PNB 2274 Exam 4 Questions with
Guaranteed Pass Solutions.
Neurons - Answer -Send and receive electrical and chemical signals
-Excitable
Neuroglia/glial cells - Answer -Support and protect neurons
-May be involved in signal transduction
Neuron characteristics - Answer -High metabolic rate
-Extreme longevity
-Nonmitotic
Unipolar neuron - Answer -Very long axon that's fused to dendrites
-Uncommon in humans
Bipolar neuron - Answer -One dendrite and one axon
Multipolar neuron - Answer -Most common
-One axon and multiple dendrites
Sensory/afferent neuron - Answer Sends impulse from sensory receptors to the central
nervous system
Motor/efferent neuron - Answer Sends impulse from the CNS to muscles or glands
Interneuron - Answer Helps sensory and motor neurons communicate
What type of cells are most likely to be involved in brain tumors? - Answer Glial cells
Characteristics of glial cells - Answer -In both CNS and PNS
-Mitotic
-Protect and nourish neurons
-Much more abundant than neurons
-Smaller than neurons
, Astrocytes - Answer -Maintain BBB
-Generate scaffolding for CNS
-Repair damaged neural tissue
-Cell development
-Regulates interstitial environment
Which neural cells develop first and what cells develop them? - Answer -Glial cells
-Astrocytes
Choroid plexus - Answer Branching network of mostly ependymal cells that produces
cerebrospinal fluid in brain ventricles
Ependymal cells - Answer -Ciliated cuboidal epithelial cells lining the brain ventricles and the
central canal of the spinal cord
-Produce cerebral spinal fluid (CSF) and make up the choroid plexus
-Share characteristics with stem cells
Microglial cells - Answer -Small and motile
-Use phagocytosis to remove cell waste
Oligodendrocytes - Answer -Only located in the CNS
-Wrap around axons and produce myelin
-Only glial cells that can synapse with neurons
What are oligodendrocytes called when they form synapses with neurons? - Answer
Progenitor cells
Satellite cells - Answer -Aka amphicytes
-Located in the PNS
-Surround ganglia
-Regulate environment surrounding the neuron
Schwann cells/neurolemmocytes - Answer -ONLY found in PNS
-Form myelin sheaths
-Secrete neurotrophic factors
Guaranteed Pass Solutions.
Neurons - Answer -Send and receive electrical and chemical signals
-Excitable
Neuroglia/glial cells - Answer -Support and protect neurons
-May be involved in signal transduction
Neuron characteristics - Answer -High metabolic rate
-Extreme longevity
-Nonmitotic
Unipolar neuron - Answer -Very long axon that's fused to dendrites
-Uncommon in humans
Bipolar neuron - Answer -One dendrite and one axon
Multipolar neuron - Answer -Most common
-One axon and multiple dendrites
Sensory/afferent neuron - Answer Sends impulse from sensory receptors to the central
nervous system
Motor/efferent neuron - Answer Sends impulse from the CNS to muscles or glands
Interneuron - Answer Helps sensory and motor neurons communicate
What type of cells are most likely to be involved in brain tumors? - Answer Glial cells
Characteristics of glial cells - Answer -In both CNS and PNS
-Mitotic
-Protect and nourish neurons
-Much more abundant than neurons
-Smaller than neurons
, Astrocytes - Answer -Maintain BBB
-Generate scaffolding for CNS
-Repair damaged neural tissue
-Cell development
-Regulates interstitial environment
Which neural cells develop first and what cells develop them? - Answer -Glial cells
-Astrocytes
Choroid plexus - Answer Branching network of mostly ependymal cells that produces
cerebrospinal fluid in brain ventricles
Ependymal cells - Answer -Ciliated cuboidal epithelial cells lining the brain ventricles and the
central canal of the spinal cord
-Produce cerebral spinal fluid (CSF) and make up the choroid plexus
-Share characteristics with stem cells
Microglial cells - Answer -Small and motile
-Use phagocytosis to remove cell waste
Oligodendrocytes - Answer -Only located in the CNS
-Wrap around axons and produce myelin
-Only glial cells that can synapse with neurons
What are oligodendrocytes called when they form synapses with neurons? - Answer
Progenitor cells
Satellite cells - Answer -Aka amphicytes
-Located in the PNS
-Surround ganglia
-Regulate environment surrounding the neuron
Schwann cells/neurolemmocytes - Answer -ONLY found in PNS
-Form myelin sheaths
-Secrete neurotrophic factors
