Circulatory System

What color is human blood inside the body?

• Blue, turning red when exposed to air

• Always red, with varying shades based on oxygen levels

• Green, turning red when exposed to air

• Blue in veins, red in arteries

Which of the following is NOT considered a cellular component of blood?

• Red blood cells

• White blood cells

• Platelets

• Plasma

Which type of blood vessel typically carries blood away from the heart?

• Veins

• Capillaries

• Arteries

• Venules

Which side of the human heart is responsible for pumping oxygenated blood?

• The right side

• The left side

• Both sides pump oxygenated blood

• Neither side pumps oxygenated blood

What is the correct pathway for deoxygenated blood from the body to the lungs?

• Inferior Vena Cava -> Right Atrium -> Tricuspid Valve -> Right Ventricle -> Pulmonary Valve -> Pulmonary Artery

• Superior Vena Cava -> Left Atrium -> Mitral Valve -> Left Ventricle -> Aortic Valve -> Aorta

• Pulmonary Vein -> Left Atrium -> Mitral Valve -> Left Ventricle -> Aortic Valve -> Aorta

• Inferior Vena Cava -> Left Atrium -> Tricuspid Valve -> Left Ventricle -> Pulmonary Valve -> Pulmonary Artery

After blood becomes oxygenated in the lungs, what is its correct pathway to be distributed to the body?

• Pulmonary Vein -> Left Atrium -> Mitral Valve -> Left Ventricle -> Aortic Valve -> Aorta

• Pulmonary Artery -> Right Atrium -> Tricuspid Valve -> Right Ventricle -> Pulmonary Valve -> Aorta

• Inferior Vena Cava -> Right Atrium -> Tricuspid Valve -> Right Ventricle -> Pulmonary Valve -> Pulmonary Artery

• Pulmonary Vein -> Right Atrium -> Mitral Valve -> Right Ventricle -> Aortic Valve -> Aorta

How does the heart muscle receive its own supply of oxygen and glucose?

• Through coronary arteries that branch off the aorta.

• Directly from the blood flowing through its chambers.

• Via the pulmonary veins after blood is oxygenated.

• From the inferior vena cava, which delivers deoxygenated blood.

What is a primary consequence of an Atrial Septal Defect?

• Oxygen-rich blood mixes with oxygen-poor blood.

• Blood flow to the lungs is completely blocked.

• The heart stops beating due to lack of electrical signals.

• The aorta becomes too narrow, restricting blood flow to the body.