According to hobbes, to achieve peace for ourselves and to avoid death, humans enter into a and submit to an overarching sovereign authority charged with ensuring peace for everyone.

English philosopher Thomas Hobbes, in his 1651 book titled “Leviathan”, which established the social contract theory, postulated that to achieve peace for ourselves and to avoid death; humans enter into a SOCIAL CONTRACT and submit to an overarching sovereign authority charged with ensuring peace for everyone.

tgrfdfgmnbdkfjgdfgdfgdfg

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.