The document summarizes key concepts about the nervous system including: - The peripheral nervous system branches from the spinal cord and supplies the body, while the central nervous system controls involuntary functions. - There are five major types of glial cells in the nervous system that serve supporting functions like insulation or protection. - There are three main types of neurons - multipolar, bipolar, and unipolar - which differ in their dendrite and axon structures. - Nerve impulses involve changes in the resting membrane potential and generation of an action potential for signal transmission between neurons. - The synapse is the gap between neurons where neurotransmitters are released to transmit signals across to the next neuron

2. Organization of the Nervous system
Match the word with the picture and definition
WORD PICTURE DEFINTION
branch off from your
Peripheral Nervous spinal cord and
System (PNS) supply the rest of
your body.
this system is
responsible for the
Central Nervous
bodily functions
System (CNS)
which are not under
conscious control

3. Organization of the Nervous system Cont.

4. Organization of the Nervous system Cont.

5. Organization of the Nervous system Cont.

6. Organization of the Nervous system Cont.

7. Cells of the nervous System
Match the five major types of glia word to where to find them in the
body
word defection
1. Astrocytes Lie clustered around nerve cell bodies
2. Microglia Only in the peripheral nervous system
3. Ependymal cells Stationary cells found in the central
nervous system
4. Oligodendrocytes Found only in the central nervous
system
5. Schwann cell Forming thin sheets that line fluid-
filled cavities in the brain and spinal
cord.

8. Cells of the nervous System
There are three types of neurons do you know their functions and
what they look like?
functions word picture
Neuron with only 1. Multipolar
one extension
from the cell body
Neuron with only 2. Bipolar
one axon but
several dendrites
Neuron with only 3. Unipolar
one dendrite and
only one axon

9. Nerve Impulses
Match the world with the picture and definition
World Picture Definition
When the
membrane potential
of a cell can go for
Resting a long period of
Membrane time without
Potential changing
significantly, it is
referred to as a
resting potential or
resting
The difference in
Membrane electrical potential
Potential between the interior
and the exterior of a
biological cell.

10. Nerve Impulses
Can you tell the difference between the two potentials? Match them
and find out.
world Definition
Is a term suggests,
Local potential the membrane
potential of an active
neuron, that is, one
that is conduction an
impulse
A slight shift away
Action potential from the Rmp in a
specific region of the
plasma membrane is
often called

11. The Synapse
Match the world with the definition
is a minute gap between nerve
A Depends on a number
cells which transmits crucial
Synapse of factors, including
information through the nervous
how much
system. The goal of this network
neurotransmitter is
is to perform a similar "synaptic"
released and the action
function between biology
of the neurotransmitter
instructors of all levels and
on the post-synaptic
locations.
neuron.
Neurotra Chemicals released Summation
nsmitters from one neuron at the
presynaptic nerve
terminal.

12. DATA
30
25
20
Time of muscle
15 contraction (s)
Time of stimulus
10 (s)
5
0
Kick 1 Kick 2 Kick 3 Kick 4 Kick 5

13. DATA
16
14
12
10
Time of muscle
8 contraction (s)
6 Time of stimulus
(s)
4
2
0
Kick 1 Kick 2 Kick 3 Kick4 Kick 5

14. Data Analysis- lab answers
1. the voluntary, when he could see the reflexor about to hit his
knee, had a singificantly faster reaction time than when could not
see the relexor, and only hear it, the average time it took him to
react to the involuntary stimulus was .458 seconds, where the
voluntary reaction took only an average of .028 seconds.
2.The speed that travels from the patellar tendon to the spinal cord
and back to the quadriceps muscle is 0.08.1m/s
3. the distance was short so the reachtion was faster to respond
4. the speed of the copper wire is 3000000 times faster than the
nerve impulse.
5. Yes, individual difference can attributed to any physical
difference (body shape/size, muscle mass, physical fitness level)