A burn that destroys only the superficial cells of the epidermis, such as a mild sunburn, is classified as
A) first-degree.
B) second-degree.
C) third-degree.
D) fourth-degree.
A) first-degree.
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Activation of the extrinsic pathway of coagulation requires exposure of the blood to _________.
A. collagen B. tissue factor III C. prothrombin activator D. serotonin
What stimulates the release of parathyroid hormone (PTH)?
A) low blood calcium ion levels B) high levels of vitamin C C) high blood calcium ion levels D) high levels of vitamin D
Which of the following form the inner layer of the glomerular capsule and wrap around the capillaries of the glomerulus?
A) Podocytes B) Nephrocytes C) Macula densa cells D) Monocytes E) Mesangial cells
Down syndrome is due to an extra
A. X chromosome. B. autosome. C. Y chromosome. D. X chromosome or an extra Y chromosome.