Abdominal circulation, where venous blood is drained from the stomach and the small and large intestines, first enters the liver through the:
What will be an ideal response?
hepatic portal system.
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Tom has a condition in which the endothelial lining of his blood vessels cannot secrete prostacyclin (PGI2). How will this affect his blood?
A. Prostacyclin is a clot-dissolving enzyme, so clots will not be broken down and Tom will be at risk for an embolism or thrombosis. B. Because prostacyclin is a clotting factor that encourages formation of platelet plugs, bleeding will not be slowed. C. Prostacyclin is involved in the activation of prothrombin, so the process of clotting will not be complete. D. Because prostacyclin prevents platelets from sticking to the inside of healthy blood vessels, Tom will experience clotting and general narrowing of the blood vessels.
Which statement correctly describes the term left atrioventricular valve?
A) Its cusps open into the left atrium. B) Its cusps open into the superior vena cava. C) Its cusps open into the aorta. D) Its cusps open into the left ventricle. E) Its cusps open into the pulmonary trunk.
The direct connection between two arteries in the circulatory system is called an __________
Fill in the blank with the correct word.
Four-year-old Tim is extremely small for his age, and he shows signs of intellectual impairment. His hair is thinning and his skin is dry. His parents have read about cretinism and pituitary dwarfism as possible diagnoses for their son and have taken him to the pediatrician for tests to be run. Which diagnosis do you think is correct? Explain why
What will be an ideal response?