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lecture 14 2 - Coggle Diagram
lecture 14
2
Autonomic nervous system(ANS)
divisions
sympathetic division
or
thoracolumbar division
consists of
thoracic
& lumbar chains of
sympathetic ganglia
parasympathetic division
or
craniosacral division
consists of
the ganglia associated with
3rd
7th
9th
& 10th cranial nerves
each has a
central n peripheral component
peripheral part locations
all autonomic nerves and ganglia throughout the body.
sympathetic n parasympathetic effects
1.Eye
iris muscle
ciliary muscle
Contracts radial muscle (dilates pupil) via α1
Relaxes (flattens lens for far vision) via β2
Contracts sphincter muscle (constricts pupil)
Contracts (makes lens to become more convex for far vision)
PARASYMPATHETIC
SYMPATHETIC
Arteriola (Coronary/
Skin/GUT/Renal)
Constricts (via α1, α2)
or dilates (via β2
Increases tear secretion
Salivary glands
Stimulates secretion (thick) via α1
Stimulates secretions (watery secretions)
Skeletal blood vessels
Constricts (via α1)
or dilates (via β2
Decreases HR, contractility and conductivity
Heart
Increases rate and force of contraction via
β1 and β2
Dilates
Lungs
a) Bronchial muscles
b) Bronchial glands
Relaxes via β2
Inhibits secretion (via α1) or
stimulates (via β2
1 more item...
7.stomach
2 more items...
ANS is an involuntary system
controls vegetative functinos
also called vegetative system