Autonomic Physiology Flashcards
What is the two sections of the nervous system
what are the two sections of that
what are the sections of one of those
Central Nervous System and Peripheral Nervous System
Spinal Cords and Brain (CNS)
Autonomic and Somatic (PNS)
Parasymapethic and sympathetic nervous system (autonomic)
Where is the Central Nervous System and Peripheral Nervous System located?
PNS - Cranial and Sacral spinal cord (nerves)
SNS - Lumbar and thoracic
What is the afferent sesnory and efferent sesnory ?
examples of these
which direction they travel
Afferent is the input ~ skin sensing temperature
Efferent is action ~ causing physiological change
Afferent up to the nervous system
Efferent down to the brain + spinal cord
what is the difference between parasymaethic and symapethic nervous system
Parasymapethic allows body to ‘rest and digest’ also restoartive and energy conserving
Sypathetic allows ‘flight or fight’ also useful for ongoing activity
what kind of manner do the sympathetic and parasymapethic divdison work
what does this allow
simulateneously in a reciporal and complentary manner maintaining homestsis
What functions do these different organs have on maintenance of homeostatisis:
Skin (how)
Liver / pancreas
Lungs (to control what)
Heart / vasculature (how)
kidneys
Skin - thermoregulation (controlling contraction and relaxtion of smooth muscle in the vasculature)
Liver - metabolism of glucose and lipids
Lungs - ventilation to control partial pressures and pH
Heart - blood pressure by contraction and relaxation of smooth muscle in the vasculature
Kidneys - fluid balance
what are the three parts of homesostatisis for a negative feedback loop
Sensor - efferent senses the porblem
Comarator / Intergator - sends right singals (respiratory control centre)
effector - causes the physiological change
what is the anatomy of an ANS
ST CHAD
Axon Hillock
Myselin sheath
Axon Terminal
Axon
Dendrite
Cell Body
different functions of the sections of the ANS
Dentries
Myselin Sheath
Axon Terminal
- Action potential can propgoate down the axon (denrites reach other neuons and relay important information by action potential)
myselin sheath are more rapid conduction along the length and arrives at the axon terminal
Differences in PNS and SNS for:
Myelinated pre ganglionic fibres (neurons)
Pre ganglionic fibres synapse location
Unmyelinated post ganglionic fibres (Neurons)
pre neurons - SNS Short PNS LoNG
SNS in paravertebral or prevetebral gangila
PNS in target tissues or organs
Post - SNS long PNS short
What are the neurotransmitter and receptor for SNS for:
Pre ganglionic neruons
Post ganglionic neurons
Pre - acetylcholine and nicotinice acetylcholine receptor
post - acetylcholine and muscarinic acetylcholine receptor
OR noradreline and a1/a2 or b1/b2adrenrepcetors
What are the neurotransmitter and receptor for PNS for:
Pre ganglionic neruons
Post ganglionic neurons
Pre - acetylcholine and nicotoinic acetylcholine receptor
post - acetylcholine and musacrinic acetylcholine receptor
What is the RAPID reonse for non adrengeric non cholinergic transmission in PNS and SnS
PNS acetylcholine (ACH classic)
SNS adeonsine Tripophate (atp nanc)
What is the Medium response for non adrengeric non cholinergic transmission in PNS and SnS
PNS Nitroic oxide (NO , NANC)
Noradrenaline (NAclassic)
What is the SLOW reonse for non adrengeric non cholinergic transmission in PNS and SnS
PNS Intestinal peptide (VIP NANC)
Nueropeptide Y (NPY NANC)