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Neurophysiology part 2
p. 26-47; Exam III
35
Physiology
Graduate
07/15/2014

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Term
True or False: The cranial nerves (except CN II-Optic) are considered part of the peripheral nervous system?
Definition
True
Term
True or False: Cranial nerves can also carry both sensory and motor information?
Definition
True
Term
12 Cranial Nerves Mnemonic
Definition
"On Old Olympus Towering Tops, A Finn and German Viewed Some (spinal accessory) Hops"
Term
Motor vs. Sensory CN Mnemonic
Definition
"Some Say Marry Money But My Brother Says Big Butts Mean More"
Term
The autonomic nervous system is further divided into what systems?
Definition
Parasympathetic & Sympathetic
Term
Constricts pupils
Stimulates tear glands
Strong stimulation of salivary flow
Inhibits heart, dilates arterioles
CONSTRICTS BRONCHI
Stimulates stomach motility and secretion, stimulates pancreas
Contracts bladder
Stimulates erection
Definition
Parasympathetic Division
"Rest & Digest"
"Feed & Breed"
"P for Point"
Term
Dilates pupils
No effect on tear glands
Weak salivary flow
Accelerates heart, constricts arterioles
DILATES BRONCHI
Inhibits stomach motility, pancreas and adrenals
Relaxes bladder
Stimulates ejaculation
Definition
Sympathetic Division
"Flight or Fight"
"S for Shoot"
Term
Preganglionic neurons of the sympathetic nervous system originate in the intermediolateral grey horn of the spinal cord between_______ and ________also called the __________ division, which forms the sympathetic chain?
Definition
T-1
L2/L3
thoracolumbar
Term
True or False: The sympathetic nervous system preganglionic fibers are short, whereas the postganglionic fibers are long and unmyelinated?
Definition
True
Term
The autonomic pathway contains how many neurons?
Definition
2; pre- and post-ganglionic fibers
Term
The SHORT preganglionic fibers release what at the junction?
Definition
Acetylcholine
Term
Acetylcholine attaches to the ________ receptors at the sympathetic nervous system preganglionic junctions?
Definition
Nicotinic
Term
The long, unmyelinated (SNS) postganglionic fibers synapse with the _______ organ and secrete ________?
Definition
Efferent
Norepinephrine
Term
Norepinephrine attaches to ______ and ______ receptors (choose below)?

a. Afferent/Efferent
b. Delta/Gamma
c. Alpha/Beta
d. Sigma/Theta
Definition
C
Term
True or False: The preganglionic fibers exit the spinal cord via the anterior ventral root and enter the sympathetic chain?
Definition
True
Term
True or False: The preganglionic fibers which enter the sympathetic chain are stationary and DO NOT ascend or descend at the level from which they were generated?
Definition
False: they may ascend, descend or synapse at the level from which they are generated
Term
The LONG postganglionic fiber ends on?
Definition
the organ:-) (sounds kinda dirty)
Term
Stellate ganglia is formed by the inferior _______ and first _______ ganglia.
Definition
Cervical & Thoracic
(eye, lachrymal glands, salivary glands, sweat glands, hair follicles & blood vessels of head, neck & arms)
Term
Side effects of blocking the Stellate Ganglia?
Definition
Horner's Syndrome

(IPSILATERAL, miosis, ptosis, anhydrosis, flushing, increased skin temperature, nasal stuffiness/congestion)

Miosis=pupil constriction (blocking SNS)
Ptosis=eye droop
Anhydrosis=no sweating on side of face
Term
The adrenal medulla is the major organ of what system?
Definition
Sympathetic Nervous System
Term
The adrenal medulla secretes what two catecholamines? Which one is secreted in a greater quantity?
Definition
Epinephrine (great quantities)
Norepinephrine (little)
Term
The adrenal medulla consists of (1) type of neuron (pre or post) ganglionic fibers?
Definition
Pre-ganglionic (NO post-ganglionic fibers); Epinephrine is stimulated to be released (via the release of ATCH) from the preganglionic fibers
Term
Autonomic sweating is produced by (sympathetic/parasympathetic) nervous system? (choose one)
Definition
SNS
Term
Sweating is produced when the preganglionic fiber secretes ATCH and the postganglionic fiber secretes (Norepinephrine/ATCH)? (choose one)
Definition
ATCH-Acetylcholine is not just a parasympathetic neurotransmitter, but can be released by the sympathetic nervous system postganglionic fibers which secrete ATCH resulting in muscarinic stimulation of sweat glands.
Term
The "rest & digest" parasympathetic division is also known as the craniosacral division and arises from what cranial nerves?
Definition
CN II, VII, IX, X (also arises from S1-S5)
Term
The parasympathetic preganglionic fibers are (short/long) and are (myelinated/unmyelinated)?
Definition
Long and myelinated
Term
ATCH is released from the parasympathetic preganglionic fibers and attach to (nicotinic/muscarinic) receptors on the postganglionic fibers?
Definition
Nicotinic
Term
The postganglionic fibers of the parasympathetic nervous system are (short/long) and (myelinated/unmyelinated)?
Definition
Short and unmyelinated
Term
The postganglionic fibers of the parasympathetic nervous system release (norepinephrine/ATCH) at the organ which attaches to (nicotinic/muscarinic) receptors?
Definition
ATCH and muscarinic
Term
Constricts pupils, salivation, decreases heart rate, constricts coronary vessels, contracts bladder, constricts bronchioles, increases peristalsis, erection, stimulates insulin release...
Definition
Parasympathetic Effects
Term
Dilates pupils, sweating in large amounts (cholinergic), piloerection, increases heart rate and contraction force, dilates coronary vessels, relaxes bladder, dilates bronchioles, decreased digestive activity, release RENIN to increase BP, ejaculation, increase coagulation rates, increase metabolic rates, stimulates adipose tissue breakdown, increased mental alertness, dilates blood vessels serving skeletal muscle (cholinergic), inhibits insulin secretion (Epinephrine gtts cause elevated blood sugar levels)
Definition
Sympathetic Effects
Term
Who is the 'BOSS' of the autonomic nervous system?
Definition
Hypothalamus; anterior/medial regions direct the PSNS and the posterior/lateral regions direct the sympathetic functions
Term
These centers in the hypothalamus control directly via the ________ _________ (e.g., the cardiovascular centers in the medulla oblongata, respiratory centers in the MO and pons, etc.)?
Definition
Reticular Formation
Term
The _______ system of the hypothalamus mediates the "flight or fight" EMOTIONAL response to situations?
Definition
Limbic
Term
The relationship between the hypothalamus and the ________ and periaquaductal _______ matter allow us to respond to fear
Definition
Amygdala
Gray
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