32 results found

Search Results for: endocrine gland

Endocrine gland

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

Pituitary gland

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

Hormone

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

Pineal gland

Definition noun, plural: pineal glands A small endocrine gland shaped like a pinecone, located in the epithalamus, and... Read More

Hormone Production

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

Insulin

Definition noun A polypeptide hormone secreted by the beta cells of the islets of Langerhans of the pancreas to regulate the... Read More

Melatonin

Definition noun, plural: melatonin or melatonins The hormone involved in the regulation of several physiological mechanisms... Read More

Lactotroph

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

Corticotroph

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

Animal Growth Hormones

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

Thyrotroph

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

Hypothalamic hormone

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

Pinealocyte

Definition noun, plural: pinealocytes The major cell type component of the pineal gland, and is involved in the production... Read More

Somatotroph

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

Movement of Molecules Across Cell Membranes

Diffusion Diffusion is essentially the movement of molecules from a region of higher concentration to a region of lower... Read More

System

A system pertains to interdependent or interrelated objects comprising and functioning as a whole. In biology, it may refer... Read More

Exocrine glands

Exocrine gland (Science: anatomy) a gland that secretes its products through ducts or canals, such as sweatglands or mammary... 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

Epidermis

Epidermis Definition What is the epidermis? We can define the epidermis as one or more layers of cells forming the tough... 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

Digestion and Absorption of Food

The gastrointestinal (GI) system includes the gastrointestinal tract (mouth, pharynx, esophagus, stomach, small intestine,... Read More

Secretion

Definition noun, plural: secretions (1) The physiological process of synthesizing and eventually releasing substances from... Read More

Growth hormone

Definition noun, plural: growth hormones A polypeptide hormone that in humans and other animals essentially promotes... Read More

Neurohormone

Definition noun, plural: neurohormones Any of the various hormones secreted by neuroendocrine cells Supplement A... Read More

Prolactin

Definition noun, plural: prolactins A peptide hormone secreted by lactotropic cell in the anterior pituitary of vertebrates,... Read More

Neural Control Mechanisms

Nerve cells called neurons generate electric signals that pass from one end of the cell to another and release chemical... Read More

Human

Definition noun plural: humans hu‧man, (h)yo͞omʹn A bipedal primate belonging to the genus Homo, especially Homo... Read More