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7th Grade Unit 5: The Structure and Function of Body Systems Lesson 3:

7th Grade Unit 5: The Structure and Function of Body Systems Lesson 3: Respiratory and Circulatory Systems, and Flow of Blood Vocabulary of Instruction:. Alveoli. Tiny sacs of lung tissue specialized for the movement of gases between the air and the blood. Arterioles.

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7th Grade Unit 5: The Structure and Function of Body Systems Lesson 3:

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  1. 7th Grade Unit 5: The Structure and Function of Body Systems Lesson 3: Respiratory and Circulatory Systems, and Flow of Blood Vocabulary of Instruction:

  2. Alveoli • Tiny sacs of lung tissue specialized for the movement of gases between the air and the blood.

  3. Arterioles • The smallest divisions of the arteries located between the muscular arteries and the capillaries.

  4. Capillaries • Tiny little venules or vessels between the arteries which carry blood from the heart and veinsback to the heart.

  5. Diaphragm • A large, dome-shaped muscle that has an important function in breathing.

  6. Hemoglobin • Substance in red blood cells which conveys oxygen from the lungs to body tissues.

  7. Platelets • Tiny membrane-bound cell-like particles found in blood that carry materials important for the formation of clots.

  8. Trachea • The windpipe of the respiratory system.

  9. Venules • The minute vessels that collect blood from the capillary plexuses and join together to form veins.

  10. The Whole Picture

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