28 Which type of vessel normally contains valves that

Last updated: 1/6/2023

28 Which type of vessel normally contains valves that prevent the backward flow of materials A arteriole C capillary B artery Medi D vein 29 The concentration of oxygen is highest in the blood flowing through the A pulmonary vein B inferior vena cava C pulmonary artery D superior vena cava 30 Which condition has been linked to a diet that is high in saturated fats A arthritis B emphysema C angina pectoris D mental retardation