In the centrifuged sample of blood illustrated, number 2 indicates
A. erythrocytes.
B. plasma.
C. leukocytes.
D. platelets.
E. leukocytes and platelets.
A
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The joint formed by the axis and atlas that permits the "no" shaking of the head is a ________ joint.
A. plane B. pivot C. hinge D. condylar E. saddle
Low pH alters hemoglobin structure so that oxygen binds less strongly to hemoglobin at low PO2. This increases the effectiveness of
A) external respiration. B) internal respiration. C) carbon dioxide transport. D) hemoglobin synthesis. E) acid-base balance.
________ cells enable the immune system to respond more quickly if the same antigen is encountered a second time.
Fill in the blank(s) with the appropriate word(s).
P450 aromatase is responsible for feminization of the hypothalamus so that a female pattern of hormone secretion occurs
Indicate whether the statement is true or false