Human Blood Vessels

The blood vessel that has the largest diameter is

• vein

• artery

• capillary

The blood vessel that has valves at intervals...

• capillary

• artery

• vein

• none of the above

Carry blood toward heart; mostly oxygen-poor

• Arteries
• Veins
• Capillaries

What is the function (job) of the platelets?

• To form clots (i.e. scabs) when you have cuts and grazes.

• To transport oxygen to the muscles

• To carry dissolved sugars.

• To produce antibodies

Supplies the liver.

• Common hepatic artery
• Left subclavian artery
• Left common carotid artery
• Esophageal arteries

What vessel is labelled X ?

• Artery

• Vein

Which type of vessel is in the middle, labelled X?

• Artery

• Vein

• capillary

Iron-rich protein molecules that releases the oxygen when red blood cells enter the capillaries and come into close contact with body cells

• Platelets

• Hemoglobin

• White blood cells

• Plasma

The yellowish, liquid part of blood that transports blood cells

• Plamsa

• Platelets

• Red blood cells

• White blood cells

Which leukocyte produces antibodies?

• lymphocytes
• monocytes
• eosinophils
• basophils