It is the right atrium, and it pumps blood to the lungs 

It is the right ventricle, and it pumps blood to the lungs 

It is the right atrium, and it pumps blood to the body

It is the right ventricle, and it pumps blood to the body 

Artery 

Vein 

Capillary 

None of the above 

Rt atrium, Lt atrium, lungs, Rt vent, Lt vent, body. 

Rt atrium, Lt vent., lungs, Lt atrium, Rt vent., body. 

Rt atrium, Rt vent., lungs, Lt vent., Lt atrium, body. 

Rt atrium, Rt vent., lungs, Lt atrium, Lt vent., body. 

Sample A (Bright Red Blood Cells) 

Sample B (Dark Red Blood Cells) 

Both samples could have come from the left ventricle 

Neither sample could have come from the left ventricle 

All arteries carry oxygen-rich blood.

All veins carry oxygen-rich blood.

All arteries except the pulmonary artery carry O2-rich blood

All veins except the pulmonary vein carry O2-rich blood.