Tom gets a cut on his hand. After several days he notes swelling, pain, heat, and redness. Upon opening the wound to relieve the pressure, the presence of pus is noted. What has happened to the wound?
What will be an ideal response
The wound has become infected, probably with bacteria. The initial symptoms indicate acute inflammation. Pus indicates the presence of dead or dying neutrophils, broken-down tissue cells, and living and dead pathogens.
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Light and dark adaptation involves
A. pupillary reflexes. B. variations in rod and cone function. C. changes in the amount of available rhodopsin. D. pupillary reflexes and changes in the amount of available rhodopsin. E. pupillary reflexes, variations in rod and cone function and changes in the amount of available rhodopsin.
Which of the following statements best describes angular movements?
A) They allow movement only in one plane. B) They allow movement in several planes. C) They occur only between bones with flat articular processes. D) They change (increase or decrease) the angle between two bones.
A portion of a cell's plasma membrane is removed during endocytosis
Indicate whether the statement is true or false.
Early menopause in women will occur if
A) erythropoietin levels are maintained at too high a level in the blood. B) androgen production becomes too high. C) the production of estrogens declines too much to support ovulation. D) insulin levels and production decline too rapidly. E) None of the answers are correct.