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?

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