49 results found

Search Results for: axon

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

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

Axon

Definition noun, plural: axons A long slender fibre of a neuron and is responsible for conducting nerve impulses away from... Read More

Afferent Nerve

Afferent Nerve Definition The word ‘aferent’ means "steering or conducting something towards a destination". The... 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 Human Nervous System

The nervous system is essentially a biological information highway, and is responsible for controlling all the biological... Read More

Hypothalamic hormone

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

Muscle

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

Dendrite

Definition noun, plural: dendrites (1) Any of the threadlike extensions or projections of the cytoplasm of a neuron;... Read More

Presynaptic membrane

presynaptic membrane That part of the plasma membrane of an axon terminal that faces the plasma membrane of the neuron or... Read More

Nervous tissue

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

Neuron

Definition noun, plural: neurons An excitable cell that has specialized cell parts (such as soma, dendrites and axons),... 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

Neurohormone

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

Vasopressin

Definition noun, plural: vasopressins An antidiuretic peptide hormone produced by the magnocellular and the parvocellular... Read More

Neuropodia

Definition (zoology) Plural form of neuropodium, the ventral lobe or branch of a parapodium (neuroanatomy) synaptic... Read More

Efferent neuron

Definition noun, plural: efferent neurons A neuron with an axon that carries nerve impulses peripherally, and innervates... Read More

Sensory neuron

Definition noun, plural: sensory neurons A type of neuron that transmits sensory nerve impulses Supplement The neurons are... Read More

Ganglion

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

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

Sulfatide

Definition noun, plural: sulfatides A cerebroside sulfuric ester containing one or more sulfate groups in the sugar portion... Read More

Telodendron

Definition noun, plural: telodendrons or telodendra Any of the terminal or smaller branches of an axon that terminates with... Read More

Oxytocin

Definition noun, plural: oxytocins An antidiuretic peptide hormone (chemical formula: C46H66N12O12S2) produced chiefly by... Read More

Myelin

Definition noun A substance comprised mainly of fatty material (about 80%) and proteins (about 20%), and forms the myelin... 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

Hillocks

Hillock in anatomy, any small elevation or prominence. axon hillock, the conical area of origin of the axon from the nerve... Read More

Unmyelinated neuron

Definition noun A neuron in which there is no myelin sheath surrounding the axon. Supplement The unmyelinated neuron... Read More

Fasciculus of Lissauer

Definition noun A small bundle of fibers situated longitudinally in the white matter, at the entrance of the dorsal root... Read More

Herring body

Definition noun, plural: Herring bodies The neurosecretory terminal of the axons from the hypothalamus and located in the... Read More

Tissue

Tissue Definition What is tissue in the body? The body tissue is an aggregation of cells that function together and have a... 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

Central nervous system

Definition noun The part of the nervous system comprised of the brain, the brainstem, and the spinal cord Supplement In... Read More

Hypothalamus

Definition noun, plural: hypothalami A small region of the forebrain comprised of several small nuclei, located between the... Read More

Myelinated neuron

Definition noun A neuron in which the axon is enveloped by a layer of Schwann cell membranes (sheath). Supplement The myelin... Read More

Interneuron

Definition noun, plural: interneurons (1) Any local circuit neuron of the central nervous system that relays impulses... Read More

Spongioplasm

Definition noun (1) The network or reticulum formed by the fibrils or granules thinly scattered in the cytoplasm. (2) The... Read More

Neurilemma

Neurilemma Neurolemma (also neurilemma and sheath of Schwann) is the outermost layer of nerve fibers in the peripheral... Read More

Argipressin

Definition noun, plural: argipressins A vasopressin that has an amino acid sequence:... Read More

Refractory Period

(neurology) the time after a neuron fires or a muscle fiber contracts during which a stimulus will not evoke a response.The... Read More