Which of the following is NOT an example of an autocrine chemical messenger?
A. prostacyclins
B. thromboxanes
C. leukotrienes
D. endorphins
D
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Two patients are brought to the emergency room. One has cut his finger with a knife; the other has stepped on a nail. Which wound has a greater chance of becoming infected? Why?
What will be an ideal response?
Megakaryocytes produce
A) proteins. B) membranes. C) platelets. D) enzymes. E) All of the answers are correct.
A 56-year-old man who is diagnosed with rectal cancer is undergoing biopsy of several lymph nodes. The nodes most likely to be sampled from this patient will be from the inferior mesenteric nodes, inguinal nodes, and the
A. gonadal nodes B. internal iliac nodes C. portal vein nodes D. renal nodes E. superior mesenteric nodes
Which class of leukocytes is particularly abundant in the red pulp of the spleen?
A) T lymphocytes B) free and fixed macrophages C) B lymphocytes D) neutrophils E) red blood cells