In tracing a drop of blood from the pulmonary to radial artery, there are 5 circulatory points. Pulmonary follows through to the subclavian artery, axillary artery, brachial artery, and then to the radial.
Why would you want to do that. You would have to cut open the heart and watch the blood move from the pulmonary artery through the heart and into the right radial artery.
The myocardium does not have blood flow to the arm. The myocardium is the muscle of the heart and therefore only supplies blood to the heart.
Trace a drop of blood from the left knee to the right arm
Let's start from the heart. The blood drop goes out through the aorta, to other, smaller arteries. Arterioles. Capillaries. Venoules. Veins. Back to the heart (right atrium). From the right atrium, it goes to the right ventricle, to the pulmonary artery, to the lungs, into the pulmonary veins, which bring it to the left atrium of the heart. It then moves to the left ventricle, and out again through the aorta. Note that the drop of blood you started out with would not be the same drop you ended up with.
Right atrium > right ventricle > pulmonary artery > lung > pulmonary vein > left atrium > left ventricle > aorta > arteries > arterioles > capillaries > venules > veins > vena cava > right atrium (again)
blood returning to the heart from the upper portion of the body enters the right atrium through the superior vena cava.
A drop of blood which has been deoxygenated by the body first enters the right side of the heart from the veins. It then goes into the lungs for oxygenation and then enters the heart again in its left side. From the left side of the heart, the drop is then carried by the arteries to the areas of the body like brain, kidneys, muscles, skin etc.
From the vena cava, blood travels into the right atrium, then the right ventricle. The right ventricle pumps the blood through the pulmonary arteries to the lungs. The pulmonary vein carries the oxygenated blood back to the left atrium. The blood flows from the left atrium into the left ventricle which pumps the blood through the aorta and to the rest of the body.
descending colon capillary bed, complex arcades, left colic vein, superior mesenteric vein, inferior vena cava, superior vena cava, right atrium, right ventricle, pulmonary trunk, right pulmonary artery, right pulmonary capillaries, right pulmonary vein, left atrium, left ventricle, aortic arch, descending aorta (thoracic and abdominal), celiac truck, splenic artery then capillary bed of spleen
pumping
Deoxygenated, the blood has come from the rest of the body to the heart via veins, and is being pumped from the heart (hence being an artery) to the lungs to be oxygenated, and brought back to the heart through the pulmonary vein as oxygenated blood (to be pumped to the rest of the body again).
It carries blood from the heart to the lungs