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Circulatory and Respiratory Systems

Circulatory and Respiratory Systems. Breathing, Blood, Keeping your Circulatory and Respiratory systems healthy!. A Breathtaking Feat!. Page 743 Amy Van Dyken’s story of success. Measuring your Breathing. Copy this Chart onto your paper. Hold your breath class averages.

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Circulatory and Respiratory Systems

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  1. Circulatory and Respiratory Systems Breathing, Blood, Keeping your Circulatory and Respiratory systems healthy!

  2. A Breathtaking Feat! • Page 743 • Amy Van Dyken’s story of success

  3. Measuring your Breathing • Copy this Chart onto your paper

  4. Hold your breath class averages • Copy this chart onto your paper. Avg.Time(s) # People

  5. Directions • 1. You will hold your breath for as long as you comfortably can. • 2. Record the time, in seconds, that you can hold your breath. • 3. Do 3 trials and calculate the average time it takes to hold your breath. • 4. Record and Graph class averages.

  6. Your Respiratory System • Your respiratory system brings in Oxygen from the air to your blood and releases Carbon Dioxide from the blood to the air.

  7. Parts of the Respiratory System • Nose- takes in Oxygen; filters air • pharynx-passage for air and food • larynx-contains vocal cords • Trachea-windpipe leads to 2 bronchi • bronchi-each bronchus leads to a lung • Lungs- contains muscles and air sacs where carbon dioxide in the blood is replaced by oxygen.

  8. Gas Exchange between systems • Alveoli- tiny air sacs at the end of the bronchioles where gas is exchanged between circulatory and respiratory systems.

  9. Breathing • Your diaphragm is a muscle below the lungs that does the work of breathing. • Adult lungs can hold up to 6 Liters of air. • Normally, only 0.5 liter of air is exchanged, but up to 5 L can be during heavy exercise.

  10. Nervous system and Breathing • You can control your breathing for a short period of time. • Your nervous system (brain stem!!) controls your breathing based on carbon dioxide levels.

  11. Tobacco and the Respiratory System • Tobacco smoke contains 3 dangerous substances: • Nicotine- increases blood pressure and heart rate • Tar- carcinogen • Carbon Monoxide-block the transport of oxygen to the tissues of the body.

  12. Respiratory Disorders • Bronchitis-bronchi clogged with mucus  simple activities are difficult • Emphysema-loss of elasticity in lung tissue  difficulty breathing • Lung Cancer:

  13. Path of Respiration • Draw a poster of the human respiratory system (pg. 747) • Number the organs in which they are used as oxygen enters the body and carbon dioxide leaves. Ex. 1- Nasal passage (nose)- air going through the nose is warmed up, filtered and water is added.

  14. The Circulatory System • Oxygen, nutrients and waste are moved around the body by the circulatory system. • This system also transports wastes away from the body.

  15. Three main parts of the Circulatory System • 1. Heart- main pump • 2. Blood- liquid tissue that holds blood cells • 3. Blood vessels- tubes that carry blood through the body of an animal a. Arteries-carry blood from heart to tissues b. capillaries-brings oxygen and nutrients to body. c. veins- returns blood to heart

  16. Parts of the Heart • Septum- Prevents mixing of oxygen-poor and oxygen-rich blood; divides heart • Atria- receives blood. Right Atrium: oxygen poor blood from body Left Atrium: oxygen rich blood from lungs. • Ventricles- pumps blood out of heart.

  17. Pulmonary Circulation • Right side of the heart pumps blood from the heart to the lungs. • Carbon Dioxide leaves blood; Oxygen enters blood.

  18. Systemic Circulation • Oxygen rich blood flows into the left side of the heart and is pumped to the rest of the body. • Oxygen poor blood is then returned to the right side of the heart.

  19. Disorders of the Circulatory System *Many due to build-up of fats (plaque) on the walls of the arteries **Arteries: Carry blood from the heart to the body. • High Blood Pressure: may lead to heart attacks and strokes • Stroke: blood clot may get stuck in a blood vessel leading to the brain. • Heart Attack- Tissue/ cell death.

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