Damage to the semilunar valve on the right side of the heart would affect blood flow to which vessel?
A) pulmonary trunk
B) aorta
C) pulmonary veins
D) superior vena cava
E) inferior vena cava
Answer: A
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The synapses which occur between axons of presynaptic cells and dendrites of postsynaptic cells are called _____
Fill in the blank(s) with the appropriate word(s).
Macrophages are motile cells that crawl within tissues of the cells. Hepatocytes are stationary cells that are anchored in place within the tissue. Compared to hepatocytes, macrophages would likely have more of which cytoskeletal filament?
A. Microtubules B. Actin filaments C. Cilia D. Myosin filaments E. Intermediate filaments
In renal compensation of acidosis,
A. H+ secretion decreases; bicarbonate excretion increases. B. H+ secretion decreases; bicarbonate reabsorption increases. C. H+ secretion increases; bicarbonate reabsorption increases. D. H+ secretion increases; bicarbonate excretion increases. E. H+ secretion decreases; bicarbonate excretion decreases.
A helpful, meaningful string of 3 nucleotides in mRNA that depicts a code is a/an:
A. Promoter B. Protein C. Exxon D. Intron E. Codon