Search Results for: nerve impulse
Nerve impulse
Definition noun (1) The movement of action potential along a nerve fiber in response to a stimulus (such as touch, pain,... Read More
Afferent Nerve
Afferent Nerve Definition The word ‘aferent’ means "steering or conducting something towards a destination". The... Read More
Nervous tissue
Nervous Tissue Definition Nerve cells (or neurons) and their associated cells, such as neuroglia cells, make up nervous... 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
Decremental conduction
Definition noun The impaired conduction in a portion of a fiber due to progressively lessening response of the unexcited... Read More
Efferent nerve
Definition noun, plural: efferent nerves The type of nerve that carries nerve impulses away from the central nervous system... Read More
Axon hillock
Axon Hillock Definition What is axon hillock? If you are familiar with the different parts of the neuron, the axon hillock... Read More
Electrical synapse
Definition noun A form of synapse between two apposed neurons in which nerve impulse transmission is rapid and occurs by... Read More
Myocardium
Myocardium Definition What is the myocardium of the heart? It is the muscular middle layer of the heart that is... Read More
Efferent neuron
Definition noun, plural: efferent neurons A neuron with an axon that carries nerve impulses peripherally, and innervates... Read More
Action potential
Definition noun A short-term change in the electrical potential on the surface of a cell (e.g. a nerve cell or muscle 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
Olfactory nerve
Definition noun, plural: olfactory nerves The cranial nerve comprised of sensory nerve fibers that carry impulses for the... Read More
Sensory neuron
Definition noun, plural: sensory neurons A type of neuron that transmits sensory nerve impulses Supplement The neurons are... Read More
Tropomyosin
Definition noun A long protein strand composed of two fully alpha helical chains in a coiled-coil dimmer, and binds along... Read More
Afferent neuron
Definition noun, plural: afferent neurons A type of neuron that detects stimulus from the periphery and relays nerve... Read More
Hypothalamic theory
Definition noun A theory on emotion formulated by Walter Cannon in 1929 which states that the diencephalon, consisting of... Read More
Interneuron
Definition noun, plural: interneurons (1) Any local circuit neuron of the central nervous system that relays impulses... Read More
Nervous system
Definition noun The organ system responsible mainly for coordination of bodily reactions, organ monitoring, and information... Read More
Unmyelinated nerve
Definition noun A nerve that is bare or without the myelin sheath around the axon. Supplement The unmyelinated nerve... Read More
Sodium-potassium pump
Definition noun A transmembrane ATPase enzyme located in the plasma membrane of animal cells, and functions by pumping... Read More
Phosphorylation
Phosphorylation Definition We can define phosphorylation as a biochemical process in which a phosphate molecule is added to... Read More
Muscle cell
Definition noun, plural: muscle cells Any of the long, tubular mature contractile cells that make up the muscle... Read More
Muscle tone
Definition noun (1) The muscle in a steady partially contracted state caused by the successive flow of nerve... Read More
Muscle tonus
Definition noun (1) The muscle in a steady partially contracted state caused by the successive flow of nerve... Read More
Smooth endoplasmic reticulum
Smooth Endoplasmic Reticulum Definition Smooth endoplasmic reticulum (sER) is part of or a region in the endoplasmic... Read More
Nerve conduction
nerve conduction The transmission of an impulse along a nerve... Read More
Stimulation
Stimulation 1. The act of stimulating, or the state of being stimulated. 2. (Science: physiology) The irritating action of... Read More
Motor neuron
Definition noun, plural: motor neurons A type of neuron connected to a muscle fiber and originates from the central nervous... Read More
Circulation
Blood Blood is composed of a liquid, plasma, and blood cells such as erythrocytes (red blood cells,) leukocytes (white... Read More