Question

Trace a drop of blood from the right big toe to the dorsum of the left hand. Include the circulation through the heart and lungs.

Answer 1

Trace a drop of blood from the right big toe (superficially) to the dorsum of left hand:

Ans) capillaries of the right big toe, venules, digital v., great saphenous, femoral v, ext. iliac v., common iliac vein, inferior vena cava, right atrium, tricuspid valve, right ventricle, pulmonary semilunar valve, pulmonary trunk, pulmonary a., lungs, pulmonary v., left atrium, mitral valve, left ventricle, aortic semilunar valve, ascending aorta, aortic arch, left subclavian a., axillary a., brachial a., radial a., digital a., arterioles, capillaries of left thumb i.e dorsum of left hand.