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Respiratory and Circulatory Systems. Other Animal’s Respiration: . Sponge, hydra, planaria – diffusion from water Earthworm – skin Insect – spiracles and trachea lead to air sacs Fish – gills . Other Animal’s Circulation:. Sponge, hydra, planaria – diffusion Earthworm – aortic arches

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Respiratory and Circulatory Systems

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Respiratory and Circulatory Systems


Other Animal’s Respiration:

  • Sponge, hydra, planaria – diffusion from water

  • Earthworm – skin

  • Insect – spiracles and trachea lead to air sacs

  • Fish – gills


Other Animal’s Circulation:

  • Sponge, hydra, planaria – diffusion

  • Earthworm – aortic arches

  • Insect – dorsal heart

  • Fish – 2-chambered heart

  • Amphibian – 3 chambered heart

  • Reptile and bird – 3+ chambered heart


These systems are interrelated in humans


Anatomy of Our Respiratory System

Site of gas exchange


What happens when we breathe?


Problems with Respiration

  • Infection – colds, flu, pneumonia

  • Bronchitis

  • Asthma

  • cancer


Our blood actually takes two paths during circulation


Human Heart circulation

  • Pathway:

  • Enters heart from superior and inferior vena cavae

  • Right atrium

  • Right ventricle

  • Pulmonary arteries

  • To the Lungs

  • 4. Pulmonary veins

  • 5. Left atrium

  • 6. Left Ventricle

  • 7. Aorta

  • To the rest of the body


These are the arteries involved in heart attacks


Components of Blood


Blood Vessels


Problems of the Circulatory System

  • Heart attack

  • Angina

  • High blood pressure (hypertension)

  • Palpitations


The End


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