PHYS 261 WCU Week 3 questions with complete solutions

PHYS 261 WCU Week 3 questions with
complete solutions

Neural Tissue - correct answer ✔✔ -made up of:

1. neurons - Function: Communication

2. neuroglial cells - Function: Supporting tissue



Myelin Sheath Production - correct answer ✔✔ -oligodendrites - cns

-schwann cells - pns



Myelin Sheath - correct answer ✔✔ -A fatty substance that covers axons

-Function: insulates axons

---Keeps the ions in the vicinity

-Speeds up transmission of electrical signal (Action Potentials) via enabling saltatory conduction
(jumping node to node)

Forms in sections



Nodes - correct answer ✔✔ -unmyelinated segments



Neuron Communication - correct answer ✔✔ -Via chemical and electrical signals

1. Chemical signal - Neurotransmitters

2. Electrical signal - Action Potentials (impulses)

-Neurons convert chemical signals into electrical signals and vs.

-The only form via which Nervous System transmits information