Autonomic NS Introduction

Question 1

Sympathetic NS info

Answer 1

Thoracolumbar
Preganglionic short + cholinergic
Post long + adrenergic
Acts on sweat glands with cholinergic and muscarinic receptor
Acts on adrenal medulla with cholinergic
Non myelinated

Question 2

Parasympathetic Info

Answer 2

Craniosacral 
Long preganglionic 
Non myelinated 
AcH pre (Nicotinic)
AcH post (Muscarinic)

Question 3

Somatic info

Answer 3

Cholinergic on nicotinic

Has Nm receptor

Question 4

Adrenergic receptors (muscarinic) and functions

Answer 4

Lungs = B2
Eyes= radial muscle contraction A1 + ciliary muscle relaxation B2
Vessels= constriction A1 Dilation B2
Heart= B1
Bladder = detrusor muscle B2 trigone A1
Genitals= ejaculation A1
Salivary gland= A1

Question 5

Cholinergic Receptor Location and Function

Answer 5

M1 = Mediates higher cognitive functions + stimulates enteric nervous system

M2= Lower the heart rate and contractility of atria

M3= Increase exocrine glandsecretion (example lacrimal sweat salivary gastric acid) ,increase gut peristalsis,increase bladder contraction, increase bronchoconstriction, increase pupillary sphincter muscle contraction, ciliary muscle contraction, increase insulin release