The high _____ of a myelin sheath insulates a neuron from electrically charged atoms in the fluids that encase the nervous system.
A) fat content
B) protein content
C) carbohydrate content
D) fiber content
Question 2Sensory sharpness declines dramatically in early adulthood.
Indicate whether the statement is true or false
Question 3Which of the following is true of myelination?
A) It is complete at birth.
B) Myelination of the brain's prefrontal matter is completed during neonatal development.
C) The breakdown of myelin generally occurs in the first decade of life.
D) It is part of the maturation process that leads to the abilities to crawl and walk during the first year after birth.
Question 4Emerging adults typically feel that they have very limited options in life.
Indicate whether the statement is true or false
Question 5In the context of neurons, which of the following is a function of the myelin sheath?
A) It facilitates the entry of electrically charged atoms in the fluids that encase the nervous system into the neurons.
B) It prevents electrical messages from traveling down an axon.
C) It facilitates the creation of neurotransmitters.
D) It minimizes leakage of the electric current being carried along an axon.
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