Some lymphocytes can survive as long as ________
A) days B) weeks C) months D) decades E) years
D
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The __________ nerve supplies parasympathetic fibers to the muscle that controls the ocular lens.
Fill in the blank(s) with the appropriate word(s).
Keratinocytes are
A. sometimes alive and sometimes dead, depending on where they are found. B. the most abundant cell type in the epidermis. C. able to synthesize the protein keratin. D. found throughout all epidermal strata. E. All of the choices are correct.
Which of the following statements regarding blood clotting is TRUE?
A. Blood clotting requires activation of thrombin. B. Blood clotting is enhanced by prostaglandin I2 (PGI2) and nitric oxide. C. A blood clot is a network of interlacing strands of fibrinogen. D. Blood clotting occurs too rapidly in indivduals with the disease hemophilia. E. Injecting tissue plasminogen activator (t-PA) into a patient who is bleeding will aid blood clotting.
Carriers for recessive disorders are
A. heterozygous. B. homozygous recessive. C. homozygous dominant. D. either heterozygous or homozygous recessive.