WorksheetsStructure of the Nervous System
Total questions: 24
Worksheet time: 17mins
Three function of the neurons:
Maintaining hemostasis
Gather information
Interpret the information
React to it
What does the neurons impulses?
Electrical impulses
Hormones
Sugar
Energy
What is the three main regions of neuron?
Dendrites
Cell body
Axon
Nucleus
Which part of the neuron receive signals and conduct the impulses to the body ?
Dendrites
Cell body
Axon
Axon ending
where can you find cell organelles ?
cell body
cell membrane
cell wall
which part of neurons carries the nerve impulse from the cell body to other neurons and muscles ?
dendrites
cell body
axon
what is the three kinds of neurons ?
sensory neurons
interneurons
motor neurons
reflex neurons
what is the function of sensory neurons ?
send impulses to the brain and spinal cord
carry the impulse to motor neurons
carry the impulses away from brain or spinal cord to a gland or muscle
what is the function of motor neurons ?
send impulses to the brain and spinal cord
carry the impulse to motor neurons
carry the impulses away from brain or spinal cord to a gland or muscle
what is the function of interneurons?
send impulses to the brain and spinal cord
carry the impulse to motor neurons
carry the impulses away from brain or spinal cord to a gland or muscle
what is a nerve pathway that consists of a sensory neuron,an interneuron, and a motor neuron that the brain is not involved ?
reflex arc
neuron
threshold
neurotransmitter
which of this is the basic structure of the nervous system ?
brain
nerve
reflex arc
impulse
a nerve impulse is an _____ traveling the length of a neuron.
electrical charge
protein
impulse
When a neuron is at rest, as shown in Figure,it is not conducting an impulse.
more sodium ions (Na+) outside
more potassium ions (K+)—inside
more sodium ions (Na+) inside
more potassium ions (K+)—outside
what is the another name of nerve impulse ?
action potential
synapse
cell body
neurotransmitter
a stronger stimulus does generate a stronger action potential.
true
false
what is “all or nothing” meaning ?
that a nerve impulse is either strong enough to travel along the neuron or it is not strong enough.
that a nerve impulse is weak or strong to travel along the neuron or it is not strong enough.
the minimum stimulus to cause an action potential to be produced is a _____ .
threshold
action potential
dendrite
reflex arc
charge moves like a ___ along the length of the axon
wave
curve
what is the lipid hat covers the axons ?
phospholipid
myelin
amino acid
what is the function of myelin ?
allows action potential to jump from node to node,increasing the speed of the impulse as it travels the length of the axon.
blocking action potential from jump from node to node, decreasing the speed of the impulse as it travels the length of the axon.
Sodium ions and potassium ions cannot diffuse
through it .
which two sentence is not true ?
Neurons with myelin carry impulses that are associated with sharp pain
neurons with myelin carry impulses associated with dull, throbbing pain.
Neurons that lack myelin carry impulses that are associated with sharp pain
neurons that lack myelin carry impulses associated with dull, throbbing pain
what is synapse ?
A small gap exists between the axon of one neuron and the dendrite of another neuron.
is a chemical that diffuses across a synapse and binds to receptors on the dendrite of a neighboring neuron.
The minimum stimulus to cause an action potential to be produced
is a nerve pathway that consists of a sensory neuron
There are more than ____ known neurotransmitters.
52
25
24
42
