels.
The periosteum is secured to the underlying bone by ________
A) perforating (Sharpey's) fibers B) Volkmann's canals C) a bony matrix with hyaline cartilage D) the struts of bone known as spicules
Define ligaments
What will be an ideal response?
Organs that recondition the blood
a. receive disproportionately large percentages of the cardiac output b. can withstand temporary reductions in blood flow much better than organs that do not recondition the blood c. must receive a constant blood supply in order to maintain homeostasis d. have characteristics a and b e. have characteristics b and c