Drugs Acting in ANS Parasympathetic System Flashcards
is a component of the peripheral nervous system that regulates involuntary process
ANS (Autonomic Nervous System)
ANS (Autonomic Nervous System)s a component of the peripheral nervous system that regulates involuntary process including:
- Heart Rate
- Blood Pressure
- Respiration
- Digestion
- Sexual Arousal
ANS contains 3 anatomically distinct divisions:
- Sympathetic
- Parasympathetic
- Enteric
“Fight or Flight”
SYMPATHETIC
Activates when the body needs to activate itself in the presence of extreme stress
SYMPATHETIC
Alpha, Beta Receptors
SYMPATHETIC
“Rest and Digest”
PARASYMPATHETIC
Functions when the body does not need to activate large group of muscles and hormones
PARASYMPATHETIC
Muscarinic, Nicotinic
PARASYMPATHETIC
Cranial Nerves with Parasympathetic System:
- III (Oculomotor Nerve)
- VII (Facial Nerve)
- IX (Glossopharygeal)
- X (Vagus)
Movement of the eye muscles, constriction of the pupil, focusing with the eyes & the position of the upper eyelid.
III (Oculomotor Nerve)
Works with other cranial nerves to control eye movements and support sensory functioning.
III (Oculomotor Nerve)
carries nerve fibers that control facial movement and expression.
VII (Facial Nerve)
carries nerves that are involved in taste to the anterior 2/3 of the tongue and producing tears (lacrimal gland)
VII (Facial Nerve)
It is one of the four cranial nerves that has sensory, motor, and parasympathetic functions.
IX (Glossopharygeal)
It originates from the medulla oblongata and terminates in the pharynx.
IX (Glossopharygeal)
It provides motor, parasympathetic and sensory information to your mouth and throat.
IX (Glossopharygeal)
Among its many functions, the nerve helps raise part of your throat, enabling swallowing.
IX (Glossopharygeal)
is the longest cranial nerve in the body, containing both motor and sensory functions in both the afferent and efferent regards.
X (Vagus)
The nerve travels widely throughout the body affecting several organ systems and regions of the body, such as the tongue, pharynx, heart, and gastrointestinal system.
X (Vagus)
produces a response by binding to a receptor on the cell.
Agonist
Agonists are either
hormones or neurotransmitters
opposes the action by binding to the receptor and blocks these receptors and renders them ineffective
Antagonist
Parasympathetic Nerves
- constrict pupils
- slow heartbeat
- constrict airways
- stimulate stomach activity
- inhibit glucose release
Sympathetic Nerves
- dilate pupils
- increase heartbeat
- relax airways
- inhibit stomach activity
- stimulate gluvose release
- secrete adrenaline
Parasympathetic Division
- pupils constrict
- salivation
- airways constrict
- heartrate slows
- stomach digests
- intestines digest
- bladder constricts
- reproductive system increases blood flow
Sympathetic Division
- pupils dilate
- saliva inhibited
- airways dilate
- heart rate increases
- stomach inhibits digestion
- liver releases glucose
- intestines inhibit digestion
- kidneys release adrenaline
- bladder relaxes
- reproductive system decreases blood flow
