Long-term memory may involve
A. rearranging neurons in the brain.
B. an influx of potassium ions into the neuron.
C. forming a nerve plexus.
D. activating substance P.
E. a change in the shape of the neuron's cytoskeleton.
Answer: E
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Which of the following chemicals is not present in bone?
A) calcium phosphate B) collagen fibers C) calcium carbonate D) chondroitin sulfate E) hydroxyapatite
If a concentration or electrical gradient is present for a given substance, the substance will always passively permeate the membrane
Indicate whether the statement is true or false
The serous membrane that surrounds each lung is created by a parietal and visceral ________
A) pleura B) pericardium C) peritoneum D) mediastinum
Going from superior to inferior, the sequence of the vertebral column is:
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