Major Peripheral Nerves Flashcards
What is the somatic nervous system?
Part of the nervous system concerned with all parts of the body except smooth muscle and glands
What type of movements is the somatic motor system responsible for?
Voluntary and reflexive
What is the autonomic nervous system?
Part of the nervous system concerned with involuntary regulation of smooth and cardiac muscle and glands
What is the role of the motor component of the autonomic nervous system?
Control smooth muscle contractions
What is the role of the sensory component of the autonomic nervous system?
Provide feedback to CNS for fine control of motor component
What are the two divisions of the autonomic nervous system?
- Parasympathetic
2. Sympathetic
What is the roleof the parasympathetic nervous system?
Regulate the functional activities of smooth muscle and glands
What 3 things does the parasympathetic nervous system do?
- Slows heart rate
- Increases peristalsis
- Opens gut sphincters
What is the role of the sympathetic nervous system?
Prepare body for stressful situations
What 3 things does the sympathetic nervous system do?
- Pupils dilate
- Heart rate increases
- Respiration rate increases
What is the major anatomical difference between the parasympathetic nervous system and the sympathetic nervous system?
The location of their central connections
Where is the location of the central connections of the parasympathetic nervous system?
Originates in the cranial or sacral nerves
Where is the location of the central connections of the sympathetic nervous system?
Sympathetic trunk which travels in a downward direction from the skull, lateral to the vertebral bodies
What is the name of cranial nerve 1?
Olfactory
What is the name of cranial nerve 2?
Optic