The cells, tissues, and organs in the endocrine system that secrete hormones into body fluids.

Substance secreted by an endocrine
gland to influence structure or function
of an organ or gland.

A pea-sized gland that sits at the base of the brain.

aden/o

A set of reactions that respond to stress.

A hormone derived from cholesterol.

Water soluble hormones that include amines, peptides,
proteins, and glycoproteins.

A gland that controls the activity of the pituitary gland and is divided into two parts: anterior and posterior.

pituitar/o

Factors that increase the activity of the sympathetic nervous system and can threaten homeostasis.

Tendency of an organism to maintain a
constant internal environment.

Increases heart rate and blood pressure, dilates bronchial tubes, releases glucose from storage.

A gland located below the larynx that consists of
2 broad lobes connected by an isthmus.

-emia

The type of stress that threatens that affects the survival of tissues, such as extreme cold, prolonged exercise, oxygen deficiency, or infections.

The chemicals in the cell that respond to binding of the hormone, and cause changes in the cell.

Lipids produced from the fatty acid,
arachidonic acid, in cell membranes.

A gland whose cells produce over 30 steroids, some of which are hormones that are vital to survival, and is the outer layer of a specific gland.

-tropin

A hormone from adrenal cortex that Increases blood amino acids, fatty acid release, and glucose
formation from noncarbohydrates.

Messenger molecules secreted from certain glands that never reach the bloodstream and are not true hormones.

Secreted by the anterior lobe of the
pituitary gland; stimulates hormone
secretion and egg production by ovaries
and sperm production by testes.

Glands consisting of consist of tightly packed secretory cells covered by a thin capsule of connective tissue; secretory cells are associated with capillaries.

-agon

A stage of stress in which CRH from the hypothalamus travels to the anterior pituitary, and increases ACTH secretion, which increases cortisol secretion from the
adrenal cortex.