WSU BIO 315 LECTURE EXAM 2
JOHNSON QUESTIONS AND ANSWERS
What are the components of the central and peripheral nervous systems? - Correct
Answers -Neurons and Supporting Cells
What are the supporting cells of the central nervous system? - Correct Answers -
Neuroglia, outnumbers neurons 10:1
What are are the types of supporting cells of the CNS? Functions? - Correct Answers -
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 Answers -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 Answers -Increase speed of AP impulse by 50
times
What are afferent neurons? - Correct Answers -Sensory neurons that go TO the brain
What are efferent neurons? - Correct Answers -Motor neurons that exit brain TO body
What are interneurons? - Correct Answers -integrator neurons, they evaluate impulses
for appropriate response
What are the general somatic senses? - Correct Answers -Touch
Pain
Pressure
Temperature
What are the special somatic senses? - Correct Answers -hearing, balance, vision,
smell
What are the general visceral senses? - Correct Answers -Stretch
Pain
, Temperature
Nausea
Hunger
Chemical changes
What is the only special visceral sense? - Correct Answers -Taste
What does the somatic motor system control? - Correct Answers -Skeletal Muscle
What does the visceral motor system control? - Correct Answers -Smooth and cardiac
muscle, secretion by glands
Different parts of a neuron? In order of how an impulse is conducted - Correct Answers
-Dendrites > Cell Body > Axon Hillock > Axon > Axon Terminal
What is a multipolar neuron? - Correct Answers -multiple processes, many dendrites
and one axon
what is a unipolar neuron? - Correct Answers -one process extends and splits into a "T"
shaped structure
what is a bipolar neuron? - Correct Answers -two processes extending from opposite
sides
What is a synapse? What types are there? - Correct Answers -Synapses are gaps
between neurons: axoaxonic, axodendritic, axosomatic.
What is an action potential? - Correct Answers -Electrochemical impulse that allows
neurons to communicate with one another.
Types of tissues that surround neurons? - Correct Answers -Epineurium= dense
irregular connective tissue
Perineurium= dense irregular connective tissue
Endoneurium= loose connective tissue
Difference between gray and white matter? What are tracts made of? - Correct Answers
-Gray Matter= cell bodies, neurons, dendrites, axon terminals- OUTER SURFACE
White Matter= myelinated axons, INNER SURFACE
Tracts are white matter
Primary vesicles of the brain - Correct Answers -prosencephalon
mesencephalon
rhombencephalon
JOHNSON QUESTIONS AND ANSWERS
What are the components of the central and peripheral nervous systems? - Correct
Answers -Neurons and Supporting Cells
What are the supporting cells of the central nervous system? - Correct Answers -
Neuroglia, outnumbers neurons 10:1
What are are the types of supporting cells of the CNS? Functions? - Correct Answers -
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 Answers -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 Answers -Increase speed of AP impulse by 50
times
What are afferent neurons? - Correct Answers -Sensory neurons that go TO the brain
What are efferent neurons? - Correct Answers -Motor neurons that exit brain TO body
What are interneurons? - Correct Answers -integrator neurons, they evaluate impulses
for appropriate response
What are the general somatic senses? - Correct Answers -Touch
Pain
Pressure
Temperature
What are the special somatic senses? - Correct Answers -hearing, balance, vision,
smell
What are the general visceral senses? - Correct Answers -Stretch
Pain
, Temperature
Nausea
Hunger
Chemical changes
What is the only special visceral sense? - Correct Answers -Taste
What does the somatic motor system control? - Correct Answers -Skeletal Muscle
What does the visceral motor system control? - Correct Answers -Smooth and cardiac
muscle, secretion by glands
Different parts of a neuron? In order of how an impulse is conducted - Correct Answers
-Dendrites > Cell Body > Axon Hillock > Axon > Axon Terminal
What is a multipolar neuron? - Correct Answers -multiple processes, many dendrites
and one axon
what is a unipolar neuron? - Correct Answers -one process extends and splits into a "T"
shaped structure
what is a bipolar neuron? - Correct Answers -two processes extending from opposite
sides
What is a synapse? What types are there? - Correct Answers -Synapses are gaps
between neurons: axoaxonic, axodendritic, axosomatic.
What is an action potential? - Correct Answers -Electrochemical impulse that allows
neurons to communicate with one another.
Types of tissues that surround neurons? - Correct Answers -Epineurium= dense
irregular connective tissue
Perineurium= dense irregular connective tissue
Endoneurium= loose connective tissue
Difference between gray and white matter? What are tracts made of? - Correct Answers
-Gray Matter= cell bodies, neurons, dendrites, axon terminals- OUTER SURFACE
White Matter= myelinated axons, INNER SURFACE
Tracts are white matter
Primary vesicles of the brain - Correct Answers -prosencephalon
mesencephalon
rhombencephalon
