Structure of the Cardiovascular System

The function of the heart in the cardiovascular system is to:

• Pump blood throughout the body

• Filter waste from the blood

• Produce hormones

• Store nutrients

The heart is surrounded by a twin-layered sac known as the ________.

• pericardium

• pleura

• meninges

• peritoneum

Which layer of the heart is the strong middle layer that forms most of the heart?

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What prevents the blood on the right side of the heart from coming into contact with the blood on the left side?

• The septum

• The valves

• The arteries

• The veins

What is the main function of the left side of the heart when it is full?

• To pump oxygenated blood to the body

• To receive deoxygenated blood from the body

• To pump deoxygenated blood to the lungs

• To receive oxygenated blood from the lungs

Which of the following is a waste product of aerobic respiration taken on board by the blood?

• Oxygen

• Carbon dioxide

• Nitrogen

• Hydrogen

Fill in the blank: The blood returns to the right atrium of the heart via the _______, venules, and veins.

• the inferior and superior vena cavae

• the aorta

• the pulmonary artery

• the carotid artery

Identify the two main parts of the heart's circulation system as shown in the diagram.

• Pulmonary and Systemic Circulation

• Arterial and Venous Circulation

• Left and Right Atrium

• Aorta and Vena Cava

Which valve allows blood to flow in one direction only, from the left atrium to the left ventricle?

• Tricuspid valve

• Bicuspid (mitral) valve

• Aortic valve

• Pulmonary valve

The function of the heart in the cardiovascular system is to:

• Pump blood throughout the body

• Filter waste from the blood

• Produce hormones

• Store oxygen