Endocrine System

Hormones are secreted into

the bloodstream

In order for a hormone to be effective its target cells must have a 

receptor for the hormone

What type of hormone is synthesized from cholesterol?

Steroid hormone

Which pair of hormones is hydrophilic?

Peptide hormones and catecholamines

Which hormones must bind to transport proteins in order to reach their target cells?

Hydrophobic hormones

Negative feedback control of hormone secretion begins when a

Rising level of hormone is detected by the gland that produced it

The endocrine system works closely with the__to control and coordinate the intricate parts and functions of the body.

The nervous system

The hypothalamus gland is physically attached to what other endocrine gland?

Pituitary gland

Which hormone does the hypothalamus gland produce?

Oxytocin

Which gland is the master endocrine gland?

Pituitary

When oxytocin is released into the bloodstream, what is one of its effects?

Milk letdown

Which hormones are responsible for male secondary sex characteristic development?

Androgens

Where is insulin produced?

Pancreas

The hormonal part of the “fight or flight” response is produced in the

Adrenal gland

The target for luteinizing hormone in females is

ovaries

The anterior pituitary gland produces somatotropin, which is also known as

Growth hormone

Where is antidiuretic hormone that is produced in the hypothalamus stored before its release into the bloodstream?

Posterior pituitary gland

Bovine somatotropin (BST) is used to

Increase milk production in dairy cows

Thyroid-stimulating hormone is produced by the

Anterior pituitary gland

In a male follicle-stimulation hormone

Stimulates spermatogenesis

Dwarfism is a result of

Growth hormone deficiency

In a male prolactin 

Has no known effect

The hormone that results in a rise in blood glucose when it is released into the bloodstream is

Glucagon

Which drug will cause a female to “super ovulate” in preparation for embryo transfer?

Follicle-stimulating hormone(FSH)

The primary target for glucocorticoid hormone is the

Whole body

The function of ADH is to

Conserve water

Animal’s that suffer from a defiency of ADH are likely to show clinical signs that include 

Polyuria

The gland that helps regulate the body’s blood calcium levels is the

Parathyroid hormone

Which pair of glands are each actually two separate glands that look like one gland?

Pituitary and adrenal glands

Administration of which classification of drugs can cause effects that mimic the body’s natural white blood cell stress response?

Glucocorticosteroids

The most active form of thyroid hormone is

Triodothyronine

When a normal, healthy animal is exposed to cold temperatures, what happens to the production of thyroid hormone?

It is increased to increase the animal’s metabolic rate

How does the metabolic rate affect an animal’s core temperature?

As the metabolic rate increases, so does the animal’s core temperature

Which two hormones are involved in maintaining the homeostasis of blood calcium levels?

Parathyroid and calcitonin hormone

Milk fever and eclampsia are two pathogenic conditions that result from

Hypercalcemia

Which gland is not located in the head and neck area of an animal?

Adrenal gland

The term iatrogenic means

Caused by treatment

Aldosterone helps regulate__levels in the body

Electrolyte

The fight-or-flight hormones are

Epinephrine andnorepinephrine

Diabetes mellitus is a disease caused by a defiency of

Insulin

The principle androgen prodced in the testes is

Testosterone

Estrogens are produced when__induces ovaries to develop follicles

FSH

In most animal species ovulation occurs when the blood level of__peaks

LH

Besides the gonads, which other gland produces sex hormones?

Adrenal cortex

Melatonin is produced by the

pineal body

The gland that plays a direct role in development of the immune system is the

Thymus

Erythropoietin affects the development of

Red blood cells