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AutonomicReview
Short Review of the Autonomic Nervous System
| Question | Answer |
|---|---|
| What does the peripheral nervous system (PNS) consist of? | all the neurons and ganglia outside of the CNS |
| Afferent neurons | sensory- from periphery to CNS |
| Efferent neurons | motot-from CNS to PNS |
| What are the 2 main neurotransmitters of the ANS? | acetylcholine and norepinephrine |
| What does the autonomic nervous system do? | without conscious effort controls involuntary activities in smooth muscle, secretory glands and visceral organs. |
| What are cholinergenic fibers? | nerves that secrete acetylcholine |
| What type of effects does acetylcholine cause on body organs and tissues? | parasympathetic affects |
| What are adrenergic fibers? | Fibers that secrete norepinephrine |
| What type of effect does norepinephrine have on the organs and tissues? | A sympathetic effect |
| Stimulation of the ANS can be what? | Either sympathetic or parasympathetic |
| What are ligands? | Neurotransmitters, meds, or hormones that bind to receptors |
| What is a ligand that bind to a receptor called? | A first messenger |
| What does the ligand-receptor combo then activate? | A cell-membrane bound protein. An effector enzyme that activates molecule inside the cell (that is referred to as the 2nd messenger). |
Created by:
cspearsall
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