Transcript The Peripheral Nervous System

Aim: What are the parts and function of the
Human Peripheral Nervous System?
I. Peripheral Nervous System – consists of all the
nerves of all types that branch through the body
from the central nervous system.
A. The PNS has two main divisions
1. Somatic Nervous system – includes the
nerves that control the voluntary actions of
the skeletal muscles (biceps, triceps, quads
and etc.)
2. Autonomic Nervous System – consists
of nerves regulating automatic functions
such as the actions of glands and
involuntary muscle (intestines, blood
vessels, heart muscle).
a. Sympathetic nervous system – involved in “fight
or flight” response. Increases heart beat and also
causes hormones such as adrenaline to be
released.
b. Parasympathetic Nervous System – has the
opposite effect of the sympathetic nervous
system. Known as the “rest and digest”
system. It helps conserve energy by slowing
down the heartbeat and increases digestion.