Circulatory System

What is NOT a function of the circulatory system?

• removing waste

• delivering oxygen

• delivering nutrients

• fighting infection

What layer of the heart is the thickest and made of cardiac muscle?

• Myocardium

• Pericardium

• Endocardium

• Epicardium

What two chambers receive the blood?

• Both atria

• Both ventricles

• Right atrium and ventricle

• Left atrium and ventricle

Capillaries serve what function?

• Gas exchange between the veins and arteries

• Carry blood back to the heart

• Carry blood away from the heart

• Solely provide the brain with its own source of blood

Arteries serve what function?

• Gas exchange between the veins and arteries

• Carry blood back to the heart

• Carry blood away from the heart

• Solely provide the brain with its own source of blood

Veins serve what function?

• Gas exchange between the veins and arteries

• Carry blood back to the heart

• Carry blood away from the heart

• Solely provide the brain with its own source of blood

What is considered the body's natural pacemaker?

• SA node

• AV node

• Bundle of His

• Purkinje fibers

Which major blood vessel carries deoxygenated blood?

• Aorta

• Pulmonary artery

• Coronary artery

• Carotid artery in the neck

The systemic circulatory loop refers to:

• the flow of blood from heart to lungs

• the flow of blood from heart to body

• the flow of blood in the heart

• the flow of blood solely to the brain

The pulmonary circulatory loop refers to:

• the flow of blood from heart to lungs

• the flow of blood from heart to body

• the flow of blood in the heart

• the flow of blood solely to the brain