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