The bicuspid or mitral valve is located
A) in the opening of the aorta.
B) in the opening of the pulmonary trunk.
C) where the venae cavae join the right atrium.
D) between the right atrium and right ventricle.
E) between the left atrium and left ventricle.
E
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The waste product bilirubin is produced from
A) globin chains of hemoglobin. B) heme molecules plus iron. C) heme molecules lacking iron. D) iron found in hemoglobin molecules. E) abnormal proteins found in red blood cells.
Which of the following is caused by bacteria?
a. joint ill c. leukemia b. rabies d. ich
Smooth muscle can contract without a change in membrane potential following:
A. stimulation of ?-adrenergic receptors in the smooth muscle B. inhibition of Rho kinase in the smooth muscle C. stimulation of InsP3 production in the smooth muscle D. stimulation of nitric oxide release from endothelial cells E. stimulation of K+ channels in the smooth muscle
A bond that involves the transfer of electrons is called a/an
-covalent bond -hydrogen bond -ionic bond -electronic bond