Autonomic Nervous System Drugs Flashcards
(20 cards)
The _____ nervous system tells the body to get ready for physical and mental activity.
Sympathetic
What is the ANS?
A component of the peripheral NS that regulates involuntary physiologic processes including heart rate, blood pressure, respiration, digestion, and sexual arousal
What are the three anatomically distinct divisions are there in the ANS?
Sympathetic, parasympathetic, and enteric
What types of fibers do both the SNS and PNS contain?
Afferent and efferent fibers that provide sensory input and motor output, respectively, to the CNS
It’s a neuron that sends impulses to the central nervous system (CNS).
Afferent neuron
Alpha 1
Alpha 2
Beta 1
Beta 2 is called?
Four receptor organ cells
Sympathetic nervous system
It can
Dilates pupil
Dilates bronchioles
Increase heart rate
Constrict blood vessels
Relaxes smooth muscles of the GI
Relaxes uterine muscles
Agonist drug
A Drugs that produce a response
It’s a drug that blocks a response
Antagonist drug
Define the Parasympathetic nervous system
It has the capability to
Constrict pupils.
Contracts bronchioles, and increase secretion.
Decrease heart rate
Dilates blood pressure
Increases peristalsis
Increases salvation
Describe the outflow of the ANS
Projects widely to most target tissues and is not as highly focused as the somatic motor system
What are the divisions of the ANS?
Sympathetic -Thoracolumbar
Parasympathetic -Craniosacral
Has a catecholamine and amines
CATECHOLAMINES
Sympatheic innervation effects
Increases heart rate and force of contraction
Decreases heart rate
Parasympathetic innervation effects
What nerves belong to the Somatic Nervous system?
Somatic sensory neuron and somatic motor neuron
It’s a neuron that receives impulses and transmits them through the spinal cord to the effector organ cell.
efferent neurons
PNS ( Peripheral nervous system )
Except in the brain and spinal cord, all the remaining nerves in other parts of the body
What is the terminal neurotransmitter of the parasympathetic nervous system?
Acetylcholine
What are the steps for synaptic transmission?
-The neuronal impulse travels down the presynaptic axon to the axon bulb.
-Synaptic vesicles fuse with the axon bulb plasma membrane releasing neurotransmitters.
-The neurotransmitter is released into the synaptic cleft.
-Neurotransmitter bind to receptors on the postsynaptic neuron.
-Sodium ion channels open and the ions enter the postsynaptic neuron
