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Chapter 13- PNS
Physiology of PNS
Question | Answer |
---|---|
Divisions of the nervous system: | Central nervous system (CNS) Peripheral nervous system (PNS) |
Divisions of the peripheral nervous system: | (1) the somatic motor system and (2) the autonomic nervous system. |
Divisions of the autonomic nervous system: | Parasympathetic and Sympathetic |
What does the somatic nervous system control? | The somatic nervous system controls voluntary movement of muscles. |
Main functions of the autonomic nervous system: | (1) regulation of the heart; (2) regulation of secretory glands and (3) regulation of smooth muscles. |
What are funtions of the parasympathetic nervous system? | •Slowing of heart rate •Increased gastric secretion •Emptying of the bladder |
Funtions of the parasympathetic nervous system: | •Emptying of the bowel •Focusing the eye for near vision •Contracting bronchial smooth muscle •Constricting the pupil |