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Heart 101 | National Geographic

National Geographic

6.9M views 7 years ago

Warm-up Questions

What do you already know about what the heart does in the body?
Why do you think National Geographic made a video called “Heart 101”?
What words do you expect to hear in a basic explanation of the heart?

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Heart 101 | National Geographic

What the heart is and its basic parts (00:00 – 00:55)

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1. What is the heart’s main job according to the video?

To control the brain’s signals
To pump blood throughout the body
To digest nutrients from food
To create oxygen for the body

2. Which layer is described as the thin layer that covers the exterior of the heart?

Pericardium
Ventricle
Atrium
Endocardium

3. What are the lower chambers of the heart called?

Capillaries
Ventricles
Valves
Atria

Heart 101 | National Geographic

How blood moves through the heart and lungs (00:55 – 01:30)

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1. At the start of the cycle described, where does the blood enter first?

Aorta artery
Left ventricle
Right atrium
Pulmonary veins

2. Where is the blood rejuvenated?

In the brain
In the lungs
In the stomach
In the kidneys

3. By way of what vessel is fresh blood pumped throughout the body?

The pulmonary arteries
The capillaries
The mitral valve
The aorta artery

Heart 101 | National Geographic

Heartbeat facts, disruptions, and the circulatory network (01:30 – 02:42)

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1. How is the heartbeat described after the narrator says it happens with every heartbeat?

It’s relentless
It’s silent
It’s irregular
It’s optional

2. Which of these is mentioned as a condition that can disrupt a heartbeat?

Diabetes
Myocardial infarction
Asthma
Arthritis

3. About how many miles do the blood vessels span throughout the body, according to the video?

About 16,000 miles
About 6,000 miles
Over 600,000 miles
Over 60,000 miles

Heart 101 | National Geographic

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1. Which statement best summarizes the heart’s role in the circulatory system?

It filters the blood to remove waste.
It is the pump that keeps blood moving through the body.
It produces hormones that control growth.
It stores oxygen for emergencies.

2. What is the main purpose of the valves in the heart?

To open and close to help keep the blood moving
To stop the heart from beating too fast
To create oxygen in the blood
To connect veins directly to capillaries

3. What is the key difference between what happens in the lungs and what happens in the rest of the body in this cycle?

In the lungs blood is rejuvenated; in the body it delivers oxygen and nutrients.
In the lungs blood stops; in the body blood starts.
In the lungs blood becomes colder; in the body it becomes warmer.
In the lungs blood turns into air; in the body it turns into water.

Discussion Questions

Discuss the ideas from this video

Heart 101 | National Geographic

Why do you think the heart is described as “the pump at the center” of the circulatory system?
What parts of the heart (layers, chambers, valves) are easiest and hardest to remember? Why?
The video says the heartbeat is “relentless.” Do you think that word is a good choice? What does it suggest?
What habits or situations (for example, exercise or emotional excitement) have you noticed can change a person’s heartbeat?