Which root refers to the membrane surrounding the brain and spinal cord?
A. gangli/o
B. phren/o
C. myel/o
D. dur/o
E. mening/o, meningi/o
Answer: E
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The amount of oxygen that is actually used by the body during rest or a hard workout is determined by the heart rate, the stroke volume, and the amount of
a. blood circulating in the vascular system. b. oxygen removed from the vascular system. c. oxygen provided to the vascular system. d. blood the individual has in his body.
Which of the following essential nutrients does NOT supply energy?
A. proteins B. fats C. carbohydrates D. vitamins
Vessels and organs that pick up excess fluids, filter out disease-causing organisms and other waste products, and return cleansed fluid to general circulation belong to the ______ system.
A. digestive B. antibody C. lymphatic D. neutrophil
Distinguish physical activity from exercise