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Flashcards in Nerve Tissue Deck (12)
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1

Where is nervous tissue found ?

Found all over the body in the nervous system

2

What are neurons?

Nerve cells

3

What is the structure of a motor neuron?(6)

-Cell body with threads spreading out
-Axons
-Dendrites
-Schwann cells
-Myelin sheath
-Synapse

4

What are axons?

Axons transmit nerve impulses away from the cell body.

5

What are dendrites?

Transmit nerve impulses towards the cell body.

6

How is myelin sheath formed and what is it?

The axon is enclosed by Schwann cells which produce a myelin sheath. The sheath which protects the nerves from other electrical impulses . (Like an insulator around an electric wire)

7

What is a synapse?

The site where a nerve impulse is transmitted from one neuron to the next is called a synapse.

8

How impulses transmitted from neuron to neuron?

By means of neurotransmitters

9

What is a neurotransmitter?

This is a chemical substance produced in the axon and stored in synaptic vesicles and diffuse towards the dendrite of the next neuron.

10

Neurons are in contact by contact called ______.
Synapses form between branched ends of an _____ and a _______.
One neuron can transfer ______ to more than one other neuron.
Synapses are not ____ contacts, but a microscopically small synaptic gap occurs between the axon and dendrite

Synapses
Axon
Dendrite
Impulses
Direct

11

What is a synapse?

A synapse is a structure that permits a neuron to pass an electrical or chemical signal to another neuron.

12

What are types of neurons?(3)

-interneuron
-motor neuron
-sensory neuron