88 results found

Search Results for: stimulation

Stimulation

Stimulation 1. The act of stimulating, or the state of being stimulated. 2. (Science: physiology) The irritating action of... Read More

Feedback mechanism

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

Actions of Caffeine in the Brain with Special Reference to Factors That Contribute to Its Widespread Use

IV. Actions of Caffeine on Brain Functions and Behavior Having discussed the molecular and neuronal actions of caffeine,... Read More

Sensory Systems

A sensory system is a part of the nervous system consisting of sensory receptors that receive stimuli from the internal and... 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

Stimulator

stimulator --> stimulant 1. Producing stimulation, especially producing stimulation by causing tension on muscle fibre... Read More

Ejaculation

Definition noun (biology) The act of ejecting or expulsion, as of the expulsion of semen from the male genital tract in... Read More

Parthenogenesis

To reproduce, by definition, means to produce new offspring. The process is referred to as reproduction, which is one of the... Read More

Taxis

Definition noun, plural: taxes A behavioral response of a cell or an organism to an external stimulus, which may either be... Read More

Involuntary muscle

A muscle act typically either under the control of the will or without conscious control. Muscles that can be controlled at... Read More

Kinesis

Definition noun, plural: kineses A behavioral response of a cell or an organism to a stimulus but not directionally oriented... Read More

Rheotaxis

Definition noun A form of taxis characterized by the directional movement of an organism in response to a current of water... Read More

Totipotent cell

Definition noun The cell that is capable of developing into any cell type. Supplement In a developing embryo, totipotent... Read More

Tropism

Definition noun, plural: tropisms A movement or growth response of a cell or an organism to a stimulus, which may either be... Read More

Autocrine signaling

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

Gravitaxis

Definition noun A form of taxis characterized by the directional movement of an organism in response to... Read More

Nematocyst

All organisms are composed of millions of cells. Many cells serve specific purposes and are specialized to do distinct... Read More

Neurophysiology

Definition noun A branch of neuroscience that is concerned with the physiology of the nervous system Supplement Neuroscience... Read More

Axon terminal

An axon terminal is any of the button-like endings of axons through which axons make synaptic contacts with other nerve... Read More

Microelectrode

Definition noun, plural: microelectrodes An electrode with a tip having dimensions of the order of one micrometer, thereby... Read More

Phototaxis

Definition noun A form of taxis characterized by the directional movement of an organism in response to... Read More

Receptor

receptor 1. A molecular structure within a cell or on the surface characterised by selective binding of a specific substance... Read More

Human Reproduction

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

Magnetotaxis

Definition noun A form of taxis characterized by a directional movement of an organism in response to a magnetic... Read More

Muscle

Muscle cells are specialized to generate force and movement. There are three types of muscle tissue: (1) skeletal muscle,... Read More

Pioneer species

You might have come across news of some barren lands turning into luscious grasslands or forests after decades? Or you might... Read More

Growth and Plant Hormones

Growth All living organisms begin in the same form: as a single cell. That cell will divide and the resulting cells will... Read More

Thermotaxis

Definition noun A form of taxis characterized by the directional movement of an organism in response to... Read More

Beta-blocker

Definition noun, plural: beta-blockers A drug that blocks the action of endogenous catecholamines on beta-adrenergic... Read More

Consciousness and Behavior

States of Consciousness Defined either by (1) behavior - ranging from attentive and alert to coma and (2) electrical... 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

Penis erection of the

penis, erection of the When the penis fills with blood and is rigid. The penis contains two chambers, called the corpora... Read More

Pupillary light reflex

Definition noun, plural: pupillary light reflexes A reflex marked by the constriction of the pupil in response to the... Read More

Exteroceptors

exteroceptor One of the peripheral end organs of the afferent nerves in the skin or mucous membrane, which respond to... Read More

Positive feedback

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

Testosterone

Definition noun, plural: testosterones A steroid hormone with a chemical formula of C19H28O2, and is regarded as the primary... Read More

Abdominal reflex

Definition noun, plural: abdominal reflexes Abdominal wall muscle contraction of the umbilicus toward the abdominal quadrant... Read More

GERL

GERL Definition GERL is the acronym for Golgi - Endoplasmic Reticulum - Lysosome complex, a system found in the cell and... Read More

Adenosine monophosphate

Definition noun plural: adenosine monophosphates (biochemistry) A nucleotide composed of adenine, ribose and a phosphate... Read More