Exam 18: Endocrine System

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

Prostaglandins are lipid substances derived from cholesterol.

Some nonsteroid hormones attach to cell membrane sodium channels causing them to open and allowing an influx of sodium into the cell.

A hormone is able to stimulate more cells than a neurotransmitter.

Endocrine glands may be made up of:

Examples of steroid hormones are cortisol,aldosterone,and testosterone.

Match each term with its explanation or definition. -a cell with receptors for a specific hormone

Which of the following nonsteroid hormones bind to receptors associated with a DNA molecule within the nucleus of the target cell?

Match each term with its explanation or definition. -one hormone has the opposite effect of another hormone

All of the following are nonsteroid hormones except:

Thromboxanes and leukotrienes can be called tissue hormones.

One of the later effects of steroid hormones on the cell could be the:

The number of hormone receptors a cell has remains constant throughout the life of the cell.

With a steroid hormone,the amount of hormone is directly related to the magnitude of the response in the target cell.

The "lock-and-key" mechanism allows hormones to bind only with target cells that have receptors that "fit" them exactly.

Match each term with its explanation or definition. -a small amount of hormone allows another hormone to have its full effect

The chemical messengers of the endocrine system are neurotransmitters.

The release of a hormone by a gland is called signal transduction.

A hormone that stimulates the salivary glands (exocrine glands)would be a tropic hormone.

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