mcdb 322 exam with correct answers
central nervous system (CNS) - Correct Answers -brain + spinal cord
bilaterally symmetric
brain hemispheres - Correct Answers -two halves of the brain
brainstem - Correct Answers -made up of the midbrain, pons, + medulla
peripheral nervous system - Correct Answers -nerves + ganglia outside of the brain and
spinal cord
nerves - Correct Answers -discrete bundle of axons
ganglia - Correct Answers -clusters of cell bodies of nerve cells
neuronal processes - Correct Answers -cytoplasmic extensions:
axons
dendrites
soma - Correct Answers -cell body of a neuron
presynaptic terminal - Correct Answers -ends of the axons
participate in the transfer of info between neurons
glia - Correct Answers -non-neuronal cells of the brain + nervous system
types of glia - Correct Answers -oligodendrocytes
schwann cells
astrocytes
microglia
, oligodendrocytes - Correct Answers -branch off from the cell body to wrap around axons
of neurons
=> provides insulation for axons as myelin
astrocytes - Correct Answers -maintain the blood-brain barrier
help maintain concentration of chemicals in the extracellular space
=> remove excess neurotransmitter
microglia - Correct Answers -neuroimmune functions
example: removing cell debris + other waste
myelin sheath - Correct Answers -covers the axon of some neurons
increases speed along axons
white matter of CNS - Correct Answers -myelinated axons
from oligodendrocytes
gray matter of CNS - Correct Answers -NONmyelinated sections
=> SO unmyelinated axons
neuronal cell bodies
dendrites
axon terminals
cell theory (1839) Schleiden and Schwann - Correct Answers -all living organisms are
composed of cells as their basic units
reticular theory (golgi) - Correct Answers -the reticulum as a whole constituted as the
unit of the nervous system
NOT individual cells
golgi stain - Correct Answers -allows for visualization of individual neurons
=> disproving the reticular theory
golgi staining limitations - Correct Answers -can only be done on dead + fixed tissue
no control over which cells are stained (uneven spread)
cannot map long distances
fluorescence dye - Correct Answers -fluorescent molecule absorbs photons at specific
wavelength
w/ appropriate filters, can get brightly colored speciman
central nervous system (CNS) - Correct Answers -brain + spinal cord
bilaterally symmetric
brain hemispheres - Correct Answers -two halves of the brain
brainstem - Correct Answers -made up of the midbrain, pons, + medulla
peripheral nervous system - Correct Answers -nerves + ganglia outside of the brain and
spinal cord
nerves - Correct Answers -discrete bundle of axons
ganglia - Correct Answers -clusters of cell bodies of nerve cells
neuronal processes - Correct Answers -cytoplasmic extensions:
axons
dendrites
soma - Correct Answers -cell body of a neuron
presynaptic terminal - Correct Answers -ends of the axons
participate in the transfer of info between neurons
glia - Correct Answers -non-neuronal cells of the brain + nervous system
types of glia - Correct Answers -oligodendrocytes
schwann cells
astrocytes
microglia
, oligodendrocytes - Correct Answers -branch off from the cell body to wrap around axons
of neurons
=> provides insulation for axons as myelin
astrocytes - Correct Answers -maintain the blood-brain barrier
help maintain concentration of chemicals in the extracellular space
=> remove excess neurotransmitter
microglia - Correct Answers -neuroimmune functions
example: removing cell debris + other waste
myelin sheath - Correct Answers -covers the axon of some neurons
increases speed along axons
white matter of CNS - Correct Answers -myelinated axons
from oligodendrocytes
gray matter of CNS - Correct Answers -NONmyelinated sections
=> SO unmyelinated axons
neuronal cell bodies
dendrites
axon terminals
cell theory (1839) Schleiden and Schwann - Correct Answers -all living organisms are
composed of cells as their basic units
reticular theory (golgi) - Correct Answers -the reticulum as a whole constituted as the
unit of the nervous system
NOT individual cells
golgi stain - Correct Answers -allows for visualization of individual neurons
=> disproving the reticular theory
golgi staining limitations - Correct Answers -can only be done on dead + fixed tissue
no control over which cells are stained (uneven spread)
cannot map long distances
fluorescence dye - Correct Answers -fluorescent molecule absorbs photons at specific
wavelength
w/ appropriate filters, can get brightly colored speciman
