Tuesday, February 28, 2012

The Nervous System 2

What are the basic functioning units of the nervous system called? 


What are dendrites? 


What are axons ?




Hint : Page 119 text book 

48 comments:

Dalebourqueissmart said...

Thin fibers that branch out from the cell body of a nerve.
An axon (also known as a nerve fiber) is a long, slender projection of a nerve cell

gail(: said...

The basic functioning units of the nervous system are nerve cells and neurons. Dendrites and axons are part of what makes up a nerve cell.

Maddie Corbett(: said...

The basic functioning of the nervous system are nerve cells and neurons. Dendrites receive messages from other neurons and send them to the cell body. Axons carry messages away from the cell body.

joshua t said...

What are the basic functioning units of the nervous system called?


What are dendrites?
a specialized cell transmitting nerve impulses; a nerve cell.

What are axons ?
the long threadlike part of a nerve cell along which impulses are conducted from the cell body to other cells.

Christopher N. said...

axons are the long threadlike part of a nerve cell along which impulses are conducted from the cell body to other cells.
dendrites are a short branched extension of a nerve cell, along which impulses received from other cells at synapses are transmitted to the cell body.

Rea,Cheyenne(: said...

The basic functioning units of the nervous system are nerve cells and neurons. Dendrites and axons are part of what makes up a nerve cell.
Axos carry messages away from the cell body

nathan said...

What are the basic functioning units of the nervous system called? What are dendrites?a specialized cell transmitting nerve impulses; a nerve cell.
What are axons ?
the long threadlike part of a nerve cell along which impulses are conducted from the cell body to other cells.

Sammy P said...

Dendrites are branches on a cell body. Dendrites receive messages from other neurons. Axons carry messages away from the cell body.

Lauryn F said...

What are dendrites? are a short branched extension of a nerve cell, along which impulses received from other cells at synapses are transmitted to the cell body.

What are axons ? are the long threadlike part of a nerve cell along which impulses are conducted from the cell.

Sarah M said...

The basic functioning units of the nervous system are nerve cells and neurons. Dendrites receive messages from neurons and send them to the cell body. Axons carry messages away from the cell body.

Dominique F. said...

The basic functioning of the nervous system are neurons. Axons carry messages away from the cell body. Dendrites receive messages from other neurons and send them to the cell body.

Dominique F. said...

The basic functioning of the nervous system are neurons. Axons carry messages away from the cell body. Dendrites receive messages from other neurons and send them to the cell body.

Aleha C (: said...

The basic functioning units of the nervous system are nerve cells or neurons.
Dendrites receive messages from other neurons and sends them to the cell body.
Axons carry messages away form the body.

Oja, Noah said...

The basic functioning units of the nervous system are neurons and cells. Dendrites receive messages and send them to a cell. Axons carry messages away!

Sarah(: said...

the basic functions of the nervous system are the cells and neurons. Dendrites get messages and send them to other cells

caelin w said...

the functioning uinits are neurons and cells

axons carry messages


dendrites receive messages

thatdaviddude said...

dendrites recieve messages and axons bring the messages

Jasmine Mason said...

The basic functions of the nervous system are called cells and neurons. Axons are used to carry messages away. Dendrites receive messages.

liamf364 said...

I don't know what either of them are.

Jewel (: said...

The basic functioning of the nervous system are nerve cells and neurons. Dendrites receive messages from other neurons and send them to the cell body. Axons carry messages away from the cell body.

Lexi F:) said...

The basic functions of the nervous system are neurons and cells. Dendrites receive messages and send them to a cell. Axons carry cells messages away so they dont get them.

Molly M said...

The basic functioning units of the nervous system are called neurons and axons.Dendrites receive messages from other neurons and send them to the cell body.Axons carry messages away from the cell body.

Rhiannon :P said...

The basic functioning units of the nervous system are neurons and cells. Axons arry messages to the brain while dendrites receive messages.

bruce fortney said...

the basic functions of the nervous system are the cells and neurons. Dendrites get messages and send them to other cells

Rhiannon :P said...

*carry

Camille D said...

The basic functions of the nervous system are neurons and cells, dendrites get messages and then sends them to other cells. axons carry messages to the brain.

DR KACEE said...

a cell body dendrites, an axon. Dendrites are thin structures that arise from the cell body, often extending for hundreds of micreometres and branching multiple times, giving rise to a complex "dendsritic tree". An axon is a special cellular exteonsion that arises from the cell body at a site called the axon hilock and travels for a distance, Not sure:) i tried

Stevey A said...

The basic funtions of the nervous system is the cells and neurons. Dendrites receive messages from other neurons and send them to cells. Axons carry away messages from the cell body.

Nurse Tyla G said...

The basic functions of the nervous system are neurons and cells. Dendrites get messages and stuff from the other neurons and then sends them to cells. The other one is axons carry away messages and stuff from the body.

nick said...

The basic funtions of the nervous system is the cells and neurons.

alex pinkham said...

The basic functions of the nervous system cells and neurons and axons also dendrites. Dendrites get messages and axons send/carry messages.

professor jacqueline said...

1.Dendrites (from Greek δένδρον déndron, “tree”) are the branched projections of a neuron that act to conduct the electrochemical stimulation received from other neural cells to the cell body, or soma, of the neuron from which the dendrites project. Electrical stimulation is transmitted onto dendrites by upstream neurons via synapses which are located at various points throughout the dendritic arbor. Dendrites play a critical role in integrating these synaptic inputs and in determining the extent to which action potentials are produced by the neuron. Recent research has also found that dendrites can support action potentials and release neurotransmitters, a property that was originally believed to be specific to axons.

The long outgrowths on immune system dendritic cells are also called dendrites. These dendrites do not process electrical signals.

Certain classes of dendrites (i.e. Purkinje cells of cerebellum, cerebral cortex) contain small projections referred to as "appendages" or "spines". Appendages increase receptive properties of dendrites to isolate signal specificity. Increased neural activity at spines increases their size and conduction which is thought to play a role in learning and memory formation. There are approximately 200,000 spines per cell, each of which serve as a postsynaptic process for individual presynaptic axons.
2.Structure of a typical neuron Axon
At one end of an elongated structure is a branching mass. At the centre of this mass is the nucleus and the branches are dendrites. A thick axon trails away from the mass, ending with further branching which are labeled as axon terminals. Along the axon are a number of protuberances labeled as myelin sheaths.
Dendrite
Soma
Axon
Nucleus
Node of
Ranvier
Axon terminal
Schwann cell
Myelin sheath

An axon (also known as a nerve fiber) is a long, slender projection of a nerve cell, or neuron, that typically conducts electrical impulses away from the neuron's cell body or soma.

An axon is one of two types of protoplasmic protrusions that extrude from the cell body of a neuron, the other type being dendrites. Axons are distinguished from dendrites by several features, including shape (dendrites often taper while axons usually maintain a constant radius), length (dendrites are restricted to a small region around the cell body while axons can be much longer), and function (dendrites usually receive signals while axons usually transmit them). All of these rules have exceptions, however.

Some types of neurons have no axon and transmit signals from their dendrites. No neuron ever has more than one axon; however in invertebrates such as insects or leeches the axon sometimes consists of several regions that function more or less independently of each other.[1] Most axons branch, in some cases very profusely.

Axons make contact with other cells—usually other neurons but sometimes muscle or gland cells—at junctions called synapses. At a synapse, the membrane of the axon closely adjoins the membrane of the target cell, and special molecular structures serve to transmit electrical or electrochemical signals across the gap. Some synaptic junctions appear partway along an axon as it extends—these are called en passant ("in passing") synapses. Other synapses appear as terminals at the ends of axonal branches. A single axon, with all its branches taken together, can innervate multiple parts of the brain and generate thousands of synaptic terminals.

And please don't accuse me of copying & pasting please & thank you!

jordan F. said...

The basic functions are cells and neurons. Dendrites get messages and axons send them.

Lucas T said...

Dendrites :Physiology a short branched extension of a nerve cell, along which impulses received from other cells at synapses are transmitted to the cell body.


Axon: The long thread part of a nerve cell.

Archer t said...

A dendrite is the short tree-like part of the nerve cell that connects to other nerve cells. An axon is the long connecter in a nerve cell that rallies information between nerve cells.

Aaron R said...

the basic functioning units of the nervous system are nurons and axons.

Kasey G. said...

Neurons are the basic functioning units of the nervous system. Dendrites and axons are parts of the neurons. Dendrites receive messages from other neurons and send messages them to the cell body. Axons carry messages away from the cell body.

Connor P said...

Dendrites receive messages from other neurons and send them to the cell body.

Axons carry messages away from the cell body.

Holly J said...

Dendrites are nerve cells that receive messages from other neurons and send them to the cell body.
Axons are nerve cells that carry messages away from the cell body.


Regulate an organism's perception of the world and what is going on with its body, thus regulating its behavior is the main function of the nervous system.

isaiahp said...

Dendrites are a short part of the nerve cell that connects nerve cell. Axon connects nerve cells that gives info in nerve cells.

emile w said...

What are dendrites? Receive messages from other neutrons and send messages to cells.

What are axons ? Carry messages away from cells.

Grace B(-; said...

The basic parts of the nervous system are the neurons. There's also somas, dendrites, axons, synapse, and myelin. Dendrites are short branched extensions of a nerve cells, along which impulses received from other cells at synapses are transmitted to the cell body. Axons are,The long threadlike part of a nerve cell along which impulses are conducted from the cell.

Sara H said...

The basic functioning units of the nervous system are called neurons.

Dendrites are nerve cells that receive messages from other neurons and send them to the cell body.

Axons carry messages away from the cell body.

matt c said...

Dendrites get messages and axons send them.

Ian C. said...

What are the basic functioning units of the nervous system called?
The basic functioning units of the nervous system are called the neurons, a neuron is a cell, it is made up of a cell body that branches out into things called dendrites

What are dendrites?
Dendrites are things that receive messages from neurons and send them away from the cell

What are axons ?
An axon is is something that carries away messages from the cell body.

Mason B said...

The basic functioning units of the nervous system are neurons. Dendrites and axons make up neurons. Dendrites receive messages from other neurons and send them to the cell body. Axons carry messages away from the cell body.

Liz Napolitano said...

What are the basic functioning units of the nervous system called? What are dendrites? What are axons ?
The basic functions of the nervous system things are called neurons and dendrites and axons.
The dendrites are the message receivers, they receive messages from the brain.
The axons are the message carriers, they carry the messages away from the cell body.


Liz Napolitano

Brian B. said...

The functions units of the nervous system are called neurons and dendrites and axons.Dendrites are the message receivers, they receive messages from the brain.The axons are the message carriers, they carry the messages away from the cell body.