Chapter 7 Flashcards
(47 cards)
Two parts of autonomic nervous system
Sympathetic and Parasympathetic
What part of autonomic nervous system is excitatory to targets and increases cellular functions?
Sympathetic nervous system
What part of autonomic nervous system is inhibitory to targets and decreases cellular functions?
Parasympathetic nervous system
Axon of pre synaptic to dendrites of post synaptic cell
Ganglion
Region sympathetic occurs at
Thoraco-lumbar
Region parasympathetic occurs at
Cranial-Sacral
Receptor that binds Ach
Cholerinic
Cholerinic receptor with Na+ channels, located on post ganglionic neurons
Nicotinic Receptor
Cholerinic receptor, changes second messengers, reduction/inhibition of specific cellular function
Muscarinic Receptor
Post ganglionic cells release this onto target for sympathetic nervous system
Norepinephrine (NE)
Post ganglionic cells release this onto target for parasympathetic nervous system
Acetylcholine (Ach)
Released by preganglionic neuron onto postganglionic for both systems
Acetylcholine (Ach)
Receptor on postganglionic cells for both systems
Nicotinic receptors
What is always excitatory to post-ganglionic cells?
Acetylcholine
System with 1st neuron short, 2nd long
Sympathetic
System with 1st neuron long, 2nd short
Parasympathetic
What hormones augment sympathetic nervous system?
Norepinephrine and epinephrine
What do adrenergic receptors bind?
Norepinephrine and epinephrine
Adrenergic receptor that is on most sympathetic targets, excitatory, and binds NE>Epi
Alpha 1
Adrenergic receptor that is excitatory, and binds NE=Epi, raises heartrate by force of contraction
Beta 1
Adrenergic receptor that is inhibitory, relaxes smooth muscle, binds Epi»>NE
Beta 2
Molecule that binds a receptor
Ligand
Ligand made by body
Endogenous
Ligand as a drug, not made by body
Exogenous