A pulmonary embolism is most likely caused by a clot reaching
A) a lung through a pulmonary artery.
B) the heart through a pulmonary artery.
C) a lung through a pulmonary vein.
D) the heart through a pulmonary vein.
A
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In the blastocyst, the ________ is destined to become the __________
a. trophoblast; fetus b. trophoblast; fetal portion of the placenta c. trophoblast; inner cell mass d. blastocoele; digestive system, lungs, and kidneys for the fetus e. blastocoele; fetus
Male embryos develop both Wolffian and Mullerian ducts, but only the Wolffian ducts remain in the male fetus.
Answer the following statement true (T) or false (F)
The heart is located in the ____________________ cavity.?
Fill in the blank(s) with correct word
Which of the following is NOT an aging effect of the lymphatic system and immunity?
A. T cell numbers remain constant, but they are less functional. B. Onset of autoimmune diseases is unchanged. C. Fewer antibodies are produced. D. Fluid removal by the lymphatic capillaries is reduced.