Transcript PowerPoint Presentation - The Nervous System: Chapter 9

Baseball
The Nervous System
1
• What are the
• What cells are
two major
the structural &
divisions of the
functional unit
nervous system? of the nervous
system?
– Answer:
Central &
Peripheral
– Answer:
Neurons
2
• The central
nervous system
is composed of
what organs?
– Answer:
Brain & Spinal
Cord
• What composes
the peripheral
nervous system?
– Answer:
Spinal and
Cranial Nerves
3
• What are the
specialized cells
that aid neurons
(by producing myelin &
helping
communication)?
– Answer:
Neuroglia
• What part of the
neuron is the
“receptive
surface”?
– Answer:
Dendrite
4
• Match the neuroglia with
• Where is the
nucleus located in it’s function.
•Phagocytosis
Microglia
the neuron?
•Support
– Answer:
Cell Body
Oligodendrocyte
•Form myelin like
Astrocyte
Schwann cells
Ependymal
•Form lining in
ventricles
5
• Identify the area
marked with an
arrow in the
picture to the
right.
– Answer:
Corpus callosum
6
• Identify the area
of the brain stem
marked with an
arrow in the
picture to the
right.
– Answer:
Pons
7
• Identify the area
of the brain
marked with an
arrow in the
picture to the
right.
– Answer:
Cerebellum
8
• Identify the
4 lobes of
the brain.
– Answer:
1. Occiptal
2. Parietal
3. Frontal
4. Temporal
1
2
3
4
9
• What is the
function of the
corpus callosum?
– Answer:
connects right &
left
hemispheres of brain
10
• Name the lobe &
match the function:
–
–
–
–
Hearing
Vision
Concentration
Understanding
speech
1
2
Temporal:hearing Parietal:
understanding
speech
3
4
Frontal:
concentration
Occiptal:
vision
11
• What part of
neuron is
indicated by the
arrow?
– Answer:
Dendrite
• What is the
function of this
portion of the
neuron?
– Answer:
main receptive
surface for
electrical
impulses
12
• What part of
neuron is
indicated by the
arrow?
– Answer:
Axon
• What is the
function of this
fiber?
– Answer: it
conducts
impulses away
from the cell
body
13
• What do the tiny
circles in the
space represent?
– Neurotransmitter
• What is the name of the
space between the 2
neurons?
– Answer: Synapse
14
• What part of an
action potential
is illustrated by
the red line?
– Answer:
Depolarization
15
• What is the
name of the
gaps between
Schwann cells?
– Answer:
Nodes of
Ranvier
• Grey Matter
or White
Matter, which
is myelinated?
– Answer:
White Matter
16
• Name that
structure
– Answer:
Pituitary Gland
17
• Which area is the
postsynapic
neuron, which is
presynapic?
• What structure is
located at the arrow?
– Answer: Mitochondrion
18
• What part of an
action potential
is illustrated by
the red line?
– Answer:
Repolarization
19
• What are the
layers of the
meninges from
innermost to
outermost.
– Answer:
Pia, Arachnoid,
Dura
• What area
forms
cerebrospinal
fluid?
– Answer:
Choroid Plexus
20
• Between which • Which has a
layers of the
lower
meninges is CSF conductivity for
found?
impulses, grey
or white matter?
– Answer:
Arachnoid and
Pia
– Answer:
Grey
21
• Name the type of •
fast conduction
when impulses
jump from node
to node (Ranvier)
– Answer:
Saltatory
Where is the
greatest
concentration of
Na+, inside or
outside axon?
– Answer:
Outside
22
• What is
happening
during this
phase?
– Answer:
Na+ rushes
in
23
• What is
happening
during this part
of the ap?
– Answer:
K+ rushing out
24