The clinical definition of the hematocrit refers to the percentage of
A. erythrocytes in the blood.
B. leukocytes in the blood.
C. platelets in the blood.
D. plasma in the blood.
E. all formed elements in the blood.
A
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The autonomic nervous system is NOT involved in controlling
a) exocrine glands. b) skeletal muscle. c) cardiac muscle. d) smooth muscle. e) endocrine glands.
Which of the following is NOT a function of organic anion and cation carriers in the proximal tubule?
a. facilitating the elimination of non-filterable organic ions in urine b. facilitating the excretion via glomerular filtration of blood borne chemical messengers c. facilitating the excretion of K+ and Na+ in the urine d. facilitating the removal of foreign organic chemicals e. none of these.
An atom with three electrons would have a valence of ________.
Fill in the blank(s) with the appropriate word(s).
Since each kind of B cell carries its own particular antibody molecule in its cell membrane, activation can only occur in the presence of a(n):
corresponding antigen immunosuppressive drug CD3 receptor complex cytotoxic T cell None of the choices are correct