Search Results for: medulla
Renal medulla
Definition noun, plural: renal medullae or renal medullas The inner region of the kidney that is arranged into renal... Read More
Medulla oblongata
medulla oblongata The lowest subdivision of the brainstem, immediately adjacent to the spinal cord. Houses important cardiac... Read More
Nervous System
THE is the most complicated and highly organized of the various systems which make up the human body. It is the... 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
Medullary chemoreceptor trigger zone
Medullary chemoreceptor trigger zone (CTZ) (anatomy and physiology) It is located in the Medulla (i.e. Part of the brain)... Read More
Renal column
Definition noun, plural: renal columns A column-like extension of the renal cortex in the renal medulla Supplement A... Read More
Lymph nodes
Lymph nodes definition Lymph nodes are small, bean-shaped organs located in different parts of the body and act as... Read More
Renal cortex
Definition noun, plural: renal cortexes or renal cortices The outer region of the kidney where the glomeruli, the proximal... Read More
Renal pyramid
Definition noun, plural: renal pyramids A conical mass of tissues as seen on longitudinal section of the kidney and... Read More
Kidneys and Regulation of Water and Inorganic Ions
Renal Functions Kidneys remove/add substances from/to the plasma. Regulate water concentration, inorganic ion... Read More
Adrenaline
A catecholamine secreted by the adrenal medulla in response to stress (trade name Adrenalin); stimulates autonomic nerve... Read More
Digestion and Absorption of Food
The gastrointestinal (GI) system includes the gastrointestinal tract (mouth, pharynx, esophagus, stomach, small intestine,... Read More
Respiration
Organization of the Respiratory System Each lung is composed of air sacs called alveoli - the sites of gas exchange with... 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
Hormone Production
Reviewed by: Mary Anne Clark, Ph.D. Hormones are chemical messengers produced by glands in the endocrine system.... Read More
Parenchyma
Parenchyma Definition What does parenchyma mean? Let's define the word "parenchyma". Most of the functional tissues in... 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
The Conscious & Unconscious Nervous System
The Central Nervous System is arguably the most important part of the body because of the way it controls the biological... Read More
Regulation of Organic Metabolism, Growth and Energy Balance
Organic Metabolism Events of Absorptive and Post-absorptive States. The absorptive state is the period during which... Read More
Circulation
Blood Blood is composed of a liquid, plasma, and blood cells such as erythrocytes (red blood cells,) leukocytes (white... Read More
Vital knot
vital knot --> noeud vital A circumscript region in the lower part of the medulla oblongata, near the apex of the calamus... Read More
Vallecula cerebelli
vallecula cerebelli A deep hollow on the inferior surface of the cerebellum, between the hemispheres, containing the medulla... Read More
Chromaffin cell
Definition noun, plural: chromaffin cells Any of the cells (mostly found) in adrenal medulla and in other ganglia of the... Read More
Peristalsis
What is Peristalsis? Peristalsis is the series of involuntary, wave-like muscle movements in the cylindrical, hollow tube... Read More
Neurohormone
Definition noun, plural: neurohormones Any of the various hormones secreted by neuroendocrine cells Supplement A... Read More
Foramen magnum
Definition noun A large opening in the anterior inferior portion of occipital bone in the cranium that serves an outlet of... Read More