Exam 45: Hormones and the Endocrine System

If a person loses a large amount of water in a short period of time, he or she may die from dehydration. ADH can help reduce water loss through its interaction with its target cells in the

In an experiment, rats' ovaries were removed immediately after impregnation and then the rats were divided into two groups. Treatments and results are summarized in the table. The results most likely occurred because progesterone exerts an effect on the

The relationship between the insect hormones ecdysteroid and PTTH is an example of

In a lactating mammal, the two hormones that promote milk synthesis and milk release, respectively, are

The reason that the steroid hormone aldosterone affects only a small number of cells in the body is that

A paracrine signal that relaxes smooth muscle cells is

After eating a carbohydrate-rich meal, the mammalian pancreas increases its secretion of

Use the following information to answer the next few questions. Your niece is playing in the backyard and finds a beautiful moth. Being interested in insects, you perform research to find out what kind of moth it is. You determine that it is a luna moth (Actias luna). Similar to other moths, the luna moth moults several times throughout development and ultimately metamorphoses into a mouthless adult. The adult will live for approximately one week with the sole purpose of mating. -In order to attract a mate, female luna moths secrete

Linkage to membrane-bound receptor proteins on target cells activates the typical actions of the

Abnormally reduced somatic growth (dwarfism)can be a consequence of decreased hormone secretion from the

DES is called an "endocrine disrupting chemical" because it structurally resembles, and interferes with, the endocrine secretions of the

Which hormone is incorrectly paired with its action?

Which of the following functions of prolactin are incorrectly paired with the species?

A cell with membrane-bound proteins that selectively bind a specific hormone is called that hormone's

Prostaglandins are local regulators whose chemical structure is derived from

In a positive-feedback system in which hormone A alters the amount of protein X

Melatonin is secreted by

Which of the following has both endocrine and exocrine activity?

The higher level of metabolic activity typical of nonhibernating temperate mammals during the winter months is due to increased secretion of

A disease that destroys the adrenal cortex should lead to an increase in the plasma levels of