Organisation of the NS Flashcards
Where are the ganglia located in a) the sympathetic and b) parasympathetic?
a) close to the CNS
b) close to or in the target
What is a collection of cell bodies in the CNS called?
Nucleus
What are the ganglionic neurotransmitters in both parasympathetic and sympathetic?
Acetylcholine and nicotinic
What NT is used in the somatic NS for a) efferent and b) afferent?
a) acetylcholine and b) glutamate
What is the postganglionic receptor and NT for parasympathetic and sympathetic?
Parasympathetic- acetylcholine and muscarinic
Sympathetic- noradrenaline a and b
What is a bundle of axons in the PNS called?
Nerve
Where is the neurone body located in a) efferent and b) afferent neurones of the somatic NS?
a) CNS and b) PNS
What type of muscle does the autonomic NS control?
Smooth and cardiac muscle
What is a ganglion in terms of neurones?
A collection of cell bodies in the PNS
Do parasympathetic or sympathetic have long preganglionic fibres?
Parasympathetic
Which parasympathetic or sympathetic has branched postganglionic fibres?
Sympathetic
What is a tract in terms of neurones?
A bundle of axons in the CNS
What type of muscle does the somatic NS control?
Skeletal muscle
What are supporting glia called?
Astrocytes
What do microglia do?
Immune cells of the CNS, clean up the toxic waste in the CNS after death. ‘Scavengers’
What do astrocytes do?
Provide nutrients to the nervous tissue and the repairing/scarring process in the brain
Give the types of nerve cell?
Neurones
What does the CNS include?
The brain and the spinal chord
What does the PNS include?
The periphery neurones
What branches of the autonomic NS are there?
Sympathetic and parasympathetic
What neurones go from the receptor to the CNS?
Afferent
What two branches of the motor PNS are there?
Autonomic and somatic
What neurones go from the CNS to the effector?
Efferent
What two types of neurones are involved in the somatic NS?
Sensory afferent and motor efferent
What do the dendrites and axons of neurones do?
Dendrites receive information and axons pass on information
Can multiple synapses contact one dendrite?
Yes
Give the three types of supporting cells?
Neuroglia, glial cells and glia
What are the two types of cells in the NS?
Nerve cells and supporting glia
Is sympathetic or parasympathetic used for housekeeping?
Parasympathetic, sympathetic is for flight, fright and fight response
What functions do the parasympathetic and sympathetic NS have?
Anatomical and functional devision, generally antagonistic
What is the somatic nervous system often called?
The voluntary nervous system
Which axons in the somatic nervous system are myelinated?
Efferent, afferent are not.
