Peripheral Nervous System Flashcards
nervous system outside the
brain and spinal cord
Peripheral Nervous System
primary role of the PNS
is to
connect the CNS to the organs,
limbs, and skin
The nerves in the PNS
extend from the
central nervous
system to the outermost areas of
the body
The _____________ is
the part of your nervous system
that works “automatically,”
without conscious thought
autonomic nervous system
The somatic nervous system
derives its name from the Greek
word soma, which means
Body
is the part of
the peripheral nervous system
responsible for carrying sensory
and motor information to and
from the central nervous system
Somatic Nervous System
AU T O N O M I C
N E R VO U S S Y S T E M consist of:
Sympathetic and Parasympathetic Nervous system
plays
a vital role in maintaining
cardiovascular health because of its
key effects on both short- and long term regulation of blood pressure and
blood flow to organs.
Sympathetic NS
This system activates body processes
that help you in times of need,
especially times of stress or danger.
This system is responsible for your
body’s
fight-or-flight response
•is responsible for calming you
down
•is a network of nerves
that relaxes your body after periods
of stress or danger
Parasympathetic NS
Parasympathetic NS also helps run life-sustaining
processes, like ________, during
times when you feel safe and
relaxed
digestion
Sympathetic vs Parasympathetic NS
Sympathetic: fight or flight response
Parasympathetic: rest and digest respons
form the central
nervous system, or CNS
Brain and spinal cord
acts as the control
center of the body by
providing its processing,
memory, and regulation
systems
Central Nervous System
is an extension of the brain
Spinal Cord
carries
messages to and from the brain via the network of
peripheral nerves connected to it
Spinal Cord
Nerves also connect the spinal cord to a part of the brain
called the
Brainstem
a soft, wrinkled organ that weighs about 3 pounds, is located
inside the cranial cavity, where the bones of the skull surround and
protect it
The Brain
The brain is responsible for integrating most _______________ both consciously and unconsciously.
sensory information and
coordinating body function
Complex functions such as __________ as well as regulation of
_________ are attributable to different parts of the brain.
thinking and feeling, homeostasis
