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National 4 Science

National 4 Science. Human Health The Heart and Circulation. The Heart. Learning Intentions: - What makes up the circulatory system? - What is the heart? - What does the heart do? - Which side of the heart is the thickest and why? - What is the purpose of heart valves?

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National 4 Science

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  1. National 4 Science Human Health The Heart and Circulation

  2. The Heart • Learning Intentions: - What makes up the circulatory system? - What is the heart? - What does the heart do? - Which side of the heart is the thickest and why? - What is the purpose of heart valves? - What high tech and what low tech instruments can monitor your heart?

  3. The Circulatory System Watch Dr Alice The Heart The circulatory system is composed of: - the heart - the blood vessels

  4. The Heart Blood from body Blood to body Blood to lungs Blood from lungs 3 1 Heart valve to prevent blood flowing backwards 2 4 LEFT muscular wall is THICKEST

  5. Which side of the heart is thickest? • Collect a heart diagram and stick it into your notes • The left side of the heart has a thicker muscular wall than the right side • Why do you think this is? • Chamber 4 has to pump blood all round the body whereas chamber 2 only pumps blood to the lungs

  6. Questions Using your diagram answer the following questions Which chamber receives blood from the body? Which chamber pumps blood to the lungs There are 4 valves in the heart what is their function? If a doctor wanted to listen to your heart beat what low tech instrument would he/she use?

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