Autonomic Nervous system overview

Question 1

Where do the sympathetic division originate from

Answer 1

Interomedialateral horn of the spinal cord from T1-12 and L1-4
(associated ganglia are located near vertebral column)

Question 2

preganglionic and post ganglionic fibre type and length (parasympathetic)

Answer 2

pre- long

Post- short

Question 3

What are the ganglions of the sympathetic div

Answer 3

Cardiac plexus (T1-4)
Greater splanchnic (t5-9) to celiac ganglion
Lesser splanchnic(T10-11) to superior mesenteric
Least splanchnic (T12) to aorticorenal
Inf hypogastic (l1,2)

Question 4

What is the main end neurotransmitter of the sympathetic fibres

Answer 4

Norepinephrine except the sweat glands which is aching

Question 5

what is the neurotransmitter in the sympathetic ganglia

Answer 5

ach

Question 6

what do the parasympathetic div originate from

Answer 6

CN 3,7,9,10 and S2-4

Question 7

How long are the pre/post ganglionic fibres (sympathetic)

Answer 7

short preganglionic fibres and long post ganglionic fibres

Question 8

What is the main neurtransmitter of the end organs in the parasympathetic dib

Answer 8

Ach is both NT in ganglia and end organ

Question 9

What are the 4 main parasympathetic ganglia of head

Answer 9

Cilliary (CN3)
Pterygopalantine (CN7)
Otic (CN9)
Submandibular(CN7)

Question 10

What does the cilliary(2), pterygopalatine(3), otic(1)and submandibular ganglions (2)supply

Answer 10

cilliary- sphincter pupulie mm, cilliary mm

Pterygopalantie- lacrimal, nasal, palatine glands

otic- parotid gland

Submandibular- submandibular and sublingual salivary glands

Question 11

which receptors are muscarinic in ANS

Answer 11

only postganglionic receptors

Question 12

Which tissues only get sympathetic inn(4)

Answer 12

Blood vessels
rector pili
adrenal medula (preganglionic sympathetci)
Sweat glands

Question 13

What tissue only gets parasympathetic info

Answer 13

Bronchial glands

Question 14

what do a adrenergic receptors cause

Answer 14

contraction of smooth mm

Question 15

What doe b1 receptors cause

Answer 15

increase in HR and force of contraction

Question 16

What do B2 receptors cause

Answer 16

relaxation of smooth mm- EXCEPT to the receptors to the rector pili which cause contraction

Question 17

What is the enteric brain made up of

Answer 17

Menteric plexus of Auerbach

Submucosal plexus of Meissner

Question 18

Where does the plexus of auerbach and plexus of mesissener found

Answer 18

Auerbach- bw inner circular and longitudinal smoke (regulates contraction)
(Auerbach lies on the Autside)

Messiner- under mucosa (regulates secretion

Question 19

what are the 3 autonomic visceral reflexes

Answer 19

Viscerovisceral
Viscerosomatic
Somatoviscera

Question 20

What is a visceroviseral reflex and ex

Answer 20

begins and ends w visceral

eg pressure on carotid sinus causes reflex with slows the HR

Question 21

What is a viscerosomatic reflex and ex

Answer 21

originates in internal organ and causes peripheral mm to contract or relax

Hering Breur reflex- inflation of the lung triggers diaphragm to reflex

inflammation of of gallbladder causes spasm of paravert mm in region of T9

Question 22

e