Essays Tagged: "Axon"

Learning from Data

l neurons have the same principal parts. These parts are:? the cell body (soma)? the dendrites? the axon.[insert Fig. 2.1]What are the functions of the soma the dendrites and the synapses?What are the ... alue, the cell body produces a short electric spike. This electric spike is transmitted through the axon which is a nerve fibre ranging from few millimeters to several meters in length. The axon branc ...

(42 pages) 1282 0 4.3 Mar/2002

Subjects: Science Essays > Computer Science > Artificial Intelligence

Life-span development chap 5 notes

proximodistal growth pattern) Neuron movement from neat the center of the brain* cell elaboration - axon and dendrites grow from connections with other cells, continues years after birth, during infan ... r(a) made up of cell bodies of nerve cells(b) "white" matter beneath cortex is formed by myelinated axons(2) Contains three-fourths of all cells in the brain(3) Divided into four regions(a) Occipital ...

(3 pages) 108 0 4.3 Sep/2002

Subjects: Social Science Essays > Psychology

The aetiology, current and potential treatments of multiple sclerosis

lin is responsible for facilitating the smooth and high-speed transmission of the impulse along the axon, electrochemical messaging between the brain, spinal cord, and indeed the rest of the body will ... the myelin broken down from the sheaths. The degree of inflammation is dependant upon the extent of axonal loss. This will be dealt with in more detail in the Aetiology section of this project.Chronic ...

(28 pages) 155 1 4.8 Feb/2003

Subjects: Humanities Essays > Health & Medicine > Diseases

The nervous system and its bodily functions.

tanding the nervous system. Neurons The neuron has two important structures called the dendrite and axon, also called nerve fibers. The dendrites are like tentacles that sprout from the cell and the a ... axon is one long extension of the cell. The dendrites receive signals from other neurons, while the axon sends impulses to other neurons. Axons can extend to more than a meter long. Average sized neur ...

(8 pages) 207 0 4.7 Mar/2003

Subjects: Science Essays > Biology > Human Biology


s of muscleSmoothSkeletal or striatedCardiacPrecise movements: few muscle fibers innervated by each axonNeuromuscular junctionAcetylcholineMuscle contractionAntagonistic musclesFlexorExtensorMyastheni ... id series of movementsConnections from the brain to the spinal cordDorsolateral tract of spinal cordAxons from primary motor cortex and surrounding areas and from red nucleus of midbrainDirect connect ...

(3 pages) 69 0 3.0 Mar/2003

Subjects: Science Essays > Biology > Human Biology

Dementia and Alzheimer's Disease, including care, nursing diagnosis, signs and symptoms.

ase in acetylcholine which is a neurotransmitter that is used to carry electrical impulses from the axon of one cell to the dendrite of another. The number of neurotransmitters have been found in the ...

(3 pages) 296 2 3.9 Apr/2003

Subjects: Humanities Essays > Health & Medicine > Diseases

How neurones communicate with each other.

- Neil R. Carlson - the neurone is comprised of four main structures; the soma, the dendrites, the axon and the terminal buttons. The soma (cell body) contains the nucleus, whose shape varies accord ... these messages are transmitted across the synapse - "the junction between the terminal button of an axon and the membrane of another neuron"#. The axon "carries information from the cell body to the ...

(10 pages) 148 1 4.0 May/2003

Subjects: Humanities Essays > Health & Medicine

Multiple Sclerosis: Changes Beyond Demyelination.

sis (MS) is an autoimmune disease characterized by destruction of the myelin sheath surrounding the axons of the central nervous system. The damaged oligodendrocytes which generate myelin cannot be re ... curs, which results in an interruption of the salutatory conduction of an action potential down the axon. This slower conduction velocity results in weakness and lack of coordination in the individual ...

(1 pages) 51 1 3.0 Sep/2003

Subjects: Humanities Essays > Health & Medicine

What role do Glia cells play in the neural functioning?

rites, organs that receive the information from another cell and transmit message to the cell body. Axon is a long slender tube wrapped in a myelin sheath produced by support cells, (Glia cells - Schw ... by constriction called node of Ranvier. And finally the Terminal buttons situated at the end of the Axon branch, they secret a chemical substance called neurotransmitter and these substance travel to ...

(5 pages) 71 1 4.7 Nov/2003

Subjects: Science Essays > Biology > Human Biology

The Brain

the long itudinal fissure. Communication between the two is through several concentrated bundles of axons, called comissures, the largest of which is the corpus callosum.Overoall the main purpose of t ...

(1 pages) 33 0 4.3 Mar/2004

Subjects: Science Essays > Biology > Human Biology


called a soma. Protruding from the soma are many nerve fibers. There are two kinds of nerve fibers, axons and dendrites. Axons are very long nerve fibers which send electro-chemical messages to other ... ction in them. Dendrites are short nerve fibers which receive electro-chemical information from the axon of other nerve cells. A typical nerve cell has several dendrites, but only one axon. When neuro ...

(8 pages) 221 3 5.0 Feb/2005

Subjects: Science Essays > Biology > Human Biology

The Building Blocks of Biology

his problem, but only to a certain degree. A neuron, you may know, has a long extension known as an axon. Neurons have developed two different means of active transportation in order to bring molecule ... nt means of active transportation in order to bring molecules from the cell body to the ends of the axons. In cell culture most non-neoplastic cells only grow to a certain point due to a phenomenon kn ...

(5 pages) 32 0 4.0 Apr/2005

Subjects: Science Essays > Biology

Overview of Brain - Psychology Notes

distinct parts:cell body (soma) - can be the site of input, mainly inhibitorydendrites - input zoneaxon - output pathwayNeurons are connected together in particular ways to form functional circuits, ... so sensory signals for touch, temperature, pain etc (somatosensory signals)cord consists largely of axons conducting information from sensory cells to the brain, and information from the brain to moto ...

(4 pages) 83 0 3.0 Jul/2005

Subjects: Social Science Essays > Psychology

Hippocrates vs. Neuroscience: A comparison between Hippocrates' theory of four humors and todays knowledge of neuroscience.

changes in mood and behavior depend on the kind and strength of an action potential sent through an axon.Apparently, Hippocrates had underestimated the power of the neurons. However we must not forget ...

(1 pages) 21 0 2.3 Apr/2006

Subjects: Social Science Essays > Psychology

Neuronal Functions

ther via "action potentials". Action potentials are electrical currents which run the length of the axon and signal the terminal boutons to release neurotransmitters. The structures inside the neurons ... ussed a little later. The stretch of cell between the soma and the terminal boutons is known as the axon. Axons are where the action potential occurs. Some axons are sheathed in myelin, which is compr ...

(7 pages) 54 0 5.0 Dec/2006

Subjects: Social Science Essays > Psychology


xtension from the cell body of a neuron that carries impulses from the environment to the cell body Axon- long fiber that carries impulses away from the cell body of a neuron Axon terminals- small swe ... es away from the cell body of a neuron Axon terminals- small swellings in a neuron at the end of an axon that makes connections with next neuron Myelin- substance composed of liplids and protein that ...

(4 pages) 19 0 1.0 Feb/2008

Subjects: Science Essays > Biology > Human Biology


in the cold dead soul of Adolf Hitler He was the man that ordered those who were not White axon to be killed, even though he himself was not White Anglo-Saxon. The scariest part of the whole ...

(4 pages) 19 0 0.0 Feb/2008

Subjects: History Term Papers > World History > World War II

Central nervous system (CNS) Perifial Nervous system (PNS)

The nervous system consists of neurons and axons. Neurons are responsible for receiving and transmitting electrochemical signals. Axons are lon ... yout efferent nerves (messages). The neuron sends an electrical message from its body by way of the axon. Each neuron has an axon (Pinel, 2008).The peripheral nervous system (PNS) and the central nerv ... tem (PNS) and the central nervous system (CNS) are similar because they both consist of neurons and axons. The differences lie in the anatomy of the neurons and axons. The CNS has sets of neurons call ...

(3 pages) 29 0 2.3 Nov/2008

Subjects: Science Essays > Mental Health

Understanding Neurons

do would be impossible without the work of a neuron.Within the Neuron there are several parts; the axon and the dendrite. The axon transmits messages from the cell, and resembles a long tail. Dendrit ... that takes the information in through the dendrites, processes it and then releases it through the axon to were the information needs to go.There are several types of neurons: The neuron that carries ...

(2 pages) 29 0 3.7 Feb/2009

Subjects: Social Science Essays > Psychology

Science- Biology Practical Reflex and Touch

her neurons.The effectores are the muscles in your arm. The messages travel to the muscle along the axon of a motor neurone. The muscle then contracts, so that your hand is pulled away.Reflex actions ...

(2 pages) 13 0 3.0 Mar/2009

Subjects: Science Essays > Biology