The purpose of the myelin sheath is to _________
a. provide a place for respiration and metabolism to occur
b. carry messages from the spinal cord to the brain
c. insulate the neuron so it can act more efficiently
d. receive messages from outside the neuron and carry them to the cell nucleus
c
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Casey is eight years old. He has finally learned to dress himself in the mornings and is learning to play softball with his older brother. However, he does not seem to be able to learn how to read or perform simple mathematic operations. Casey is best described as having
a. profound disability b. severe disability c. moderate disability d. mild disability e. non-functional disability
Generally speaking, drugs used to treat epilepsy work by ____
a. enhancing the effects of GABA b. causing apoptosis c. preventing the sodium-potassium pump from working d. relaxing the cell membrane
Excess dopamine activity in the brains' of individuals with schizophrenia is believed to produce ______________, but not ________________
A) positive symptoms; negative symptoms B) negative symptoms; positive symptoms C) delusions; hallucinations D) hallucinations; delusions
DES was used to prevent miscarriage in the 1940s and 1950s but caused cervical and testicular cancer in some offspring
Indicate whether the statement is true or false