Autonomic Nervous system overview Flashcards
Where do the sympathetic division originate from
Interomedialateral horn of the spinal cord from T1-12 and L1-4
(associated ganglia are located near vertebral column)
preganglionic and post ganglionic fibre type and length (parasympathetic)
pre- long
Post- short
What are the ganglions of the sympathetic div
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)
What is the main end neurotransmitter of the sympathetic fibres
Norepinephrine except the sweat glands which is aching
what is the neurotransmitter in the sympathetic ganglia
ach
what do the parasympathetic div originate from
CN 3,7,9,10 and S2-4
How long are the pre/post ganglionic fibres (sympathetic)
short preganglionic fibres and long post ganglionic fibres
What is the main neurtransmitter of the end organs in the parasympathetic dib
Ach is both NT in ganglia and end organ
What are the 4 main parasympathetic ganglia of head
Cilliary (CN3)
Pterygopalantine (CN7)
Otic (CN9)
Submandibular(CN7)
What does the cilliary(2), pterygopalatine(3), otic(1)and submandibular ganglions (2)supply
cilliary- sphincter pupulie mm, cilliary mm
Pterygopalantie- lacrimal, nasal, palatine glands
otic- parotid gland
Submandibular- submandibular and sublingual salivary glands
which receptors are muscarinic in ANS
only postganglionic receptors
Which tissues only get sympathetic inn(4)
Blood vessels
rector pili
adrenal medula (preganglionic sympathetci)
Sweat glands
What tissue only gets parasympathetic info
Bronchial glands
what do a adrenergic receptors cause
contraction of smooth mm
What doe b1 receptors cause
increase in HR and force of contraction
What do B2 receptors cause
relaxation of smooth mm- EXCEPT to the receptors to the rector pili which cause contraction
What is the enteric brain made up of
Menteric plexus of Auerbach
Submucosal plexus of Meissner
Where does the plexus of auerbach and plexus of mesissener found
Auerbach- bw inner circular and longitudinal smoke (regulates contraction)
(Auerbach lies on the Autside)
Messiner- under mucosa (regulates secretion
what are the 3 autonomic visceral reflexes
Viscerovisceral
Viscerosomatic
Somatoviscera
What is a visceroviseral reflex and ex
begins and ends w visceral
eg pressure on carotid sinus causes reflex with slows the HR
What is a viscerosomatic reflex and ex
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
e
