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Autonomic Nervous System - Anatomy & Physiology (view source)
Revision as of 15:02, 12 March 2011
, 15:02, 12 March 2011→Neurotransmitters and Effects
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These long reflex arcs primarily act to coordinate and regulate the activity of different sections of the GI tract. The PNS long reflex arcs are mainly involved in preparing sections for activity as they are mainly stimulatory. An example of this would be that the mastication of food stimulates salivary secretion but also secretion of gastric juice, pancreatic juice and bile.
These long reflex arcs primarily act to coordinate and regulate the activity of different sections of the GI tract. The PNS long reflex arcs are mainly involved in preparing sections for activity as they are mainly stimulatory. An example of this would be that the mastication of food stimulates salivary secretion but also secretion of gastric juice, pancreatic juice and bile.
==Neurotransmitters and Effects==
== Neurotransmitters and Effects ==
A section regarding the type of neurotransmitter and its effect from both the SNS and PNS has been included to display the most common types of receptors and their function for the major body systems. The table below is not exhaustive but highlights the main neurotransmitters.
[[Category:Nervous System - Anatomy & Physiology]]
[[Category:To Do - A&P]]
==== Actions of ANS ====
{| style="width:100%; height:100px" border="1"
|-
! '''Organ/Body System'''
! '''Target'''
! '''Sysmpathetic Nervous System''' (adrenergic)
! '''Parasympathetic Nervous System''' (cholinergic)
|-
| Heart
| Cardiac Output: Heart Rate (SA Node), Contractility (Atrial Cardiac Muscle)
| ß1 and ß2 (increases)
| M2 (decreases)
|-
| Heart
| Ventricular Cardiac Muscle
| ß1 and ß2 (increases contractility and automaticity)
| No effect
|-
| Heart
| Atrioventricular Node (AV)
| ß1 (increases conduction and automaticity)
| M2 (decreases conduction and increases AV blocking)
|-
| Relaxation
| '''Bronchi'''
| Constriction
|-
| Secretion
| '''Adrenal Medulla'''
| No effect
|-
| Decreased Activity
| '''GIT'''
| Increased Activity
|-
| Relaxation
| '''Bladder'''
| Relaxation
|-
| No effect
| '''Erectile Tissue'''
| Vasodilation
|}
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[[Category:Nervous_System_-_Anatomy_&_Physiology]] [[Category:To_Do_-_A&P]]