Based on what we have learned about the regulation of blood flow to various organs, do you think it is wiser to rest or exercise after a heavy meal? Explain your answer.
What will be an ideal response?
At rest, the abdominal organs receive approximately 24% of the total blood flow. With exercise, blood flow is shifted away from abdominal organs to skeletal muscles. It would therefore be wiser to rest after a heavy meal to allow optimum function of the organs of digestion and absorption of nutrients.
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The walls of bronchioles are dominated by ________, whose activity is regulated by the autonomic nervous system.
A) C-shaped rings of hyaline cartilage B) elastic cartilage C) skeletal muscle D) a mix of cartilage plates and smooth muscle E) smooth muscle
Which class(es) of hormones is/are released by exocytosis upon appropriate stimulation?
a. peptides b. catecholamines c. steroids d. thyroid hormone e. Both a and b
Cells that require a lot of energy will have more folds in the inner membrane of which type of organelle?
a. lysosome b. mitochondrion c. Golgi d. centriole
"Rest and digest," as well as the maintenance of homeostasis, is associated with the action of the ________ division of the ANS.
Fill in the blank(s) with the appropriate word(s).