Chp 8: Human Circulatory System revision

Which blood vessel allows exchange of materials?

• capillary

• artery

• vein

• arteriole

Match the following.

• vena cava

• carrying oxygenated blood

• red blood cells

• biconcave shape

• phagocytes

• contains hydrolytic enzymes

• pulmonary vein

• production of antibodies

• lymphocytes

• carrying deoxygenated blood

A haemoglobin molecule contains ___ haem groups

What type is the endothelium that lines the blood vessels?

• columnar

• ciliated

• squamous

• cuboid

In what form is most carbon dioxide transported by the blood?

• as dissolved carbon dioxide

• as hydrogencarbonate ions

• as carbaminohaemoglobin

• as carboxyhaemoglobin

Which node acts as the pacemaker?

• sinoatrial

• atrioventricular

What is dissolved in blood plasma but not dissolved in tissue fluid nor in the lymph?

Reorder the following from the beginning.

• SAN produces impulses.

• Impulses travel down the septum.

• Ventricles contract.

• Atria contract.

• Impulse passes through the AVN.

AVN relays and ___ the impulses before going through the Purkyne tissue.

Which chamber of the heart has the second strongest muscle?

• left atrium

• left ventricle

• right atrium

• right ventricle