+
Role of the nervous system
The nervous system is the body's
primary adaptive and adjusting
mechanism.
+
The nervous system is responsible for
______________________________.
General Functions of the Nervous
System
Sensory Functions

Detect changes in situations which affect
the body. Including:



Changes in the external environment to
which an individual must ___________ or
_____________
Changes are detected through _________
_____________________________________
+_____________________________________
Changes in the _________________ of the
body or its parts
Motor Functions

Initiating and controlling the activities of
tissues which require a stimulus to
function

Coordinating the activity of individual
parts or systems with each other
+
Our Nervous System Overview
Nervous System
Central Nervous
System





Nerve cells that make up the
_________ and _______________
Receives messages from sensory
nerves throughout the body
Filters,
interprets and analyses
+
sensory messages
Determines the necessary
responses
Sends signals along motor
nerves to produce an
appropriate response (electrical
impulse)
Parts of Central Nervous
System
The Brain
The brain is the ____________ and __________
+ the nervous system
center of
 Receives messages from the spinal cord and
12 pairs of cranial nerves which come from
the senses and organs
 Develops appropriate responses and sends
out messages through motor neurons
CNS & The Brain
1. ___________
2. ___________
1. ___________
+
The Brain: ______________
 Largest part of brain (____%)
 _______________________________________
+
 _______________________________________
 _______________________________________
 Regulates higher forms of nervous activity for
sensation, learning, judgment, behavior,
perception, emotion, recognition and
communication
 Allows voluntary movement of muscles
The Brain: Cerebrum
+
This diagram shows the break down of the cerebrum and what
area’s are responsible for analyzing stimulus from specific regions
in the body.
The Brain: _______________
Plays an important role in complex
reflex movements
 Receives stimuli from the cerebrum and
+ which ___________________________
determines
 Serves as the coordinating center for motor
activity.
 Determines which ___________________ and the
_______________________ of the contractions.
 Coordinates the organs of balance and receptors in
the muscles, tendons and joints.
The Brain: Brain Stem
Connects the Brain to the Spinal Cord
Responsible for critical involuntary body functions:
+
 _________________
 _________________
 _________________
CNS and the Spinal Cord

Function: Transmit
electrical impulses to
and from the brain
regarding
 _______________
 _______________
 _______________
_______________

__________________:
Carry information
from the ________ to
the _________

__________________:
Carry information
from the _______ to
the ________
+
Peripheral Nervous System (PNS)
Made up of numerous nerves
which branch out from the CNS
in order to send messages to the
body.
+
The PNS is composed of…
1. _____________________(AN
S)
2. _____________________(SNS
)
+ PNS: Autonomic Nervous System



Nerve fibers which carry instructions from the CNS to
the body organs and glands
Controls _________________ functions in the body
 Heart rate, blood pressure, rate of breathing
Broken into two subsystems:
 Sympathetic:
 _________ or _________, prepares body for
_________________
 Orders release of _______________
 Parasympathetic: Rest and Digest, _____________
_______________________________________________
+
Autonomic Nervous System
+
PNS: Somatic Nervous System
Makes us aware of the external environment. It is
composed of…

___________ or __________ nerves which transmit
impulses __________ the periphery or environment
_______ the spinal cord or brain. They carry impulses
for the sensations.

___________ or ___________ nerves which extend
from the spinal column to muscle fibers. They
transmit impulses ________ the brain or spinal
column _______ the muscles or other structures that
respond to stimuli.
+ Putting It All Together…
+ Now Your Turn…
Stimulus
Inversion
Ankle Sprain
During a
Basketball
Game
PNS
_________
ANS
Response?
___________
___________
___________
SNS
Response?
___________
___________
___________
CNS
_________