The spinal cord has
A. a core of white matter surrounded by gray matter.
B. no nourishment from, nor interaction with CSF.
C. a core of gray matter surrounded by white matter.
D. spinal nerves that control olfaction.
Answer: C
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The root of the lung includes all of the following except the
A. airway structures. B. nerves. C. blood vessels. D. All of the above are included in the root of the lung.
During synaptic transmission,
A) The frequency of the action potential is directly correlated with neurotransmitter release. B) The frequency of the action potential is inversely correlated with neurotransmitter release. C) The intracellular concentration of Ca2+ remains stable because of intracellular buffers. D) The concentration of Ca2+ is inversely related to the amount of neurotransmitter released.
Substance X was isolated in a urine sample, but it is too big to pass through the glomerular filtration membrane. How is this possible?
A) The glomerulus must be infected and hyperpermeable. B) The kidney must be damaged. C) It was secreted later in the distal tubule. D) It isn't possible. There was a flaw in the urinalysis.
Epinephrine is said to have a glucose-sparing effect
Indicate whether the statement is true or false