Spinal Anatomy Tracts (ANS & ENS) Flashcards
The ANS is divided into what two groups
Sympathetic and Parasympathetics
The ANS innervates what
Involuntary structures such as the heart, smooth muscle and glands
Sympathetic axons include what cord levels
T1-L2/L2
The Sympathetics have short or long Pre-/Postganglionic axons
Pre- short
Post- Long
What neurotransmitter does the pre and postganglionic axons release
Pre- ACH (Acetylcholine)
Post- Epinephrine and Norepinephrine
Parasympathetic axons include what levels
CNs III, VII, IX and X
Sacral nerves S2-S4
What are the lengths of the Pre and Postganglionic Axons of the Parasympathetic axons and what neurotransmitter do they release
Long Pre and they release ACH
Short Post ganglionic and they release ACH
The Enteric division of the nervous system controls what
the GI tract
What are the Two types of ganglia found in the ENS
Myenteric (auerbach’s) and Submucosal (Meissner’s)
What does Myenteric (Auerbach’s) ganglia doe
motor innervation to both layers of tunica muscularis
what type of autonomics are found in the myenteric ganglia
both para and sympathetics
what is the submucosal (meissner’s) ganglia do as well as what type of autonomics are found within it
Secretomotor to lumen and ONLY parasympathetics
How many Neurotransmitters are found in the Enteric system
over 30 NT’s
95% of serotonin found in the bowels and 50% dopamine
the enteric division of the nervous system is also known as what
the second brain of the body
