Basics in the ANS
What are the two main divisions of the autonomic nervous system?
Sympathetic and parasympathetic
Where do sympathetic nerves exit the spinal cord?
The thoracic and lumbar regions
What is the nickname for the parasympathetic division
rest and digest
What is the sympathetic effect on the heart
increased heart rate and force of contraction
Which part of the nervous system controls involuntary functions
Autonomic nervous system
What is the nickname for the sympathetic division?
Fight or flight
What cranial nerve carries most of the parasympathetic output
Vagus nerve
what is the parasympathetic effects on the lungs (bronchi)
what is bronchoconstriction
Where are autonomic reflex centers primarily located?
Hypothalamus, brainstem (medulla oblongata), and spinal cord
What happens to the pupils during sympathetic activation?
What is dilation (mydriasis)
What is the effect of parasympathetic stimulation on heart rate?
Decreased heart rate
What effect does the sympathetic system have on digestive activity
decreased motility and secretions