Exam 25: Endocrine Regulation

Match each chemical classification with a corresponding hormone. -Insulin

Upregulating and downregulating hormone receptor proteins on the membrane of a target cell will change its sensitivity to a hormone.

Some cases of hormone deficiency can be traced to an obstruction in the duct through which the hormone must pass.

Both the endocrine system and nervous system are important in regulation of body function.

Match each chemical classification with a corresponding hormone. -Melatonin

In terms of affecting hormone action, synergism and permissiveness mean the same thing.

The immediate effect of a steroid hormone on a cell is the:

Short feedback loops tend to minimize wide fluctuations in hormone secretion rates.

Explain how cAMP acts as a second messenger for certain nonsteroid hormones.

Because most cells secrete prostaglandins, there is usually a fairly high concentration of prostaglandins in the blood.

The last step in the nonsteroid hormone mechanism of action is:

Examples of nonsteroid hormones are insulin, oxytocin, and epinephrine.

Thromboxanes and leukotrienes can be called tissue hormones.

Synergism in hormone activity can be defined as:

The anterior pituitary gland can be either stimulated to release hormones or inhibited from releasing hormones by secretions from the hypothalamus.

The fixed-membrane-receptor model is used in describing the action of nonsteroid hormones.

If a small amount of hormone produced a disproportionately great response in a cell, the hormone was most likely a nonsteroid hormone.

The term downregulation refers to the:

Many endocrine glands are made of epithelial tissue.

Match each term with its explanation or definition. -Hormone that targets another endocrine gland