Dr. Atchley is performing an autopsy on a brain of a patient who had Alzheimer's disease. What two cellular abnormalities would Dr. Atchley expect to find? What damage would these have done to the brain?
What will be an ideal response?
Dr. Atchley would expect to find amyloid beta plaques and tau tangles. The plaques are caused by an accumulation of the amyloid beta protein which damages axons and dendrites, decreases synaptic input, and decreases plasticity. The damaged axons and dendrites cluster into structures called plaques that damage the cerebral cortex, hippocampus, and other areas. Also, high levels of amyloid beta cause more phosphate groups to attach to tau proteins. The altered tau cannot bind to its usual targets within axons, and so it starts spreading into the cell body and dendrites.
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How are menopause and the climacteric related?
a. Menopause typically ends right before the climacteric. b. The climacteric is a process triggered by menopause c. Menopause is a point in time and climacteric is a process. d. Menopause and the climacteric are unrelated.
_____ is defined as an organized combination of an individual's unique attributes, motives, and behaviors
a. Sociability b. Generativity c. Personality d. Integrity
____ is a term suggested by Skinner to indicate a response that can be changed by its consequences
a. Prepared response c. Effect response b. Conditioned response d. Operant response
As Jeannine turns up the volume of the stereo system, we may conclude that
a. more auditory neurons fire. c. auditory neurons fire less frequently. b. fewer auditory neurons fire. d. overtones are more consonant