Lymphatic structures know as lacteals : a) Move hydrophilic molecules
b) Carry milk
c) Are found primarily near mammary glands in females and in the groin of males.
d) Drain into the right lymphatic duct.
e) Are located close to capillaries that lead to the hepatic portal system.

the oxygenated blood then leaves the lungs through pulmonary veins, which return it to the left heart, completing the pulmonary cycle. this blood then enters the left atrium, which pumps it through the mitral valve into the left ventricle. from the left ventricle, the blood passes through the aortic valve to the aorta.

deoxygenated blood leaves through the right ventricle through the pulmonary artery. from the right atrium, the blood is pumped through the tricuspid valve (or right atrioventricular valve), into the right ventricle.