82 results found

Search Results for: homeostasis

Homeostasis

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

Physiological Homeostasis

In animals such as ourselves, the internal environment of our bodies must have certain conditions within tolerable limits to... Read More

Homeostasis of Organism Water Regulation

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

Sugar Homeostasis

Blood Sugar Regulation As described in Cell Biology tutorials, the body requires volumes of glucose in order to create ATP.... Read More

Ganglia

Ganglia Definition What are ganglia? To simply define ganglia in biology, it is the structure of an oval shape that... Read More

Stimulus

We can detect hot or cold environments using our sense of temperature. When the temperature is too hot, sweating... Read More

Hyperosmotic

Hyperosmotic Definition The word Hyperosmotic is derived from two Greek words: 'hyper', meaning “excess” and 'osmos',... Read More

Smooth endoplasmic reticulum

Smooth Endoplasmic Reticulum Definition Smooth endoplasmic reticulum (sER) is (a part of) endoplasmic reticulum that is... Read More

Biology

Biology Definition Biology is the branch of science that primarily deals with the structure, function, growth, evolution,... Read More

Regulation of Biological Systems

Regulation of Biological Systems tutorials are focused on the modulation of biological systems from cell to population... Read More

Epidermis

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

Feedback mechanism

Definition noun A loop system in which the system responds to perturbation either in the same direction (positive feedback)... Read More

Homeostatic equilibrium

Definition noun (1) The tendency of an organism or a cell to regulate its internal conditions, usually by a system of... Read More

The Human Physiology

Physiology is the study of how living organisms function. Thus, human physiology deals specifically with the physiological... Read More

Genetic Homeostasis

Pertaining to when the gene pool is expressing frequencies of alleles consistently the same over a period of... Read More

Eukaryote

Eukaryote refers to any of the single-celled or multicellular organisms whose cell contains a distinct, membrane-bound... Read More

Plasma membrane

Do all cells have a plasma (or cell) membrane? Yes, all cells have a biological membrane that separates the protoplasm from... Read More

Life

Life Definition noun, plural: lives (1) A distinctive characteristic of a living organism from dead organism or non-living... Read More

Neuroglia

Definition noun, plural: neuroglia A cell that surrounds a nerve cell that is responsible for providing mechanical and... Read More

Integumentary system

Definition noun The organ system consisting of the skin and associated structures such as the glands, hair, nails, scales,... Read More

Amphipathic

Amphipathic is a word used to describe a chemical compound containing both polar (water-soluble) and nonpolar (not... Read More

Milieu interieur

Definition noun (1) Literally means: the environment within. (2) The outside of the cells inside the body of an organism,... Read More

Negative feedback

Definition noun (1) A feedback in which the system responds to the perturbation in the opposite direction as the... Read More

Autophagy

Definition noun A programmed cell death characterized by biochemical events leading to self-digestion through the... Read More

Selective permeability

Definition noun A feature and a function of the plasma membrane that is essential to maintain homeostasis by regulating the... Read More

Extracellular fluid

Definition noun The body fluid outside the cell composed of blood plasma, interstitial fluid, lymph and transcellular... Read More

Transcellular fluid

Definition noun A bodily fluid found in chambers created by the linings of epithelial cells Supplement The extracellular... Read More

Internal environment

Definition noun (1) The outside of the cells inside the body of an organism. (2) The extracellular fluid... Read More

The Water Cycle

The water cycle (sometimes referred to as the hydrological cycle) is the continuous transfer of water from air, sea land and... Read More

Plant Water Regulation

A plant requires water as an essential ingredient of photolysis, the photochemical stage of photosynthesis where water is... Read More

Non-living thing

A non-living thing in biology means any form without life, such as an inanimate body or object. Compared with the entity... Read More

Plant Biology

Plantlife can be studied at a variety of levels, from the molecular, genetic and biochemical level through organelles,... Read More

Developmental Biology

Developmental biology is a biological science that is primarily concerned with how a living thing grows and attains... Read More

Simple diffusion

Simple Diffusion Definition What is simple diffusion? In biology, simple diffusion is a form of diffusion that does not... Read More

Nervous tissue

Definition noun A type of animal tissue comprised principally of nerve cells and neuroglia cells Supplement The four... Read More

Endomembrane system

Ever wondered how biomolecules are made within the cell and then they are released outside the cell for use by the body?... Read More

Biome

Biome Definition What are biomes? There is no universal definition of biomes. But biome definition in biology of different... Read More

Simple squamous epithelium

Simple Squamous Epithelium Definition Simple squamous epithelium, also known as simple squamous epithelial tissue or... Read More