Grade 6 Science & Technology · Strand 1: Living things and the Environment · Human Circulatory System
Circulatory Disorders Heart Attack
A short Grade 6 Science & Technology lesson for the CBE curriculum, part of Living things and the Environment: Human Circulatory System. Learn it on any phone with notes and slides, then check yourself with a quick quiz and earn XP. This lesson is free.
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5 questions from this lesson’s quiz. Start the lesson to answer them and see the right answers.
1. What is the main reason a heart attack happens?
- A. The lungs stop taking in air completely
- B. Blood supply to part of the heart muscle is suddenly cut off
- C. The heart muscle becomes too tired after playing football
- D. The blood becomes too watery to carry food
2. Which sequence correctly shows how a coronary artery becomes blocked?
- A. A clot forms, then the lumen widens, then plaque disappears
- B. Cholesterol plaque builds up, the artery narrows, then a clot plugs the gap
- C. The artery widens, cholesterol is lost, then blood flows faster
- D. Salt builds up in the lungs, then the heart stops pumping
3. Wanjiru has crushing chest pain and breathlessness that do not ease even after she sits and rests. How is this different from normal muscle tiredness after running?
- A. Normal tiredness gets worse with rest, but a heart attack improves with rest
- B. Normal tiredness is relieved by rest, but heart attack pain and breathlessness continue and need urgent medical care
- C. Both are treated by walking around until the pain passes
- D. There is no difference because both need a hospital
4. A man at a market in Nakuru suddenly has crushing chest pain and sweats heavily. What should you do FIRST?
- A. Tell him to walk around to clear the blockage
- B. Wait for an hour to see if the pain goes away
- C. Call for an ambulance or alert an adult immediately
- D. Give him a big meal to make him stronger
5. What is the name for the blood vessels that supply blood directly to the heart muscle? (Give the one-word adjective used to describe them.)
Type your answer in the lesson.
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