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Nerve in Biological Dictionary

Ventral root

... Ventral root . The formation of the spinal nerve from the dorsal and ventral roots ... ... ... ventral root The part of a spinal nerve that leaves ... Psychology research, ... or motor root consists of the motor or efferent nerve fibers whose ... Dorsal root . The formation ...

Ulna

... with the radius. In human anatomy, the ulnar nerve is a nerve which runs near the ulna bone. The ulnar nerve is the largest ...

Spinal nerve

... The term spinal nerve generally refers to the mixed spinal nerve , which is formed from the dorsal and ventral ... that come out of the spinal cord. The spinal nerve is the bit that passes out of the vertebrae ...

Sciatic nerve

... The sciatic nerve is a large nerve that starts in the lower back and runs through ... lower limb. It is the longest and widest single nerve in the body. User-created article on ....

Reflex arc

... arc list the direction and the stages of the nerve ... reflex ( ) adj. Bent, turned, or thrown ... arc list the direction and the stages of the nerve ... The Reflex Arc . How a Stimulus Elicits ... arc refers to the neural pathway that a nerve impulse follows. ... It is the simplest reflex ...

Radial canal

... the radial canal is a the V-shaped radial nerve that controls the movement ... An ambulacrum ... that contains the radial canal and radial nerve ... An orifice used as a measuring device is a ... ... consisting of a radial canal , a giant nerve axon ... ( G) Lip flaring evoked by a shock ...

Pacinian corpuscles

... the four major types of mechanoreceptor. They are nerve endings in the skin, responsible for sensitivity ... Pacinian corpuscle - a specialized bulblike nerve ending located in the ... Definition of ... corpuscles , located deeper in dermis, are simple nerve endings but are ... Pacinian corpuscles ...

Optic nerve

... The optic nerve , also called cranial nerve II, transmits visual information from the retina to the brain. Optic nerve hypoplasia is a medical condition that results ...

Olfactory nerve

... The olfactory nerve , or cranial nerve I, is the first of twelve cranial nerves. The ... olfactory receptor neurons of the olfactory nerve are located in the olfactory mucosa of the ...

Neurotransmitter

... such as acetylcholine or dopamine, that transmits nerve impulses across a ... The neurotransmitter ... in 1742, that electrical stimulation of the nerve to the muscle of a frog's leg caused the ... Neurotransmitter , chemical made by neurons, or nerve cells. ... Neurotransmitter - Wikipedia, the ...

Nerves

... A nerve is an enclosed, cable-like bundle of peripheral axons . A nerve provides a common pathway for the electrochemical nerve impulses that are transmitted along each of the ...

Nerve impulse

... (Redirected from nerve impulse ) Jump to: navigation, search. Figure 1. A. ... An action potential (or nerve impulse ) is a transient alteration of the ... Aspects of the topic nerve - impulse are discussed in the following places ...

Nerve chord

... nerve , chord ,biological,biology dictionary,biology ... abbreviations ... rather than a ventral, nerve chord ... Full article > ... ... ... Audio Archive > Filament Recordings > nerve Chord . Listen to audio. Stream (help) VBR M3U ...

Nerve roots

... A nerve root is the initial segment of a nerve leaving the central nervous system. ... A cranial nerve root , the beginning of one of the eleven ...

Myelin sheath

... envelope of myelin that surrounds the core of a nerve fiber or axon and facilitates the transmission of nerve impulses myelin also myeline ( ) n. A white ... navigation. Medical Encyclopedia. Myelin and nerve structure. Myelin is the layer that forms ...

Myelin

... and lipoproteins, that encloses certain axons and nerve fibers myelin sheath n. The insulating envelope of myelin that surrounds the core of a nerve fiber or axon and facilitates the transmission of nerve impulses The Myelin Repair Foundation is an ...

Humerus

... bone) ... This is the so called "funny bone" - a nerve and not the humerus . Funny, huh? ... The ... humerus . ... Surgical Treatment of the Radial nerve Lesions Associated w/ Frx of the Humerus . ... ... care setting and make ... Rarely, vascular or nerve injuries are associated with humerus fractures. ...

Haversian canal

... Haversian canals surround blood vessels and nerve cells throughout the bone ... The osteon, or ... generally contains one or two capillaries and nerve fibres. ... The Haversian canal is from 20 ... center contains the blood vessel, with associated nerve and CT. ... A Volkmann's canal is shown at (b), ...

Brachial

... ... The brachial plexus is an arrangement of nerve fibers, running from the spine, formed by the ... rami of the lower cervical and upper thoracic nerve root, specifically from below the fifth cervical ... BACKGROUND The brachial plexus is a network of nerve fusions ... Burners (stingers): Acute brachial ...

Axon

... An axon or nerve fiber is a long, slender projection of a nerve cell, or neuron, that conducts electrical ... also axone ( ) n. The usually long process of a nerve fiber that generally conducts impulses away from ...

Spinal cord

... or other causes. ... spinal cord n. The thick, whitish cord of nerve tissue that extends from the medulla oblongata down through the ... cord is the main pathway for information connecting the brain and ... The nerve fibers enter the spinal cord through the dorsal root. ... Learn ...

Scapula

... on the front part of the ... Dr. Rahul Nath is director of the Texas nerve Institute in the Texas Medical Center specializing in winging scapula , serratus anterior and long thoracic nerve Scapula - Definition of Scapula at Dictionary.com a free online ...

Notochord

... highest phylum in the animal kingdom, characterized by a notochord , nerve cord, and gill slits; includes the Among vertebrates, while the ... Skeletal structure in ALL chordate embryos ... No trace of notochord , nerve cord or tail (but there are pharyngeal slits) ... ...

Nervous system

... are branches of the ... Nervous . Nervous System . Facial Nerves. nerve Cells. Nasal Passages. Tongue ... The nervous system integrates ... Central Nervous System which has has the responsibility for issuing nerve ... The peripheral nervous system is made up of all of the ...

Masseter

... of maxilla ... Elevates mandible (enables forced closure of mouth) nerve ... What is masseter ? Meaning of masseter medical term. What does masseter mean? ... The masseter is innervated by the masseteric nerve from the mandibular division ... Al-Muharraqi MA, Fedorowicz Z, Al ...

Effector cell

... gland, or organ capable of responding to a stimulus, especially a nerve impulse ... Effector cell , a type of lymphocyte in immunology ... ... dictionary,biology terminology,biology terms,biology abbreviations ... nerve cells connected to a muscle or gland. Sometimes ... Effector CD4. ...

Dehiscent

... free online English dictionary and ... This aberrant dehiscent facial nerve was discovered during a routine tympanoplasty. ... dehiscent (of e.g. ... term. What does dehiscent mean? ... This aberrant dehiscent facial nerve was discovered during a routine ... dehiscent . ... Dehiscent (a. ......

Chordate

... having, at some time in their life cycle, a notochord, a hollow dorsal nerve ... Chordates . Fossil range: Latest Ediacaran - Recent. ... their name from one of their synapomorphies, or derived ... The chordate nerve cord is hollow, with pairs of nerves branching from it at ... Image: ...

Chordates

... having, at some time in their life cycle, a notochord, a hollow dorsal nerve ... Chordates are well represented in marine, freshwater and ... to the phylum Chordata, having at some stage of development a dorsal nerve cord, a notochord, and gill The Chordata is the animal phylum with ...

Chemoreceptors

... carotid arteries and aortic arch, ... chemoreceptor n. A sensory nerve cell or sense organ, as of smell or taste, that responds to chemical ... Guide: What Are Chemoreceptors ? ... Chemoreceptors are specialized nerve cells which are designed to respond to chemical stimuli. ... ...

Cell body

... and dendrites, forming a functional unit ... Cell body : part of the nerve cell between the axon and the dendrite. ... In this study we ... Warfare, Biology, Biome, Biophysics, Biosphere, Biotechnology, Birds, ... nerve cells consist of a cell body and long attachments, called axons, ...

Autonomic nervous system

... is divided into three elements which act together, ... autonomic nerve cells are situated in the central nervous system . ... ... of the ... nervous system are motor channels, and their ... Autonomic nerve fibers exit from the central nervous system as part of other ... ...

Vestibular system

... System . Genetic Analysis ... The eyes, the muscles and joints, and the vestibular organs of the inner ear send information in the form of nerve ... Input from the vestibular system ... VESTIBULAR SYSTEM . The vestibular apparatus is the nonauditory portion of the inner ear. ... ...

Vessel cell

... the material ... ... into specific cell types such as neurons and blood vessel cells, but they were ... than a year, creating large numbers of nerve and blood vessel cell precursors. ... It is believed that stem cells have the potential to be any cell in the body. ... cells become ...

Triceps muscle

... or tendon. ... The triceps and anconues muscles main function is to extend the forearm. ... The triceps muscle is suppled by the radial nerve (C6, C7 and C8) which is a ... The triceps muscles are used primarily for elbow extension. ... triceps with tips from a fitness director ...

Transmembrane receptor

... or Transmembrane receptors are specialized integral membrane proteins ... receptor n. Physiology. A specialized cell or group of nerve endings ... Transmembrane receptor :E=extracellular space; I=intracellular space; P=plasma membrane ... The European ... IPR004766 ...

Synapse

... System™ introduces groundbreaking ... ©2008 Synapse Biomedical Inc. • Contact Us • Login ... synapse ( ) n. The junction across which a nerve impulse passes from an axon terminal to a neuron, muscle cell, or gland cell SYNAPSE is a one-day regional undergraduate neuroscience ...

Strain

... Definition of strain from Webster's New World College Dictionary. Meaning of strain . ... to exert, use, or tax to the utmost to strain every nerve ... Strain includes the dilation and distortion components of deformation. ... Approximately homogeneous strain ... Highly heterogeneous ...

Skeletal muscle

... You already know quite a bit about skeletal muscle from a lifetime of experience. ... In fact, skeletal muscle is totally dependent on its nerve supply for ... ... 3 different types of muscle : skeletal , cardiac and smooth. ... Nestin-GFP reporter expression defines the quiescent state ...

Sensory neurons

... sensory neurons are activated by physical modalities such as light, sound, temperature, ... A neuron OOR-on, also known as a neurone or nerve cell) is an excitable cell in the nervous system that processes and transmits information by electrochemical signalling. Neurons are the core ...
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