3. Trace the pathway of the blood in the pulmonary circulation. Fill in the box with the appropriate structures. ventricle sinus. venosus ventricle COnus arteriosus capillaries of lungs

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for its oxygen then it may die, forming rct. The severity of this condition depends on the precise location of the occlusion, which downstream tissues are involved, and how large an area of tissue dies. Use Figure 4.9 as a reference and list the flow of blood through both circuits in order, beginnng with the right atrium (don't forget to include the heart valves). 1. If an embolus breaks off in a systemic vein in the leg, it would be able to pass through: It would occlude: 2. If an embolus formed in the left ventricle, it would be able to pass through: 3. It would occlude: 4.

3 describe why arteries that are no longer stretchy can cause the heart muscle to wear out and fail *