Nervous System Review
What is the function of
the nervous system?
Regulation
To regulate (control) all body
processes.
A change in the outside environment that
starts an impulse along a neuron is
known as
1. a stimulus
2. a response
3. an impulse
4. a synapse
A student accidentally places her
hand on a tack and quickly
pulls her hand away. The tack
represent
1. a stimulus
2. an impulse
3. a response
4. an effector
A student accidentally places her
hand on a tack and quickly
pulls her hand away. Her skin is
the
1. impulse
2. response
3. effector
4. receptor
A student accidentally places her hand
on a tack and quickly pulls her hand
away. The muscles in her arm that
enabled her to pull her hand away
are the
1. impulses
2. responses
3. effectors
4. receptors
When a child runs to his mother after
hearing a clap of thunder, the clap of
thunder would serve the nervous system
role of acting as a(n)
1. stimulus
2. response
3. effector
4. receptor
A child runs to his mother after hearing a
clap of thunder. He jumps into his
mothers arms. The effectors would be
1. the stimulus
2. skin on his fingers
3. muscles in his legs
4. his ears
Adding one drop of dilute hydrochloric
acid to the water surrounding a hydra
caused the hydra to contract. The acid
acted as
1. a response
2. a stimulus
3. a neurotransmitter
4. an impulse
1. A muscle or gland which responds to a message carried
to it by motor neurons is called a(n) _______.
effector
2. A change in the surroundings or the environment that
triggers a nerve impulse is called a(n) stimulus
_____.
3. The electrochemical message that travels through the
impulse
nervous system is known as the _________.
4. A change in the external environment that initiates
impulse
(starts) an impulse is called a _______.
5. Nerve cells are called __________.
neurons
Neuron Structure
myelin
1. Most axons are covered with ___________
which aids
impulse transmission by improving electrical
insulation.
2. Dendrites
___________ receive the impulse from the previous
neuron.
axon
3. The longest part of a neuron is the ______.
4. The ____________
contains the nucleus and other cell
cell body
organelles.
5. The part of the neuron that produces and releases
neurotransmitters are the ____________.
terminal branches
receptors on the next
6. Neurotransmitters attach to __________
neuron.
How does an impulse travel
from one neuron to the next?
Neurotransmitters are released
into the synapse.
A structure that detects stimuli
is a
a) effector
b) synapse
c) receptor
d) muscle
Synapses are located directly
between
(1.) dendrites and axons
(2.) cytons and axons
(3.) terminal branches and
dendrites
(4.) axons and terminal
branches
Neuron Review
1.
2.
3.
4.
5.
6.
7.
8.
9.
Identify the name of nerve cells. Neurons
Dendrites
Identify the part of the neuron that receives the impulse.
Identify the largest part of a neuron. Cell body
Identify the long part of the neuron. Axon
Identify the structures that can wrap around the axon to
speed up impulses. Schwann cells
Identify the last part of the neuron that send the impulse to
the next neuron. Terminal branches
Identify the space between 2 neurons. Synapse
Identify the chemical that is secreted into the synapse.
Neurotransmitters
Identify the structures that neurotransmitters attach to
on the next neuron. Receptors
What does this picture
represent? Central Nervous System
1. Sensory neurons transmit impulses from
the _________
receptors to the ________________.
spinal cord (CNS)
2. Interneurons carry impulses from the
_____________
sensory
neurons to ____________.
motor neurons
3. Motor neurons carry impulses from the
spinal
cord to ___________.
__________
effectors
Sensory neurons transmit messages
a) from the central nervous system to a
muscle a gland
b) from the brain to the spinal cord
c) from the environment to the spinal
cord or brain
d) within the brain
e) All of the above are true.
What structures make up your
central nervous system?
Brain and Spinal Cord
Neurons that carry messages
toward the CNS (brain and
spinal cord) are called
sensory neurons
Why are reflexes much
faster than a normal
response?
The impulse only travels to the spinal
cord, not the brain.
Identify structures A, B and C.
motor
neuron
B
Receptor
interneuron
A
sensory
neuron
X
A B
The diagram represents a neuron.
1.Identify structure X. Axon
Terminal branch
2.Identify the enlarged structure in the dotted area.
3.Identify structure A.Neurotransmitter
4.Identify structure B. Receptor