the left side of the heart
(Emma Devlin)
The lungs are attached to the heart. The heart carries deoxygenated blood through the pulmonary artery to be converted to oxygenated blood in the lungs. The oxygenated blood returns to the heart through the pulmonary veins.
The blood in venules of the systemic circulation is deoxygenated. The blood in pulmonary venules is oxygenated.
it goes to the lungs,to get itself oxygenated.
The heart is divided into four chambers. I personally find it helpful, however, to think of the heart as being divided into two sides, instead, a left and right side. The right side of the heart is larger and more powerful than the right.
dont ask me ask a docter
if blood entering the heart gets mixed with blood leaving the heart the the blood leaving the heart will get poluted. the blood entering the heart is poluted when it enters the heart, the heart cleans it up; so when the blood leaves the heart it is clean so if it gets polluted the person may get sick and this leads to his/her death.
oxygen
you find non return valves inside the heart, lymph and veines, avoiding fluids from flowing backwards > [veinous blood in veines and heart, oxygenated blood in the heart]. Lymph vessels have valves also. The portal vein though contains no valves. All arteries including arteriols and capillaries have no valves.
The jugular veins are found in your neck, they carry deoxygenated blood from the head to the heart.
Inside a network of blood vessels (arteries, arterioles, capillaries, veins, venules). While the length of some of these blood vessels are minuscule, if you could add all their lengths together, that would make 100 000 km in an average human body. And that's about twice the circumference of the Earth ! More info could be find on http://en.wikipedia.org/wiki/Blood_vessel
Stop trying to cheat on your homework I am going to tell Mr. Andrade
The heart, arteries, and veins are the 3 major organs in the circulatory system. The heart pumps blood through the arteries, and the veins return blood to the heart for circulation throughout the body.