WSU Bio 315 Lecture Exam 2 Johnson
with correct answers 100% 2026
What are the components of the central and peripheral nervous systems? - Correct Answer
Neurons and Supporting Cells
What are the supporting cells of the central nervous system? - Correct Answer Neuroglia,
outnumbers neurons 10:1
What are are the types of supporting cells of the CNS? Functions? - Correct Answer Astrocytes-
Maintain blood brain barrier.
Microglia- For protection, contains phagocytes
Ependymal Cells- help produce CSF
Oligodendrocytes- Produce Myelin Sheaths
What are the supporting cells of the PNS? Functions? - Correct Answer Satellite Cells- surround
and protect sensory neuron cell bodies, suspend neurons.
Schwann Cells- produce myelin sheaths, one schwann cell=one myelin segment
What do myelin sheaths do? - Correct Answer Increase speed of AP impulse by 50 times
What are afferent neurons? - Correct Answer Sensory neurons that go TO the brain
What are efferent neurons? - Correct Answer Motor neurons that exit brain TO body
What are interneurons? - Correct Answer integrator neurons, they evaluate impulses for
appropriate response
, What are the general somatic senses? - Correct Answer Touch
Pain
Pressure
Temperature
What are the special somatic senses? - Correct Answer hearing, balance, vision, smell
What are the general visceral senses? - Correct Answer Stretch
Pain
Temperature
Nausea
Hunger
Chemical changes
What is the only special visceral sense? - Correct Answer Taste
What does the somatic motor system control? - Correct Answer Skeletal Muscle
What does the visceral motor system control? - Correct Answer Smooth and cardiac muscle,
secretion by glands
Different parts of a neuron? In order of how an impulse is conducted - Correct Answer
Dendrites > Cell Body > Axon Hillock > Axon > Axon Terminal
What is a multipolar neuron? - Correct Answer multiple processes, many dendrites and one
axon
with correct answers 100% 2026
What are the components of the central and peripheral nervous systems? - Correct Answer
Neurons and Supporting Cells
What are the supporting cells of the central nervous system? - Correct Answer Neuroglia,
outnumbers neurons 10:1
What are are the types of supporting cells of the CNS? Functions? - Correct Answer Astrocytes-
Maintain blood brain barrier.
Microglia- For protection, contains phagocytes
Ependymal Cells- help produce CSF
Oligodendrocytes- Produce Myelin Sheaths
What are the supporting cells of the PNS? Functions? - Correct Answer Satellite Cells- surround
and protect sensory neuron cell bodies, suspend neurons.
Schwann Cells- produce myelin sheaths, one schwann cell=one myelin segment
What do myelin sheaths do? - Correct Answer Increase speed of AP impulse by 50 times
What are afferent neurons? - Correct Answer Sensory neurons that go TO the brain
What are efferent neurons? - Correct Answer Motor neurons that exit brain TO body
What are interneurons? - Correct Answer integrator neurons, they evaluate impulses for
appropriate response
, What are the general somatic senses? - Correct Answer Touch
Pain
Pressure
Temperature
What are the special somatic senses? - Correct Answer hearing, balance, vision, smell
What are the general visceral senses? - Correct Answer Stretch
Pain
Temperature
Nausea
Hunger
Chemical changes
What is the only special visceral sense? - Correct Answer Taste
What does the somatic motor system control? - Correct Answer Skeletal Muscle
What does the visceral motor system control? - Correct Answer Smooth and cardiac muscle,
secretion by glands
Different parts of a neuron? In order of how an impulse is conducted - Correct Answer
Dendrites > Cell Body > Axon Hillock > Axon > Axon Terminal
What is a multipolar neuron? - Correct Answer multiple processes, many dendrites and one
axon
