Axons cross from one side of the spinal cord to the other through the
A) lateral white column.
B) posterior gray horn.
C) central canal.
D) posterior median sulcus.
E) anterior white commissure.
E
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Which of the following statements concerning the permeability of a typical neuron membrane at rest is TRUE?
A. All of the K+ channels in the membrane are open. B. The permeability to Na+ is much greater than the permeability to K+. C. The voltage-gated Na+ channels are in the inactivated state. D. There is equal permeability to Na+ and K+. E. Most of the voltage-gated Na+ channels are in the closed state.
The sight of food can trigger a series of events that results in the release of gastric juice. All but one of the following is true in regards to the previous statement. Select the one answer that is not true
A) This prepares the stomach for food before its arrival in the stomach. B) This is an example of a long reflexive pathway. C) The motor nerves of this pathway are part of the sympathetic division of the autonomic nervous system. D) The cerebral cortex, hypothalamus and medulla oblongata are all involved in processing the stimulatory information.
Blood vessels traveling away from the heart are
A) venules. B) arteries. C) capillaries. D) arterioles. E) All of the answers are correct.
The phosphate buffer system serves as an important urinary buffer
Indicate whether the statement is true or false