During inspiration a person's vocal cords are typically
A. adducted.
B. abducted.
C. tensed.
D. relaxed.
Answer: B. abducted.
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What is the function of histamine?
A. It is a vasodilator that speeds blood flow to injured tissues. B. It is a chemical that kills bacteria. C. It is a clotting factor. D. It is a signal to B cells to produce antibodies. E. It is an anticoagulant that inhibits blood clotting.
Epithelium is connected to underlying connective tissue by
A) keratin. B) interfacial canals. C) a basement membrane. D) a reticular lamina. E) proteoglycan.
The sagittal suture joins the
A. left and right parietal bones. B. left and right temporal bones. C. parietal and occipital bones. D. temporal and occipital bones. E. frontal and parietal bones.
The canal that runs through the core of each osteon (the Haversian canal) is the site of ________
A) cartilage and interstitial lamellae B) osteoclasts and osteoblasts C) yellow marrow and spicules D) blood vessels and nerve fibers