What is premature ejaculation? a. the inability of a male to prolong sexual excitement long enough to complete sexual intercourse. b. the inability of the male to achieve orgasm. c. the experience of persistent genital pain before or during sexual intercourse. d. the inability of a male to achieve sexual arousal before sexual intercourse?

answer; the above answer to the above statement is (true)

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.