PAIN PATHWAY PART 2: THE BASIC NERVOUS SYSTEM STRUCTURE AND FUNCTION

1. The Nervous System
pain pathways Part 2:
the Function and structure of
By Karen Riffel

2. Function:
Recognize and respond to stimuli
Controls all body activity
None of the other systems function without
this system

3. Nervous System
Central Nervous System (CNS) Peripheral Nervous system (PNS)
Two parts of the: nervous system CNS & PNS
Main Control: Brain & Spine Communication: puts your brain in touch
with your surrounding environment &
allows it to respond to
stress, danger & damage

4. Made up of specialized:
Nerve cells & sensory Neurons (neuron clusters)Glial cells

5. Nervous System
Sensory Integration Motor Neurons
SenSory receptor “ feel pain ”
stimulus Monitor Change
inside & outside of body
“What to do?”
Out Put- Supply Response by
activating muscle or gland
body part reaction
CNS and brain
Process & interpret
sensory input
Decide what to do
Pain signal :

6. Central Nervous System
(CNS)
The Peripheral Nervous system
(PNS)
Sensory (afferent) division Motor (efferent) division
Somatic nervous system
Autonomic nervous system
Sympathetic division
Parasympathetic division
Brain, Spinal cord & Nerves
Integrative & Control centers
Sensory neurons, glial (neuron
clusters) & Nerves
Communicate through nerve branches
between cns & the rest of body
motor nerve fibers
Conducts impulses from CNS to
effectors (muscles & glands
Somatic motor (voluntary)
Conducts impulses from
CNS to skeletal muscles
Visceral motor (involuntary)
Conducts impulses from CNS
to Cardiac muscles,
smooth muscles & glands
Mobilizes body systems
during “ fight or flight”
Fires you up
Conserves energy
promoteS “houSekeeping” functionS
During rest, calms
Somatic & Visceral sensory
nerve fibers
Picks up sensory stimuli
Conducts impulses from
receptors to the CNS
Function
Structure
Cns & PNS

7. The Nervous System CellsBy Karen Riffel
pain pathways Part 3:
the basic Function and structure of
Now that you have an understanding of
the break down of the Function and structure
of the nervous system,
For a deeper understanding of the cells that
transmit responses to stimuli along the
pathways of pain in Nervous system Check out