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Chapter 37: Q. 34 (page 1079)

The adrenal medulla contains two types of secretory cells, what are they and what are their functions?

Short Answer

Expert verified

The adrenal medulla primarily secretes the following hormones:

  • epinephrine (adrenaline)
  • norepinephrine (noradrenaline)

Step by step solution

01

Step : 1 An Explanation of Epinephrine and Norepinephrine

  • Epinephrine is the primary hormone of the adrenal medulla and is the source of 75–80% of its discharges.
  • Epinephrine and norepinephrine speed up the release of stored calories in fatty tissue and glucose in muscle tissue.
  • Neural impulses from the sympathetic nerve system increase the secretion of epinephrine and norepinephrine.
02

Step : 2 Functions of epinephrine and norepinephrine.

  • To maintain the body's water and mineral balance.
  • To control the body's carbohydrate metabolism in order to keep blood glucose levels within normal range.
  • To control the maturation of sexual organs and traits.
  • To activate the fight-or-flight response when the sympathetic nervous sends messages to the body.

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Most popular questions from this chapter

Glucagon is the peptide hormone that signals for the body to release glucose into the bloodstream. How does glucagon contribute to maintaining homeostasis throughout the body? What other hormones are involved in regulating the blood glucose cycle?

Compare and contrast hormonal and humoral stimuli.

A rise in blood glucose levels triggers release of insulin

from the pancreas. This mechanism of hormone

production is stimulated by:

a. humoral stimuli

b. hormonal stimuli

c. neural stimuli

d. negative stimuli

What effect will a cAMP inhibitor have on a peptide
hormone-mediated signaling pathway?
a. It will prevent the hormone from binding to its
receptor.
b. It will prevent activation of a G-protein.
c. It will prevent activation of adenylate cyclase.
d. It will prevent activation of protein kinases.

How is hormone production and release primarily controlled?
See all solutions

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