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A/P I: Autonomic Nervous System
Autonomic Nervous System
36
Anatomy
Undergraduate 2
10/24/2009

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Term
Sympathetic nervous system
Definition
Prepares the body for action
Term
Parasympathetic nervous system
Definition
Regulates vegetative functions
Term
General functions of ANS
Definition

1. Innervate glands, smooth and cardiac muscles

2. Dual innervation

3. Two synapes at ganglion and organ

4. Unconscious regulation

5. Inhibition or stimulation of target tissues

Term
Reciprocal innervation
Definition
Opposite action of parasymphathetic and sympathetic nervous system where one will inhibit while the other excites.
Term
Only structure that does not have dual innervation by the ANS, only sympathetic nervous system.
Definition
Blood vessels
Term
ganglion =
Definition
synapse
Term
Contain cell bodies within the PNS
Definition
Ganglion
Term
cholinergic cells
Definition
release acetylcholine
Term
adrenergic cells
Definition
release norepinephrine
Term
receptors for cholinergic cells
Definition
nicotinic and muscarinic
Term
receptors for adrenergic cells
Definition
alpha and beta
Term
G-protein receptors of the ANS that can be either excitatory or inhibitory
Definition
Muscarinic, alpha and beta
Term
receptors with ligand gated Na+ channels of the ANS that are always excitatory
Definition
nicotinic receptors
Term
Axons of the sympathetic nervous system that innervate sweat glands, smooth muscle of blood vessels to skeletal muscle and skin, and arrector pili.
Definition

Spinal nerves

 

Head and neck nerve plexuses

Term
Sympathetic axons that innervate the heart and lungs.
Definition
Thoracic nerve plexuses
Term
Sympathetic axons that innervate organs of the abdominopelvic cavity.
Definition
Abdominopelvic nerve plexuses
Term
Parasympathetic axons that innervate heart, lungs, esophagus and digestive organs.
Definition
Vagus cranial nerve
Term

All cholinergic...

parasympathetic or sympathetic?

Definition
Parasympathetic
Term

Can be either colinergic or adrenergic...

sympathetic or parasympathetic?

Definition
Sympathetic
Term
Functions that parasympathetic regulates
Definition

Salivation

Lacrimal activities

Urination

Digestion

Defication

 

(SLUDD)

Term
The nerves that regulate the heart are...
Definition

Vagus nerve (parasympathetic)

 

Cardiac nerve (sympathetic)

Term
Axons that are myelinated in the ANS.
Definition
Preganglionic axons
Term
Unmyelinated axons of the ANS.
Definition
Postganglionic axons
Term
Referred to as the thoracolumbar division of the ANS.
Definition
Sympathetic
Term
Referred to as the craniosacral division of the ANS.
Definition
Parasympathetic
Term
Nerve fibers of the sympathetic division of the autonomic nervous system originate in these segments of the central nervous system.
Definition
thoracic and lumbar regions of the spinal cord
Term
Nerve fibers of the parasympathetic division of the autonomic nervous system originate in these segments of the central nervous system.
Definition
Brain stem and sacral region of spinal cord
Term
Neurons that are exclusively cholinergic neurons.
Definition

parasympathetic preganglionic

parasympathetic postganglionic

sympathetic preganglionic

Term
are usually adrenergic neurons
Definition
sympathetic postganglionic
Term
Acetylcholine is always the neurotransmitter employed by these neurons
Definition

parasympathetic preganglionic

parasympathetic postganglionic

sympathetic preganglionic

Term
Norepinephrine is usually the neurotransmitter employed by
Definition
Sympathetic postganglionic neurons
Term
_______________ stimulation leads to dilation of the pupils of the eyes and _______________ stimulation leads to constriction of the pupils.
Definition

Sympathetic

Parasympathetic

Term
baroreceptors
Definition
detect changes in blood pressure in the walls of large arteries
Term
fatigue
Definition
decreased capacit to do work and the reduced efficiency of performance that normally follows a period of activity
Term
 brain areas that is the most important integrating center for autonomic nervous system functions
Definition
hypothalamus
Term
sympathetic division of the autonomic nervous system normally controls target cells with ____ receptors
Definition
nicotinic and muscarinic
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