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Circulatory and Respiratory Systems

Circulatory and Respiratory Systems. EQ: How does our body provide cells with O 2 and nutrients and removes waste and CO 2 ?. How Circulatory System Maintains Homeostasis. The respiratory and circulatory systems work together to maintain homeostasis

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Circulatory and Respiratory Systems

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  1. Circulatory and Respiratory Systems EQ: How does our body provide cells with O2 and nutrients and removes waste and CO2?

  2. How Circulatory System Maintains Homeostasis • The respiratory and circulatory systems work together to maintain homeostasis • The circulatory system transports blood and other materials. • Brings supplies to cells • Carries away wastes • Separates oxygen-poor and oxygen rich blood

  3. Respiratory System maintaining homeostasis • The respiratory system is where gas exchange occurs • Picks up oxygen from inhaled air • Expels carbon dioxide and water - What process is this similar too?

  4. Respiratory System • Structure • Nose, sinuses, pharynx, trachea, lungs • Function • Brings in O2 for cells; gets rid of CO2 and water vapor

  5. Respiratory System • Gas exchange occurs in the alveoli of the lungs • Oxygen and carbon dioxide are carried by the blood to and from alveoli

  6. Respiratory System • Breathing is regulated by the brain stem • Smoking is the leading cause of lung disease.

  7. Reviews Questions • Where in the lungs does gas exchange happen? • How is our breathing rate regulated?

  8. Circulatory System • Structure • Heart, Blood vessels, blood, lymph nodes, lymphatic vessels • Function • Transports oxygen, nutrients, wastes; helps regulate body temperature; collects fluid lost from blood vessels and returns it to circulatory system.

  9. Circulatory System • The heart pumps blood through two main pathways. • Pulmonary circulations occurs between the heart and the lungs • We pick up oxygen in the lungs and then bring it to the heart

  10. Circulatory System • Systemic circulation occurs between the heart and the rest of the body. • Oxygen-rich blood goes to organs, extremities • Oxygen-poor blood returns to heart

  11. Circulatory System • Arteries, veins and capillaries transport blood to all parts of the body • Arteries carry blood away from the heart • Veins carry blood back to the heart • Capillaries move blood between veins, arteries and cells • The vessel where gas exchange happens in our body cells

  12. Review Questions • What are the two main pathways of blood circulation in our body? • Which blood vessel takes blood away from the heart? • Which blood vessel takes away carbon dioxide and provides oxygen to our cells?

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