Nervous system

HideShow resource information
  • Created by: Anjelala
  • Created on: 13-03-17 14:13
Functions of nervous system
Senses change, Sends info to the brain, Interprets the info ( known as integration )
1 of 36
What is the central nervous system?
Brain and spinal cord
2 of 36
2 principle parts of the nervous system?
-Central nervous system -Peripheral nervous system
3 of 36
what is the central nervous system ?
Brain and spinal cord
4 of 36
Function of central nervous system?
Carries out integration and control
5 of 36
Function of peripheral nervous system?
Consists mainly of nerves that extend from the brain and spinal cord
6 of 36
What is the peripheral nervous system further divided into ?
-Sensory ( afferent ) division.
7 of 36
What does the sensory division pass towards?
The brain and spinal cord.
8 of 36
Where does the motor division pass away from?
The brain and spinal cord
9 of 36
What is another word for the motor division ?
Efferent division
10 of 36
What is the motor division further divided into ?
1)Autonomic nervous system 2)Somatic nervous system
11 of 36
What is the Peripheral nervous system ?
Nerves and Ganglia
12 of 36
Define the term autonomic
- Under involuntary control
13 of 36
Explain the autonomic concept
- Conducts impulses from the central nervous system to cardiac muscle, smooth muscle and glands.
14 of 36
What is th eAutonomic nervous system divided into ?
-Sympathetic division
15 of 36
What doe the sympathetic division do ?
Mobilises body systems during emergency situations ( Flight and Flight)
16 of 36
What is the parasympathetic division? What does it do ?
- Conserves energy , promotes non emergency functions
17 of 36
Define the term somatic?
Under voluntary control .
18 of 36
What are Nervous tissues formed by?
Two main families of cells. 1) Neurones 2) Neuroglia
19 of 36
What are the four Neuroglia of the central nervous system?
1)Astrocytes 2)Microglia 3)Ependymal cells 4)Oligodendrocytes
20 of 36
Role of Astrocytes?
Key role in transport of nutrients and neurotransmitters in the nervous system.
21 of 36
Role of Microglia ?
Protects cells of the nervous system, have a phagocytic action.
22 of 36
Role of Ependymal cells ?
Forms barrier between the brain tissue and cerebro- spinal fluid
23 of 36
Role of Oligodendrocytes?
Forms the myelin sheath which surrounds some neurons.
24 of 36
What does SSRI stand for ?
Selective serotonin reuptake inhibitor .
25 of 36
What are SSRI drugs?
Family of antidepressant drugs.
26 of 36
What do Neurons do ? ( Very simple)
Conducts messages in the form of electrical impulses from regions of the body.
27 of 36
What is the gap at the end the axon called?
- A synapse.
28 of 36
What are neurons in their resting state referred to as?
- Resting potential
29 of 36
What is the resting membrane potential of a neuron?
-70 millivolts
30 of 36
Define what the resting membrane potential is ?
- Difference between overall negative charge inside the membrane, compared with outside the membrane.
31 of 36
When are Action potentials generated?
- When the neurons respond to changes in ion concentration.
32 of 36
What is another term for Action potential ?
Nerve impulse
33 of 36
What is Myelin ?
Lipid based chemical that surrounds axon
34 of 36
What do Myelinated axons do ?
Conduct nerve impulse more rapidly than unmyelinated axons.
35 of 36
What occurs at the synapse?
Electrical message is converted into a chemical message in the form of a neurotransmitter.
36 of 36

Other cards in this set

Card 2


What is the central nervous system?


Brain and spinal cord

Card 3


2 principle parts of the nervous system?


Preview of the front of card 3

Card 4


what is the central nervous system ?


Preview of the front of card 4

Card 5


Function of central nervous system?


Preview of the front of card 5
View more cards


No comments have yet been made

Similar Nursing resources:

See all Nursing resources »See all Nervous system resources »