Heart Function Quiz

What is the main function of the heart?

• To carry oxygen in the blood

• To pump blood throughout the body

• To help the lungs take in oxygen

• To open and close the valves

Which sentence from the selection supports the conclusion that the heart is essential for survival?

• The heart is the organ that fuels your whole body. (paragraph 2)

• The two ventricles pump blood out of the heart. (paragraph 4)

• It goes in the left atrium of your heart. (paragraph 6)

• This makes sure that blood only flows one way. (paragraph 9)

Which sentence from the selection suggests that the heart helps keep blood flowing in the right direction?

• There are four spaces inside your heart. (paragraph 3)

• The blood that comes from your lungs is full of oxygen. (paragraph 6)

• The heart is basically a pump. (paragraph 7)

• These valves stop blood from going back into the ventricles. (paragraph 9)

Which sentence from the selection indicates the heart’s role in blood circulation?

• There are four spaces inside your heart. (paragraph 3)

• The heart is basically a pump. (paragraph 7)

• A valve is like a door that can open and close. (paragraph 7)

• Ventricles go through two steps, they squeeze and then relax. (paragraph 8)

What is the role of the left atrium in the heart?

• It pumps blood to the rest of the body

• It receives blood from the rest of the body

• It receives oxygen-rich blood from the lungs

• It pumps oxygen-poor blood to the lungs

This question has two parts. First, answer Part A. Then answer Part B. Part A What do the details about myocardium suggest about its importance in the heart’s function?

• It is responsible for the heart's ability to pump blood.

• It helps the heart maintain a steady rhythm.

• It allows the heart to beat faster during exercise.

• It protects the heart from injury.

Part B What sentence best supports the answer to Part A?

• This muscle is called the myocardium. (paragraph 10)

• The myocardium is what makes the heart squeeze and relax. (paragraph 11)

• The heart beats about 70 to 80 times a minute. (paragraph 12)

• Doctors often use your heartbeat to tell if you're healthy. (paragraph 14)

Doctors use a ___________ to listen to your heartbeat.

• thermometer

• otoscope

• scalpel

• stethoscope

Which sentence from the text suggests that heart rate can change based on physical activity?

• The heart is able to keep beating for a person's entire life. (paragraph 13)

• If you jump up and down very fast, your heart needs to pump faster. (paragraph 15)

• The heart usually beats at the same speed. (paragraph 15)

• This happens if you're excited or scared. (paragraph 16)

Which sentence from the text suggests that doctors can assess your health by listening to your heartbeat?

• Doctors can assess your health by listening to your heartbeat.

• Listening to your heartbeat is a common practice.

• Doctors use various methods to assess health.

• Heartbeat is an indicator of health.