Exam 16: The Endocrine System

Steroid hormones exert their action by ________.

Both "turn on" factors (hormonal,humoral,and neural stimuli)and "turn off" factors (feedback inhibition and others)may be modulated by the activity of the nervous system.

All amino acid based hormones are lipid soluble and can cross the plasma membrane.

Normal development of the immune response is due in part to hormones produced by the ________.

Oxytocin and ADH are produced in the posterior pituitary.

Hypersecretion of catecholamines (epinephrine and norepinephrine)can result in hypertension.

The beta cells in the pancreatic islets produce insulin.

Match the following: -Hyposecretion of the adrenal cortex.

Match the following: -Hypersecretion of the adrenal cortex.

Atrial natriuretic peptide is a hormone that controls blood pressure in part by increasing the urinary excretion of sodium.

Thyroid hormone production requires the presence of both iodine and calcium.

The most important mineralocorticoid regulator of electrolyte concentrations in extracellular fluids is ________.

Aldosterone is the most potent mineralocorticoid produced by the adrenal glands but the least abundant.

Figure 16.3 Using Figure 16.3, match the following: -Produces epinephrine.

A man has been told that he is NOT synthesizing enough follicle-stimulating hormone (FSH),and for this reason he may be unable to father a child.Choose the correct statement to explain this problem.

In circumstances where the body requires prolonged or increased levels of a hormone,the DNA of target cells will specify the synthesis of more receptors on the surface of the cells of the target organ.This is known as ________.

As a result of stress the anterior pituitary releases ________,which stimulates release of hormones from the adrenal cortex that retain sodium and water,increase blood sugar,and begin breaking down fats.

Following workup for symptoms of decreased libido and erectile dysfunction,a patient is told that his pituitary is hypersecreting prolactin.Is there need for concern about this young man?

Aldosterone ________.

Addison's disease is usually due to an insufficient output of glucocorticoids only.