IMED1001 Lecture Notes - Lecture 13: Atropine, Nicotinic Antagonist, Skeletal Muscle
15 Aug 2018
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Lecture 31: the autonomic nervous system part 2: 29th may. Describe the neurotransmitter and synaptic physiology of the ans: name the neurotransmitters employed at different synapses of the ans, name the receptors for these neurotransmitters and explain how they relate to autonomic effects. Discuss the function of the adrenal medulla in the alarm or stress response. Name some drugs that can be used to manipulate the function of the ans, and state their sites of action. Acetylcholine (ach): excitatory or inhibitory: nicotinic (nachr) Noradrenaline (na)- excitatory or inhibitory: alpha-adrenergic receptors: Ganglion = a collection of nerve cell bodies outside the cns. Postganglionic neuron cell body is a ganglion. Postganglionic ans nerves releases effector nts via varicosities. Not discrete like nmjs, spread more nt around, prolonged + subtle response (nts diffuse to other cells) One nerve fibre from cns to effector; no ganglia. Two nerve fibre from cns to effector; synapse at a ganglion.
