Which of the following statements is true?
◦ Arteries carry only oxygenated blood.
◦ The systemic circuit leaves the heart from the left ventricle.
◦ Blood passes through only one capillary bed on its trip through the systemic circuit.
◦ Platelets survive a longer time than erythrocytes.
◦ The heart is able to pick up the oxygen it needs as the blood flows through it.