COMPARATIVE NEUROBIOLOGY
EXAM 1 QUESTIONS AND ANSWERS
Oligodendrocytes - Correct Answers -lay down CNS myelin
Schwann cells - Correct Answers -lay down PNS myelin
microglial cells - Correct Answers -remove cellular debris, modulate local inflammation
efferent - Correct Answers -carry information away from the brain
afferent - Correct Answers -carry information toward the brain
cresyl violet - Correct Answers -allows counting cell bodies, binds to ribosomes,
nucleus, acidic components of cytoplasm
commissure - Correct Answers -connect hemiganglia of same segment
deformation of front end of protozoa - Correct Answers -increase in PCa++ which
depolarizes cell, causes backwards motion
deformation of rear end of protozoa - Correct Answers -increase in PK+ which
hyperpolarizes cell, causes forward motion
porifera - Correct Answers -sponges, lack nervous system, cilia (especially osculum)
sense water flow
reduced silver stains - Correct Answers -stains only neurons, good to count axons
cobaltous chloride - Correct Answers -retrograde
horseradish peroxidase - Correct Answers -retrograde, black reaction product
Lucifer yellow - Correct Answers -intracellular stain, kills cells, shows circuits
immunohistochemistry - Correct Answers -specific primary antibody binds to receptor on
cell, secondary antibodies w marker binds to primary antibody
GAL4/UAS - Correct Answers -can see what genes a cell is transcribing
connective - Correct Answers -connects hemiganglia of adjacent segments
EXAM 1 QUESTIONS AND ANSWERS
Oligodendrocytes - Correct Answers -lay down CNS myelin
Schwann cells - Correct Answers -lay down PNS myelin
microglial cells - Correct Answers -remove cellular debris, modulate local inflammation
efferent - Correct Answers -carry information away from the brain
afferent - Correct Answers -carry information toward the brain
cresyl violet - Correct Answers -allows counting cell bodies, binds to ribosomes,
nucleus, acidic components of cytoplasm
commissure - Correct Answers -connect hemiganglia of same segment
deformation of front end of protozoa - Correct Answers -increase in PCa++ which
depolarizes cell, causes backwards motion
deformation of rear end of protozoa - Correct Answers -increase in PK+ which
hyperpolarizes cell, causes forward motion
porifera - Correct Answers -sponges, lack nervous system, cilia (especially osculum)
sense water flow
reduced silver stains - Correct Answers -stains only neurons, good to count axons
cobaltous chloride - Correct Answers -retrograde
horseradish peroxidase - Correct Answers -retrograde, black reaction product
Lucifer yellow - Correct Answers -intracellular stain, kills cells, shows circuits
immunohistochemistry - Correct Answers -specific primary antibody binds to receptor on
cell, secondary antibodies w marker binds to primary antibody
GAL4/UAS - Correct Answers -can see what genes a cell is transcribing
connective - Correct Answers -connects hemiganglia of adjacent segments