The __________ __________ is a fetal shunt between the umbilical vein and inferior vena cava.
Fill in the blank(s) with the appropriate word(s).
ductus venosus
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Lymph fluid enters the venous circulation via the
A) right atrium. B) subclavian veins. C) brachiocephalic trunks. D) jugular veins. E) superior and inferior vena cava.
Tissue factor (Factor III) is a factor in the ________ pathway
A) extrinsic B) intrinsic C) common D) retraction E) fibrinolytic
Each of the following local factors produces the relaxation of arteriolar smooth muscle except increased
a. acid b. carbon dioxide c. osmolarity d. oxygen e. potassium
Which of the following statements concerning the plasma membrane is correct?
a. the plasma membrane appears as a trilaminar structure under a light microscope. b. the carbohydrates on the outer surface of the membrane serve as receptor sites for binding chemical messengers in the environment of the cell. c. the lipid bilayer serves as a barrier to passage of H2O-soluble substances through the membrane. d. carrier proteins shuttle back and forth across the membrane as they carry passenger molecules from one side to the other. e. the plasma membrane is impermeable to any substance that is not lipid soluble or is greater than 0.8 nm in diameter.