The most common type of cartilage, named for its glassy appearance, is
A. reticular cartilage.
B. areolar cartilage.
C. hyaline cartilage.
D. fibrocartilage.
E. elastic cartilage.
Answer: C
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The changes in the diameter of peripheral blood vessels is the ________ reflex.
Fill in the blank(s) with the appropriate word(s).
________ employ a "respiratory burst" to produce bactericidal chemicals such as hydrogen peroxide (H2O2) and hypochlorite (HClO).
A. Basophils B. Neutrophils C. Cytotoxic T cells D. Natural killer cells E. Suppressor T cells
Hydrochloric acid (HCl) is secreted by ________ cells.
A. parietal B. enteroendocrine C. mucous D. chief E. regenerative (stem)
Since there are no genes coding for carbohydrates, nucleic acids, or lipids, how do cells produce them?
A) Cells import these products from older cells. B) Cells can produce carbohydrates, nucleic acids, and lipids out of proteins. C) Enzymes encoded by genes synthesize these products. D) Cells are born with all the products they need. E) Cells absorb these products by endocytosis.