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BIO 253 EXAM 2 LATEST ACTUAL EXAM 150 QUESTIONS AND CORRECT DETAILED ANSWERS WITH EXPLANATIONS |ALREADY GRADED A+ $17.99   Add to cart

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BIO 253 EXAM 2 LATEST ACTUAL EXAM 150 QUESTIONS AND CORRECT DETAILED ANSWERS WITH EXPLANATIONS |ALREADY GRADED A+

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BIO 253 EXAM 2 LATEST ACTUAL EXAM 150 QUESTIONS AND CORRECT DETAILED ANSWERS WITH EXPLANATIONS |ALREADY GRADED A+ What Is A Schwann Cell? - Answer-- PNS neuroglia that encase axon in a sheath - schwann cell wrap tightly around axon in layers composed of of myelin a lipoprotein mixture ...

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  • November 1, 2024
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BIO 253 EXAM 2 LATEST ACTUAL EXAM 150

QUESTIONS AND CORRECT DETAILED

ANSWERS WITH EXPLANATIONS |ALREADY

GRADED A+




What Is A Schwann Cell? - Answer-- PNS neuroglia

that encase axon in a sheath

- schwann cell wrap tightly around axon in layers

composed of of myelin a lipoprotein mixture

- coating is called the Myelin Sheath

- Nodes of Ranvier

,What Are The Nodes Of Ranvier? - Answer-gaps in

myelin sheath between schwann cells.




What Are Multipolar Neurons? - Answer-- 99% of

neurons

- many processes

- most neurons of CNS




What Are Bipolar Neurons? - Answer-- two

processes

- eyes, ear, nose




What Are Unipolar Neurons? - Answer-- one process

,- cell bodies are ganglia

- sensory




What Are Sensory Neurons? - Answer-- afferent

neursons

- carry impulse to CNS

- most are unipolar

- some are bipolar




What Are Interneurons? - Answer-- association

neurons

- link neurons

, - multipolar

- located in CNS




What Are Motor Neurons? - Answer-- multipolar,

eefferent

- carry impulses away from CNS

- carry impulses to effectors




What Are Astrocytes? - Answer-- connect neurson to

blood vessels; exchange and growth factors

- form scar tissue

- aid metabolism of certain subsances

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