Nervous System Divisions
Types of Neurons
Glial Cells/Functions
Action Potential
Brain Structures
100
This division includes the brain and spinal cord.
What is the Central Nervous System (CNS)?
100
These neurons carry information from sensory receptors to the CNS.
What are sensory (afferent) neurons?
100
These glial cells produce myelin in the CNS.
What are oligodendrocytes?
100
The resting membrane potential of most neurons is approximately this value.
What is -70 mV?
100
This structure controls balance and coordination.
What is the cerebellum?
200
A person touches a hot stove and immediately pulls their hand away before feeling pain. This response is primarily coordinated by this structure of the CNS.
What is the spinal cord?
200
These neurons carry signals from the CNS to muscles or glands.
What are motor (efferent) neurons?
200
These cells form the blood-brain barrier and provide structural support in the CNS.
What are astrocytes?
200
This ion rushes into the cell during depolarization.
What is sodium (Na⁺)?
200
This lobe is primarily responsible for vision.
What is the occipital lobe?
300
This division of the peripheral nervous system controls voluntary skeletal muscle movement.
What is the somatic nervous system?
300
When you step on a tack, this type of neuron first detects the pain stimulus.
What is a sensory neuron?
300
A patient with multiple sclerosis experiences loss of myelin in the CNS. These cells are damaged.
What are oligodendrocytes?
300
A toxin blocks voltage-gated potassium channels. Which phase of the action potential would be directly affected?
What is repolarization?
300
Damage to this area of the frontal lobe results in difficulty producing speech.
What is Broca’s area?
400
A student’s heart rate increases before giving a presentation. This division is responsible.
What is CNS?
400
A neuron with many dendrites and one long axon is shown.
What is a multipolar neuron?
400
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What is an astrocyte?
400
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What is Action Potential
400
Identify
What is the pituitary gland?
500
What is the central nervous system?
500
A neuron located entirely within the spinal cord connects a sensory neuron to a motor neuron in a reflex arc.
What is an interneuron?
500
A researcher studies a glial cell that wraps around axons in the PNS to form myelin.
What are Schwann cells?
500
If a neuron fails to reach threshold, what happens to the action potential?
What is no action potential occurs (all-or-none principle)?
500
A patient cannot form new long-term memories after a traumatic brain injury. This structure is likely damaged.
What is the hippocampus?