Which valve prevents the backflow of blood into the left ventricle when the ventricles relax?
A. Aortic semilunar valve
B. Right atrioventricular valve
C. Left atrioventricular valve
D. Pulmonary semilunar valve
E. None of these answers is correct.
Answer: A
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Which relatively weak type of bond helps stabilize the three dimensional structure of large molecules like proteins and DNA?
a) nonpolar covalent b) polar covalent c) hydrogen d) ionic e) atomic
Which of the following hormones acts as a potent anti-inflammatory agent?
What will be an ideal response?
Which statement about blood is true?
A) Oxygen is transported by the leukocyte. B) Leukocytes are the most common cell in blood. C) The neutrophil is the rarest type of white blood cell. D) Red bone marrow produces erythrocytes, leukocytes, and thrombocytes.
What occurs because of increased capillary permeability at the site of inflammation?
A. Increased pressure from fluid causes pain. B. Escaped fluids cause swelling. C. Clotting factors move into tissues. D. All apply.