The outer portion of the adrenal gland that produces glucocorticoid, mineralocorticoid, and sex hormones.
Two endocrine glands located near the cranial poles of the kidneys; each consists of an outer cortex and an inner medulla.
The inner portion of the adrenal gland that produces the hormones epinephrine and norepinephrine.
A hormone secreted by the anterior pituitary gland, which in turn activates the cortex of the adrenal gland. The adrenal cortex then releases its own hormones.
Abbreviation for adrenocorticotropic hormone; vital to the normal function and development of the adrenal cortex.
A mineralocorticoid hormone secreted by the adrenal cortex. Stimulates the kidney to conserve sodium ions and water and to eliminate potassium and hydrogen ions.
The form of metabolism by which cells build complex compounds from simpler ones, using energy.
Hormones that promote the development of male characteristics; male sex hormones. The principle one is testosterone.
Anterior Pituitary Gland
The adenohypophysis; the rostral portion of the pituitary gland that produces seven hormones, many of which influence other endocrine glands. Develops from glandular tissue.
A hormone released by the posterior pituitary; facilitates water conservation in the body by promoting water reabsorption from urine in the collecting ducts.
The hormone secreted by the thyroid gland that prevents the level of calcium in the blood from getting too high; deposits calcium into the "bone bank."
The breaking down of nutrients into smaller and simpler materials for use by the cell to produce energy.
The portion of the immune system that produces "killer" cells that directly attack foreign invaders.
A hormone released by the duodenum when chyme enters from the stomach; slows gastric emptying and motility while increasing intestinal motility. Also stimulates the pancreas to release digestive enzymes into the duodenum.
Literally "yellow body." The solid endocrine structure that forms from the empty ovarian follicle after ovulation under stimulation from luteinizing hormone; it produces progestin hormones, principally progesterone. that are necessary to maintain pregnancy.
A disease resulting from a deficiency of antidiuretic hormone from the posterior pituitary gland; results in PUPD.
A disease resulting from a deficiency of the hormone insulin from the pancreatic islets; lack of insulin prevents glucose from entering cells and being used as energy. Results in hyperglycemia, glycosuria, PUPD, polyphagia and weight loss.
Serves as a nervous system passageway between the primitive brain stem and the cerebrum; three major structures include the thalamus, hypothalamus, and pituitary.
A condition seen in lactating dogs and cats that results from hypocalcemia; early signs include muscle tremors and spasms.
Glands or cells that release their regulatory products (hormones) directly into the bloodstream; control most metabolic functions.
Commonly called adrenaline; a hormone secreted by the adrenal medulla under stimulation by the sympathetic nervous system. Produces part of the fight-or-flight response that results when an animal feels threatened.
The hormone produced by the kidney in response to hypoxia that stimulates the red bone marrow to increase its production of red blood cells.
Hormones produced by the developing follicle that promote the development of female characteristics; prepares the female for breeding.
Glands that release their secretions through ducts that lead directly to the location intended to be controlled.
A whole-body response resulting from an animal feeling threatened that prepares the body for intense physical activity; results from a combination of direct sympathetic nerve stimulation and the release of epinephrine and norepinephrine into the bloodstream from the adrenal medulla.
In the ovary, consists of an oocyte surrounded by fluid and the cells that produced it; thyroid _____ contain small globules of thyroid hormone precursor called colloid surrounded by simple cuboidal cells.
The anterior pituitary hormone that stimulates the growth and development of follicles in the ovary of the female; triggers spermatogenesis in the male.
A hormone produced by the G cells in the stomach; stimulates the gastric glands to secrete hydrochloric acid and digestive enzymes to start the digestive process and cause the fundus to relax.
A hormone produced by the pancreas that raises blood glucose by stimulating the liver to break down glycogen and engage in gluconeogenesis.
A group of hormones with similar actions produced by the adrenal cortex; the most prominent effect is to raise blood glucose levels. Other effects: help the body to resist the effects of stress and to maintain blood pressure.
A hormone that stimulates the growth and development of the gonads; usually refers to follicle-stimulating hormone and luteinizing hormone.
The anterior pituitary hormone that promotes body growth in young animals and helps regulate the metabolism of porteins (anabolism), carbohydrates, and lipids (catabolism) in all of the body's cells. Also called somatotropic hormone or somatotropin.
Chemical messengers of the body that are produced and excreted by specific cells (endocrine glands) for the purpose of regulating organs and cells.
Excessive secretion of hormones from the adrenal cortex; also called Cushing's disease. Common signs include PUPD, polyphagia, and a pot-bellied appearance.
Deficient secretion of hormones from the adrenal cortex; also called Addison's disease.
A portion of the diencephalon that has extensive links to the brain and to the pituitary gland; functions as an important bridge between the nervous and endocrine systems.
A hormone produced by the beta cells of the pancreatic islets; main action is to allow glucose to be absorbed into body cells and used for energy, decreasing blood glucose levels.
Interstitial Cell Stimulating Hormone
The anterior pituitary hormone that stimulates the interstitial cells in the testes to produce testosterone; also known as luteinizing hormone.
The anterior pituitary hormone that stimulates ovulation in most species and then causes the empty follicle to develop into the corpus luteum. Stimulates the interstitial cells of the testes to produce testosterone.
The anterior pituitary hormone that apparently influences the pigment cells of the skin; its precise role in mammals is not well understood.
A hormonelike substance produced by the pineal body; appears to affect moods and wake-sleep cycles and may affect timing of seasonal estrus in some species.
A disease seen in lactating cattle that results from hypocalcemia; signs include muscle weakness and an inability to stand.
The immediate effect of nursing or milking; movement of milk from the alveoli and small ducts down into the larger ducts and sinuses, where it is accessible for nursing or milking. Results from oxytocin release.
A group of hormones secreted by the adrenal cortex that regulate the levels of some electrolytes in the body (sodium); principle hormone is aldosterone.
Nonsteroidal Antiinflammatory Drugs
Drugs not related to glucocorticoids that reduce pain and inflammation.
A hormone secreted by the adrenal medulla under stimulation of the sympathetic nervous system; produces part of the fight-or-flight response that results when the animal is threatened.
The female gonads; they produce the female reproductive cell, the ovum, as well as estrogen and progestin hormones.
One of the posterior pituitary hormones; it is produced in the hypothalamus and stored and released from the posterior pituitary gland. Stimulates contraction of the myometrium of the uterus at breeding and parturition and contraction of the myoepithelial cells of the lactating mammary gland.
Endocrine and exocrine gland that produces and secretes digestive enzymes into the intestine and produces hormones like inulin and glucagon.
The endocrine portion of the pancreas; composed of thousands of microscopic clumps of cells scattered throughout the organ. Also called the islets of Langerhans.
Endocrine glands consisting of several small nodules located in, on, or near the thyroid gland. They produce parathyroid hormone.
The hormone secreted by the parathyroid gland that prevents the level of calcium in the blood from getting too low; also called parathormone.
Abbreviation for parathyroid hormone; prevents hypocalcemia by increasing absorption in the GI tract, increasing retention in the kidney and removing from the "bone bank."
A structure in the brain located at the caudal end of the deep cleft that separates the two cerebral hemispheres, just rostral to the cerebellum. It produces the hormonelike substance melatonin that appears to influence the body's biological clock.
The master endocrine gland; a pea-sized endocrine gland located at the base of the brain. Made up of the anterior pituitary gland, which produces seven known hormones, and the posterior pituitary gland, which stores and releases two hormones from the hypothalamus.
A life-support system for a developing fetus; a multilayered, fluid-filled membranous sac that surrounds the fetus and links it to the blood supply of the uterus. It is an important endocrine organ.
Posterior Pituitary Gland
The neurohypophysis; the caudal portion of the pituitary gland that stores and releases two hormones (ADH and oxytocin) that are produced in the hypothalamus. Develops from nervous tissue.
The principle progestin hormone produced by the corpus luteum of the ovary; it helps prepare the uterus for implantation of the fertilized ovum and helps maintain pregnancy once it begins.
Hormones produced by the corpus luteum of the ovary necessary for the maintenance of pregnancy; the principle hormone is progesterone.
Hormonelike substances that are produced and exert many effects locally in a variety of body tissues. Sometimes called tissue hormones because they regulate biochemical activities in the tissues where they are formed.
A hormone produced in the lining of the duodenum when chyme enters from the stomach; it stimulates the pancreas to release a fluid rich in sodium bicarbonate to help neutralize the acidic chyme, inhibits gastric motility and delays gastric emptying.
Hormones that target the reproductive tissues; the male sex hormones are androgens and the female hormones are estrogens.
The production of the spermatozoa in the testes; stimulated by follicle stimulating hormone from the anterior pituitary.
The male gonads; they produce the male reproductive cells, spermatozoa, as well as androgen hormones.
The principle male sex hormone; responsible for development of the secondary sex characteristics such as muscling and libido. Has an overall anabolic effect.
Thyroxine; thyroid hormone that is largely converted to T3 before exerting an effect on target cells.
A hormonelike substance produced by the thymus along with thymosin; it influences the development of T lymphocytes.
A hormonelike substance produced by the thymus along with thymopoietin; it influences the development of T lymphocytes.
An organ that is important in the development of a young animal's immune system; it produces hormonelike substances such as thymopoietin and thymosin that influence development of T lymphocytes for cell-mediated immunity.
An endocrine gland made up of two parts located on either side of the larynx in the neck region; it produces thyroid hormone and calcitonin.
The collective name given to two hormones produced by the thyroid gland - T3 and T4. It helps an animal generate body heat; influences the metabolism of proteins, carbohydrates, and lipids; and encourages growth and development of the nervous and musculoskeletal systems in young animals.
The anterior pituitary hormone that stimulates the growth and development of the thyroid gland and causes it to produce its hormones.