What structure separates the right atria from the left atria?
A. Coronary sulcus
B. Interatrial sulcus
C. None of these answers are correct.
D. Interventricular septum
Answer: C
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Which of the following does NOT describe erythrocytes?
A. contain myoglobin B. have a high surface-to-volume ratio C. carry oxygen and carbon dioxide in blood D. are red in color E. when mature, have no nucleus
Doves and partridges are examples of __________________
Fill in the blank(s) with correct word
Blocking the antigen receptors on the surface of lymphocytes would interfere with
A) phagocytosis of the antigen. B) that lymphocyte's ability to produce antibodies. C) antigen recognition. D) the ability of the lymphocyte to present antigen. E) agglutination of the antigen.
What substance is produced and secreted from mammary glands?
A) oil B) sweat C) milk D) wax