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Nervous System

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on 28 October 2013

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Transcript of Nervous System

Nervous System
Brain and spinal
Recieves signals from all parts of the body
Monitors and coordinates internal organ functions
Responds to changes in external enviroment

Path A Nerve Impulse Travels
Major Parts
1. Stimuli
2. Sensory Receptors
brain and their functions
3. Sensory Neurone
4. C.N.S. Spinal cord
frontal lobe- associated with reasoning planning , parts of speech, movement , emotions and problem solving.
parietal lobe- associated with moment orientation, recognition, perception of stimuli.
occipital lobe- associated with visual processing.
temporal lobe- associated with perception and recognition of auditory of auditory stumli, memory and speech.
Peripheral Nervous System
spinal cord and their function
The spinal cord is basically the "information highway of the body", messages are sent back and forth between the brain and the rest of the body.
This information includes touch, temperature, pain, joint position and signals telling muscles to move.
Spinal cord is one of the most important part of our body . Primarily spinal cord function include transmission to information and initiation of reflexes . In simple words the spinal cord help in connecting the various organs of body to the brain.
About the Nervous System
5. Relay Neuron
Peripheral Nervous System
nerves and their function
Made of sensory neuron (runs from stimulous receptors that inform nervous system of the stimuli)
Made of motor neurons running fron central nervous system to the muscle and glands
Divided into sensory somatic nervous system and autonomic nervous system
6. Brain
6. Motor Neurone
Coordinates any body activities, such as walking or talking.
7. Effector
The functions of the nerve cells is to carry messages around our body. To adapt to their job, they are very long and are branched at each end.
Nerve cells receive, carry, and pass electrical impulses.
neurons and their function
Sensory-Somatic Nervous System
12 pairs of cranial nerves (controls 5 senses, facial expressions, and facial movement
31 pairs of spinal nervers (sensoy)
Conducts sensory information from peripheral nervous system to the brain
Conducts motor information from brain to various effectors
Recieves sensory input from spinal cord as well as nerves
About the Nervous System
Has two functions: Central Nervous System and Peripheral Nervous System.
Functions the Nervous System
About the Nervous System
There are more nerve cells in the human brain than the are stars in the Milky Way.
The nervous system probably the most important system in a human body.
About the Nervous System
The central system is your brain and spinal cord, and contains billions of neurons. Its job is to receive, send, and understand information to all the parts of the body.
The peripheral system is the system that contains all the nerves outside of the central nervous system.
Spinal Cord
A neuron consists of a cell body, many branched dendrites receiving sensory information, and a single axon arising from an axon hillock on the cell body that transmits motor information away from the neuron.
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