19 Questions
What is the main function of the sympathetic division of the autonomic nervous system?
Initiating the fight or flight response
Where do sympathetic signals come from in the thoracolumbar system?
Thoracic and superior lumbar nerves
Where does a preganglionic fiber travel from in the sympathetic division?
Spinal cord to sympathetic ganglion
Which part of the autonomic nervous system receives direct connection from preganglionic fibers to release molecules?
Adrenal medulla
What is the function of the parasympathetic division of the autonomic nervous system?
Promoting rest and digest activities
How many ganglia are there on each side of the spinal cord in the sympathetic chain ganglia?
23 ganglia
What type of fiber is a postganglionic fiber in the sympathetic division?
Long and unmyelinated
What does a preganglionic fiber have direct connection with in the sympathetic division?
Adrenal medulla
What is the primary role of the divisions of the autonomic nervous system?
Maintain homeostasis
Which type of synapse involves the release of norepinephrine to either an alpha receptor or a beta receptor?
Adrenergic
What is the role of the enteric nervous system?
Conducting long reflexes in the digestive organs
What would be the heart rate without the parasympathetic signal to slow it down?
100 bpm
Which part of the brain is responsible for emotion and memory function?
Limbic lobe
Which type of drug enhances adrenergic function by binding to receptors and increasing norepinephrine production and release?
Phenylephrine
What is the main effect of sympatholytic drugs?
Blocking adrenergic function
Which central structure receives much input from the hypothalamus and is involved in regulating cardiovascular function?
Medulla
What does nicotine do in the autonomic nervous system?
Depolarizes all nicotinic receptor synapses without ACh present
What is the conscious perception of autonomic sensation called?
Referred Pain
What type of synapse involves Ach released to either a nicotinic receptor or a muscarinic receptor?
Cholinergic
Explore the divisions of the Autonomic Nervous System (ANS) and their roles in maintaining homeostasis. Learn about the sympathetic division's fight or flight response and the parasympathetic division's rest and digest functions. Understand how organs and systems receive input from each division.
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