Billions of CNS interneurons are grouped in complex patterns called neuronal
A. webs.
B. pools.
C. meshes.
D. networks.
E. complexes.
Answer: B
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How does the process of sweating help the body regulate temperature?
A. Sweat helps trap cool air against the skin thereby reducing body temperature. B. Sweat causes vasodilation which allows the core temperature of the body to drop. C. Sweat is cold and the production of it decreases body temperature. D. Sweat produced on the skin will evaporate and cool the body if body temperature is too high.
During quiet breathing,
A) only the internal intercostal muscles contract. B) inspiration involves muscular contractions and expiration is passive. C) inspiration is passive and expiration involves muscular contractions. D) both inspiration and expiration are passive. E) both inspiration and expiration involve muscular contractions.
Which of the following is a medical disorder in which the myelin in the CNS has been destroyed?
A) Guillain-Barré syndrome B) Multiple sclerosis C) Muscular dystrophy D) Myasthenia gravis
The superior phrenic artery supplies blood to the
A) lungs. B) heart. C) diaphragm. D) pharynx. E) pancreas.