Exam 25: Endocrine Regulation

Endocrine glands can be made up of:

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

The amino acid tyrosine is used to produce epinephrine and the hormones made in the thymus gland.

Hormones can be classified based on their chemical structure or their function.

Tropic hormones:

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

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

How do the actions of prostaglandins differ from the actions of hormones?

Which of the following is not a functional classification of hormones?

Some nonsteroid hormones do not use a second messenger but are taken into the cell by endocytosis and act directly on their target cells.

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

Match each chemical classification with a corresponding hormone. -Insulin

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

In comparison with the nervous system, the regulatory effects of the endocrine system are:

The general effect of hormones is to produce regulatory changes within the target cell.

Two specific prostaglandins are thromboxanes and leukotrienes.

Which of the following is not a source of nonsteroid hormones?

Both steroid and nonsteroid hormones produce their effects by increasing the number of enzymes that catalyze cellular reactions.

The compound that is referred to as a tissue hormone is:

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