Los métodos hormonales son eficientes porque: * Impiden la entrada de los espermatozoides
Se inhibe (no se desarrolla) la ovulación
El óvulo jamás se encuentra con el espermatozoide
Los espermatozoides quedan atrapados y no llegan al óvulo

im back lol i heard you where asking for me

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.