Motor & Sensory Neurones

Created by: ashleighholmes23
Created on: 20-01-16 17:04


	Motor & Sensory Neurones
	Similarities Both have cell bodies Both have dendrites connected to other neurones Function of a neurone is to transmit the action potential from one part of the body to another	Differences Sensory neurone has long dendron & motor neurone has no dendron Sensory short axon & motor long axon Sensory neurone has cell body attached to dendron & motor has cell body at end of neurone Sensory dendrites for from cell body & motor dendrites connect to cell body Motor neurones have cell body in CNS with long axon that carries AP out to the effector Sensory neurones have long dendron carrying AP from sensory receptor to cell body outside CNS
	Overall comparison Neurones are specialised cells with the following features:- Many very long transmit the AP over a long distance- CSM gated ion channels that control the entry/exit of sodium, potassium or calcium ions- Sodium potassium ion pumps that use ATP to actively transport sodium ions out of the cell & potassium ions into the cell- Maintain potential difference across the CSM- Surrounded by myelin sheath (series of Schwann cells) that insulates the neurone from electrical activity- Cell body contains nucleus mitochondria & ribosomes-

Motor & Sensory Neurones

Similarities

Both have cell bodies
Both have dendrites connected to other neurones
Function of a neurone is to transmit the action potential from one part of the body to another

Differences

Sensory neurone has long dendron & motor neurone has no dendron
Sensory short axon & motor long axon
Sensory neurone has cell body attached to dendron & motor has cell body at end of neurone
Sensory dendrites for from cell body & motor dendrites connect to cell body
Motor neurones have cell body in CNS with long axon that carries AP out to the effector
Sensory neurones have long dendron carrying AP from sensory receptor to cell body outside CNS

Overall comparison

Neurones are specialised cells with the following features:- Many very long transmit the AP over a long distance- CSM gated ion channels that control the entry/exit of sodium, potassium or calcium ions- Sodium potassium ion pumps that use ATP to actively transport sodium ions out of the cell & potassium ions into the cell- Maintain potential difference across the CSM- Surrounded by myelin sheath (series of Schwann cells) that insulates the neurone from electrical activity- Cell body contains nucleus mitochondria & ribosomes-

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Motor & Sensory Neurones