NSCI 225 Exam 1 Questions & Answers 2024/2025
2 categories of cells in the nervous system: - ANSWERS- neurons
- glia
_________ are the main cell type responsible for integration and relay of messages. - ANSWERSNeurons
_________ are cells that support the neurons - ANSWERSGlia
What ar...
Characteristics of Astrocytes - ANSWERS- support cells, surround somas and contribute to blood brain
barrier (end feet on capillaries)
- most numerous
- controls extracellular environment (K+)
- Takes up neurotransmitters
Characteristics of Oligodendrocytes - ANSWERS- myelinates in CNS only
- myelinates more than one axon
- each axon requires more than one oligodendrocyte
Characteristics of Microglia - ANSWERS- clean up cells . . . phagocytosis
- not from same embryological source
- found in resting state
- respond to injury
Characteristics of Satellite cells - ANSWERS- supports cells around neurons in ganglia
Characteristics of Schwann cells - ANSWERS- myelinates all axons in the PNS
- can only myelinate 1 block for 1 axon
What is spina bifida? - ANSWERS- failure of fusion of vertebral arches at caudal end of neural tube
What is a meningocele? - ANSWERSwhen the meninges are exposed to outside of body
What is a meningomyelocele? - ANSWERSMeninges and neural components exposed to outside of body
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