The bond that includes sharing electrons with another atom is called

It is called a covalent bond which is also called a molecular bond

The bond that includes sharing electrons with another atom is called a covalent bond.

A covalent bond is a chemical link between two atoms or ions where the electron pairs are shared between them. A covalent bond may also be termed a molecular bond.

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.