The somatic nervous system has heavily myelinated neurones connecting the CNS to receptor and effector organs.The autonomic nervous system has lightly myelinated preganglionic axons and unmyelinated postganglionic axons.ACh(acetylcholine) is the neurotransmitter for the somatic and parasympathetic nervous systems whilst noradrenaline is the neurotransmitter for the sympathetic nervous system.
Comparison of Neurones
Read the text
Read the text and highlight anything you think is important. When you go on, the text is hidden and you answer from memory.
Specification: AQA Biology (7402), A-level, 3.6.2.1 Nerve impulses. Topic: Neuronal Communication.
More in Neuronal Communication
- Summation
- Structural Organisation of the Nervous System
- Functional Organisation of the Nervous System
- The Autonomic Nervous System
- Receptors in the Eye - Rod Cells
- Receptors in the Eye - Cone Cells
- Sino-Atrial Node
- Contraction of the Heart
All 38 lessons in Neuronal Communication · All AQA A-level Biology topics