cookietime
Mind Map by , created over 5 years ago

A Levels Biology (Response to stimuli) Mind Map on Neurones, created by cookietime on 03/11/2014.

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cookietime
Created by cookietime over 5 years ago
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Neurones
1 Structure
1.1 cell body
1.1.1 contains nucleus
1.1.2 lots of rough endoplasmic reticulum
1.1.2.1 produces proteins and neurotransmitters
1.2 dendrons
1.2.1 dendrites
1.2.1.1 carries nerve impulses TO cell body
1.3 axon
1.3.1 single long fibre
1.3.1.1 carries nerve impulses AWAY from cell body
1.3.2 surrounded by
1.3.2.1 Schwann cells
1.3.2.1.1 protection and electrical insulation
1.3.2.1.2 carry out phagocytosis
1.3.2.1.2.1 removal of cell debris
1.3.2.1.3 involved in nerve regeneration
1.3.2.1.4 nodes of Ranvier
1.3.2.1.4.1 gaps between Schwann cells where there's no myelin sheath
1.3.2.2 wrapped around many times
1.3.3 myelin sheath
1.3.3.1 made of membranes of Schwann cells
1.3.3.1.1 rich in myelin
2 Types
2.1 Myelin sheath
2.1.1 unmyelinated neurones
2.1.2 myelinated neurones
2.1.2.1 transmit nerve impulses faster
2.2 Classifications
2.2.1 sensory
2.2.1.1 receptor
2.2.1.1.1 to intermediate or motor neurone
2.2.1.2 one dendron
2.2.1.2.1 carries to cell body
2.2.1.3 one axon
2.2.1.3.1 carries away from cell body
2.2.2 motor
2.2.2.1 intermediate or sensory
2.2.2.1.1 to effector
2.2.2.1.1.1 glands
2.2.2.1.1.2 muscles
2.2.2.2 long axon
2.2.2.3 many short dendrites
2.2.3 intermediate
2.2.3.1 transmit between neurones
3 Specialised cells adapted to carry nerve impulses across the body.

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