Which type of glial cell lines the ventricles of the brain?
a. astrocytes
b. neurons
c. oligodendrocytes
d. ependymal cells
e. microglia
D
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Why is otitis media more common in children than in adults?
A. Children are more frequently exposed to pathogens that cause ear infections. B. Children have small openings in the tympanic membrane that allow introduction of bacteria. C. Children have longer, more slanted auditory canals. D. Children have shorter, more horizontal auditory tubes. E. Children have smaller, more flexible middle ear bones.
The hormone that has the opposite function of calcitonin is:
a. parathyroid hormone b. T3 c. T4 d. insulin
Carbon monoxide bonds to hemoglobin more effectively than does oxygen
Indicate whether the statement is true or false
Which of the following is NOT a characteristic of aquatic fish?
a. having gills c. having testicles b. having operculum d. having barbels