53 results found

Search Results for: pituitary gland

Pituitary gland

Definition noun, plural: pituitary glands An endocrine gland situated off the bottom of the hypothalamus, and acts as the... Read More

Apocrine gland

The human body is a complex assemblage of many different organs, systems, glands, bones, and tissues. Weighing any one over... Read More

Hormone Production

Reviewed by: Mary Anne Clark, Ph.D. Hormones are chemical messengers produced by glands in the endocrine system.... Read More

Principles of Hormonal Control Systems

Hormones are chemical messengers that enter the blood directly upon their secretion from endocrine glands. A single gland or... Read More

Follicle-stimulating hormone

Follicle Stimulating Hormone Definition In the pituitary gland of the brain, gonadotropic hormones are released.... Read More

Herring body

Definition noun, plural: Herring bodies The neurosecretory terminal of the axons from the hypothalamus and located in the... Read More

Somatotroph

Definition noun, plural: somatotrophs The hormone-secreting cell in the anterior pituitary that particularly releases... Read More

Hypothalamic hormone

Definition noun, plural: hypothalamic hormones Any of the various neurohormones produced by specialized neurons in the... Read More

Pituicyte

Definition noun, plural: pituicytes A specialized glial cell in the neurohypophysis that resembles an astrocyte and plays a... Read More

Corticotroph

Definition noun, plural: corticototrophs The cell in the anterior pituitary that particularly releases adrenocorticotropic... Read More

Lactotroph

Definition noun, plural: lactotrophs An acidophilic cell in the anterior pituitary that releases prolactin Supplement The... Read More

Animal Growth Hormones

Reviewed by: Mary Anne Clark, Ph.D. As mentioned in the previous tutorial, hormones are produced in... Read More

Positive feedback

Positive Feedback Definition Each mechanism of the body like temperature, blood pressure, and levels of specific nutrients... Read More

Endocrine gland

Definition noun, plural: endocrine glands Any of the ductless glands secreting hormones that are released directly into... Read More

Thyrotroph

Definition noun, plural: thyrotrophs The cell in the anterior pituitary that particularly releases thyroid-stimulating... Read More

Vasopressin

Definition noun, plural: vasopressins An antidiuretic peptide hormone produced by the magnocellular and the parvocellular... Read More

Melanocyte-stimulating hormone

Definition noun, plural: melanocyte-stimulating hormones A peptide hormone in vertebrates that primarily regulate melanin... Read More

Hormone

Definition noun, plural: hormones (physiology) Any of the substances produced and secreted by an endocrine gland, and then... Read More

Hypophysis

Definition noun, plural: hypophyses (zoology) The pituitary gland (botany) The topmost cell of the suspensor that forms... Read More

An introduction to Homeostasis

Researched and Written by Jonjo Minns Submitted to biologyonline.com on February 25, 2009. Published in biologyonline.com... Read More

Endocrine system

Definition noun The bodily system consists of the endocrine glands, and is responsible for the production and secretion of... Read More

Homeostasis of Organism Water Regulation

Osmoregulation Osmoregulation is the regulation of water concentrations in the bloodstream, effectively controlling the... Read More

Hypothalamus

Definition noun, plural: hypothalami A small region of the forebrain comprised of several small nuclei, located between the... Read More

Thyroxine

Definition noun, plural: thyroxines An iodine-containing hormone (chemical formula: C15H11I4NO4) produced by the thyroid... Read More

Lipotropin

Definition noun, plural: lipotropins A polypeptide hormone of the anterior pituitary gland, presumably acts by promoting fat... Read More

Argipressin

Definition noun, plural: argipressins A vasopressin that has an amino acid sequence:... Read More

Feedback mechanism

Feedback Mechanism Definition What is a feedback mechanism? A feedback mechanism is a physiological regulation system in a... Read More

Spermatogenesis

Spermatogenesis Definition Spermatogenesis is the biological process of producing sperm cells. It occurs in the male gonad... Read More

Hyperosmotic

Hyperosmotic Definition What is hyperosmotic? The word hyperosmotic is derived from two Greek words: 'hyper', meaning... Read More

Lorain-levi dwarfism

Lorain-levi dwarfism --> pituitary dwarfism short stature due to underpreformance of the pituitary gland (specifically of... Read More

Dopamine

Definition noun, plural: dopamines 3,4-dihydroxyphenethylamine (chemical formula: C8H11NO2); a neurotransmitter or a hormone... Read More

Diabetes

Diabetes Definition Diabetes is a metabolic disorder characterized by excessive urine excretion (polyuria) and persistent... Read More

Prolactin-releasing hormone

Definition noun, plural: prolactin-releasing hormones A polypeptide hormone originating in the hypothalamus, and whose... Read More

Acromegaly

Acromegaly (Science: endocrinology) a condition that results from the excess production of growth hormone in the anterior... Read More

Control of Growth & Development

Control of Growth & Development tutorials look at how the genetic makeup determines the biological processes on a day to... Read More

Human Reproduction

Terminology and Concepts Primary reproductive organs are called gonads - testes in the male and ovaries in the female.... Read More

Corticosteroid

Definition noun, plural: corticosteroids A steroid hormone produced by the adrenal cortex, e.g. glucocorticoids and... Read More

Mineralocorticoid

Definition noun, plural: mineralocorticoids Any of a group of corticosteroids produced by the adrenal cortex that act on the... Read More

Autocrine signaling

Autocrine Signaling Definition What is autocrine signaling? Autocrine signaling is a type of cell signaling wherein a cell... Read More

Homeostasis

Homeostasis is the tendency not to stray from the range of favorable or ideal internal conditions. Such conditions must be... Read More