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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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
Going from superior to inferior, the sequence of the vertebral column is:
a. sacral, coccyx, thoracic, lumbar, and cervical b. coccyx, sacral, lumbar, thoracic, and cervical c. cervical, lumbar, thoracic, sacral, and coccyx d. cervical, thoracic, lumbar, sacral, and coccyx
Which of the following chemicals is not present in bone?
A) calcium phosphate B) collagen fibers C) calcium carbonate D) chondroitin sulfate E) hydroxyapatite
The serous membrane that surrounds each lung is created by a parietal and visceral ________
A) pleura B) pericardium C) peritoneum D) mediastinum