Chapter 5 : Autonomic nervous system

Parasympathetic stimulation causes

A decrease in heart rate and atrioventricular conduction

Sensory information travels from the peripheral organs to the brain and spinal cord through

Afferent nerves

Muscannic agonist = Cholinergic = Anti- sympathetic

CNS will experience procognitive Heart Will experience brachycardia Urinary track experience bladder contraction G.I. track will increase peristalsis Exocrine glands increased secretions Eye will experience miosis Airway will become bronchconstriction

CN X (PNS)

Dorsal vagal nucleus ( secretions in G.I. tract/lungs)

In the context of the autonomic nervous system, what explains how the body can both increase and decrease the activity of an organ?

Dual autonomic innervation allows both the increase and decrease in functions of an organ

CN III (PNS)

Edinger-Westphal Nucleus ( miosis+ accommodation )

parasympathetic nervous system

Functions to control involuntary visceral body functions; cranial nerves three, seven, nine and 10 to sacral nerves

CN IX (PNS)

Inferior Salivary nucleus ( salivation in parotid gland )

Receptors M1, M4, M5

Located in the CNS Agonist action: Precognitive Antagonist action: Anticognitive

Receptor M2

Located in the Heart Agonist action : Bradycardia Antagonist: Tachycardia, Av node conduction

Receptor M3

Located in the urinary track, GI track, Exocrine glands, Eye, Airway Agonist action: bladder contraction Antagonist action: bladder relaxation

Acetylcholine

Major neurotransmitter in the PNS

afferent neurons

Nerve cells that carry impulses towards the central nervous system

Acetylcholine ( ACH) Is the Neurotransmitter;

Of the parasympathetic nervous system

When the body is at rest, which nervous system is active?

Parasympathetic nervous system

CN VII (PNS)

Superior Salivary nucleus ( salivation in lacrimal gland)

Muscannic anatagonist = Anticholinergic = Sympathetic

The CNS be anticognitive The heart will experience tachycardia, AV node conduction Urinary track will experience bladder relaxation G.I. track will lessen peristalsis Exocrine glands well lessen secretions Eye will dilate ( Mydriasis ) Airway will experience bronchodilation

This is true of the central nervous system

The CNS initiates appropriate motor response via the peripheral efferent nerves

The following statement is true regarding internal organs and glands

The autonomic nervous system regulates them and they are under involuntary or unconscious control

Dual autonomic innervation refers to

The presence of both parasympathetic and sympathetic nerves in an organ

The fight or flight reaction is caused by the activation of

The sympathetic division of the autonomic nervous system

Norepinephrine is associated with

The sympathetic nervous system

Identify a difference between parasympathetic nerves and sympathetic nerves

Unlike sympathetic nerves, parasympathetic nerves do not innervated many blood vessels

autonomic nervous system (ANS)

a set of nerves that carries involuntary and automatic commands by way of two sub systems called. Sympathetic and parasympathetic that work opposite of each other.

CNS (central nervous system)

consists of the brain and spinal cord

sympathetic nervous system

fight or flight system; Alpha, Beta receptors

efferent neurons

neurons that take information from the brain to the rest of the body

craniosacral outflow

the axons of the parasympathetic preganglionic neurons, cranial nerves 3,7,9 and 10 and sacral nerves

parasympathetic nervous system

the division of the autonomic nervous system that calms the body, conserving its energy; Rest and digest state. Muscarinic, Nicotinic receptors

PNS (peripheral nervous system)

the sensory and motor neurons that connect the CNS to the rest of the body