The brain
a. consists of 90 percent interneurons and 10 percent glial cells
b. can perform anaerobic metabolism when oxygen supplies are low
c. normally uses only glucose as a fuel for energy production
d. exhibits all of the above
e. exhibits none of the above
C
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The ligaments that protect the alignment of the femoral and tibial condyles and limit the movement of the femur anteriorly and posteriorly are called ________
A) anterior ligaments B) cruciate ligaments C) tibial collateral ligaments D) patellar ligaments
Which of the following statements concerning paradoxical sleep is incorrect?
a. paradoxical sleep is characterized by rapid eye movements. b. a person normally passes through paradoxical sleep before entering slow-wave sleep. c. dreaming occurs only during paradoxical sleep. d. the EEG pattern during paradoxical sleep is similar to that of an alert, awake person. e. a specified amount of paradoxical sleep appears to be required.
When ventricular pressure exceeds atrial pressure, the
A. blood is pumped into the atrium. B. ventricle is in diastole. C. atria pump blood into the ventricles. D. AV valves close. E. ejection occurs.
What does the parathyroid hormone regulate?
A) Magnesium B) Calcium C) Calcitonin D) Glucocorticoids