Final Review: Autonomic Nervous System Flashcards
Which type of neuron (pre/post-ganglionic) has myelinated axons, secretes ACh only, and has cell bodies located within the CNS?
Preganglionic neurons
Which type of neuron (pre/post-ganglionic) has non-myelinated axons, secretes ACh & norepinephrine, and has cell bodies located in peripheral ganglia?
Postganglionic neurons
Where in the spinal cord do the cell bodies of sympathetic preganglionic neurons lie?
Intermediolateral horn
What type of fibers make up 8% of fibers in nerve, are type C, pass through gray rami, & control blood vessels, sweat glands, & piloerector muscles?
Postganglionic sympathetic fibers
Where do greater splanchnic nerves come from in the spinal cord and where do they synapse?
T5-9.
Celiac ganglion
Where do lesser splanchnic nerves come from in the spinal cord and where do they synapse?
T10-11.
Superior mesenteric ganglion
Where do least splanchnic nerves come from in the spinal cord and where do they synapse?
T12.
Aorticorenal ganglion
Where are about 75% of all parasympathetic nerves?
In the vagus nerve
T/F: Most preganglionic fibers travel all the way to the organ that is to be innervated.
True
Postganglionic parasympathetic fibers use which neurotransmitter?
ACh
Postganglionic sympathetic fibers use which neurotransmitter?
Norepinephrine
What nerve carries general sensation and sensation from posterior 1/3 of tongue?
Glossopharyngeal
The preganglionic portions of the glossopharyngeal nerve go from the _____ to the _____.
Inferior salivary nucleus
Otic ganglion
The postganglionic portions of the glossopharyngeal nerve go to the _____.
Parotid gland
80% of the norepinephrine in the adrenal medulla is methylated to form _____.
Epinephrine
What amino acid is used to begin the formation of norepinephrine?
Tyrosine
Where does reuptake of norepinephrine take place?
Glial cells
Removal of norepinephrine via destruction by monamine oxidase is present where?
Nerve endings
Removal of norepinephrine via destruction by catechol-O-methyl transferase is present where?
All tissues
What receptor is found in autonomic ganglia at synapses between pre and post-ganglionic neurons and in neuromuscular junctions?
Nicotinic
Which adrenergic receptor causes cardioacceleration, increased myocardial strength, and lipolysis?
Beta1
Which adrenergic receptor causes thermogenesis?
Beta3
Which adrenergic receptor causes vasodilation, relaxation, bronchodilation, & glycogenolysis?
Beta2
Which drug blocks synthesis and storage of norepinephrine?
Resperine
Which drug blocks release of norepinephrine?
Guanethidine
Which drug blocks sympathetic alpha recetpors?
Phenoxybenzamine/phentolamine
Which drug blocks sympathetic beta1 & beta2 receptors?
Propranolol
Which drug blocks mostly sympathetic beta1 receptors?
Metoprolol
Which drug blocks transmission through autonomic ganglia?
Hexamethonium
