Circulatory System HS 3

The heart is best described as a:

• filtration unit
• message center
• muscular pump
• storage chamber

Which area of the heart is likely damaged if the patient has a heart attack?

• Endocardium
• Myocardium
• Pacemaker
• Pericardium

What would happen if a small hole developed in the septum?

• Blood would move between the right and left sides of the heart
• Blood would not flow into the coronary arteries
• The blood from the pulmonary artery would enter the aorta
• The heart would stop pumping

When blood leaves the left atrium, where does it go next?

• Aorta
• Left ventricle
• Pulmonary artery
• Right atrium

After blood leaves the right atrium, what valve prevents back flow?

• Aortic
• Mitral
• Pulmonary
• Tricuspid

What follows diastole?

• Fibrillation
• Hyperbole
• Phagocytosis
• Systole

Where does an electrical impulse go after it leaves the Bundle of His?

• Aorta
• AV node
• Purkinje fibers
• SA node

What type of blood vessel is the MOST muscular and elastic?

• Artery
• Capillary
• Vein
• Venule

In what type of blood vessel does oxygen and carbon dioxide exchange take place?

• Arteriole
• Artery
• Capillary
• Vein

If a person becomes dehydrated, what would there be less of in the blood?

• Erythrocytes
• Leukocytes
• Plasma
• Platelets