Autonomic physiology 1&2 Flashcards
Autonomic nervous system - ganglia
Have a presynaptic and postsynaptic neuron due to synapse at a ganglia
Somatic description
- always excites
- ionotropic receptors
- specialised NMJ
Autonomic description
- excites or inhibits
- metabotropic receptors
Sympathetic
Thoracolumbar
Ganglia close to parasympathetic chain
Ach - nicotinic NA - alpha or beta
Parasympathetic
Craniosacral
Ganglia close or in target
Ach - nicotinic Ach - muscarinic
Acetylcholine
Cholinergic receptors = nicotinic or muscarinic
Noradrenaline
Adrenergic receptors = alpha or beta
The eye
Ciliary muscle - contract and focus far away
Radial muscle - contracts and pupil dilates
Antagonistic action
The heart
Beta 1 - rate and strength
The lungs
Beta 2 - dilates airways
Muscarinic
Blood vessels
Alpha 1/ beta 2
Para = no effect
TONE
Energy stores
Single innervation
Salivary
Non antagonistic dual innervation
Reproductive
Dual innervation with agonistic effects
