Axons leaving the olfactory epithelium collect into ________ or more bundles that penetrate the cribriform plate of the ethmoid
A) 4
B) 8
C) 12
D) 15
E) 20
Answer: E
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Presbycusis refers to age-associated
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AIDS cripples the immune system by interfering with the activity of cells called ________
A) antigen-presenting cells B) plasma cells C) memory cells D) helper T cells