blood components

Which component of blood is responsible for helping to stop bleeding?

• platelets
• red blood cells
• white blood cells
• plasma

Which component of blood is responsible for carrying oxygen?

• red blood cell
• white blood cell
• platelets
• plasma

Red blood cells are also known as?

• erythrocytes

• erythophosils

• lymphocytes

• eosinophils

Oxygen transport in humans involves the bonding of oxygen with

• white blood cells

• platelets

• hormones

• hemoglobin molecules

Which statement correctly describes the activities of the components of human blood shown in the diagram?

• Both A and B function in immune responses, and C transports oxygen

• A, B, and C are able to synthesize hemoglobin

• Both B and C provide immunity, and A transports nutrients

• A transports oxygen, B starts clots, and C functions in immune response to fight infections

A function of the white blood cells is to

• transport oxygen to body cells

• produce hormones that regulate cell communication

• carry glucose to body cells

• protect the body against pathogens

The liquid part of blood made of mostly water; nutrients, minerals and oxygen are dissolved

• Marrow

• Plasma

• Proteins

• Urea

Name the proteins on the surface of red blood cells.

• Antibodies

• Antigens

• Plasma

• Collagen

Which of the following is true of an artery?

One, some or all answers could be correct?

• it carries blood back to the heart

• it has a thick layer of elastic tissue

• it has a thin layer of muscle tissue

• it has a narrow lumen

Veins have valves that prevent blood from falling backwards.

Why would this happen if there were no valves?

One, some or all answers could be correct?

• Blood is much heavier in veins

• Blood in veins is at a lower pressure

• Gravity is in the opposite direction to the flow of blood

• Blood is much thicker in veins