Introduction to the ANS Flashcards
Pharmacodynamics
What drugs do to the body
Pharmacokinetics
What the Body does to the drugs
Pupil when you enter a dark room - SNS or PNS?
SNS
Digestion - SNS or PNS?
PNS
Blood loss effect on Heart - SNS or PNS?
SNS
Divisions of the Nervous system,
CNS and PNS (divided into ANS and other)
How many segments is the spinal cord divided into?
31 (8C, 12T, 5L, 5S, 1C)
What is a ganglion?
A ganglion is a group of cell bodies outside the CNS
Outflow in the SNS?
Thoracolumbar (T1-L2 or L3)
Outflow in the PNS?
Craniosacral (CN III, VII, IX, X)
What are the main target organs of the PNS?
Gastrointestinal - Digestion is promoted, increased secretions, increased motility and tone
Heart - decreased rate and contractility
Ureters and Bladder - Contraction of detrusor; relaxation of trigone and sphincter
Trachea and Bronchioles - constriction
Salivary Glands - Copious, watery secretion
Eye - constriction of Pupil, contraction of the ciliary muscle
What are the main organs of the SNS?
Heart - increase rate and contractility
Eye - Dilation of Pupil
Trachea and Bronchioles - Dilation through Adrenalin?
Adipose Tissue - Lipolysis
Liver - Gluconeogenesis, Glycogenolysis
Kidney - Increased Renin secretion
Ureters and Bladder - Relaxes detrusor; constriction of trigone and sphincter
Blood vessles - constriction (skin, mucous membranes and splanchnic area )
Blood vessles - Dilation of BV in skeletal muscle
Skin - Piloerection, Increased sweating (C)
Salivary Glands - Thick, viscious secretion
What is the main NT in the SNS?
NE
What is the main NT of the PNS?
ACh
In what ways do cranial and spinal nerves differ from one another?
Cranial nerves emerge from the brain, some are sensory some are motor, some are mixed.
Spinal nerves from the spinal cord, all are mixed.