Blood picks up oxygen as it passes tiny air sacs at the ends of the lungs called:%0D%0A%0D%0A(1 point)%0D%0AResponses%0D%0A%0D%0Aalveoli.%0D%0A%0D%0Aalveoli.%0D%0A%0D%0Abronchioles.%0D%0A%0D%0Abronchioles.%0D%0A%0D%0Apustules.%0D%0A%0D%0Apustules.%0D%0A%0D%0Apulmonary reticules.
