Transport System

Which shows the correct pathway of oxygenated blood entering and leaving the heart?

• Pulmonary vein > left atrium > left ventricle > aorta

• Pulmonary vein > left atrium > right ventricle > aorta

• Vena cava > right atrium > right ventricle > pulmonary artery

• Vena cava > right atrium > left ventricle > pulmonary artery

Which shows the correct pathway of deoxygenated blood entering and leaving the heart?

• Vena cava > right atrium > right ventricle > pulmonary artery

• Vena cava > right atrium > left ventricle > pulmonary artery

• Vena cava > right atrium > right ventricle > pulmonary vein

• Vena cava > left atrium > left ventricle > pulmonary artery

What is the function of valves in heart?

• To prevent the backflow of blood in the chambers.

• To allow the backflow of blood in the heart.

• To initiate the flow of the blood in the heart.

Where does Atrioventricular Valves (AV valves) are located?

• In between atria and ventricle chambers.

• In the area where pulmonary artery leaves the right ventricle.

• In the area where aorta leaves the left ventricle.

• In between left and right ventricles.

Which of the following structures is considered to be the pacemaker of the heart?

• AV node

• AV bundle

• SA node

• Purkinje fiber

When impulses are conducted through the heart, transmission is delayed at the _____________ so that the ____________ may fully contract before the ___________ contract.

• Sinoatrial node, atria, ventricles

• Sinoatrial node, ventricles, atria

• Atrioventricular node, atria, ventricles

• Atrioventricular node, ventricles, atria

Lymph nodes are widely distributed throughout the body. Along the lymphatic veins they filter the _________ before it is returned to the _______.

• lymph, blood

• lymph, heart

• blood, lymph

• blood, heart

Which statement in NOT TRUE of the lymphatic system?

• Lymphatic vessels are closed at one end.

• Lymph has fewer plasma protein molecules than the blood plasma

• The thoracic duct carries the lymph to the right subclavian vein

• Returning fluid filtered out from the capillaries to the blood circulatory system

The breakdown of triglyceride into monoglyceride and fatty acid are catalyzed by enzyme ...

• lipase

• amylase

• protease

• lactase

Small globules formed when triglycerides coated with phospholipid, cholesterol and protein is called ...

• Chylomicron

• Chyle

• Lacteal

• Lymph fluid