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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: 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 • The smallest divisions of the arteries located between the muscular arteries and the capillaries.
Capillaries • Tiny little venules or vessels between the arteries which carry blood from the heart and veinsback to the heart.
Diaphragm • A large, dome-shaped muscle that has an important function in breathing.
Hemoglobin • Substance in red blood cells which conveys oxygen from the lungs to body tissues.
Platelets • Tiny membrane-bound cell-like particles found in blood that carry materials important for the formation of clots.
Trachea • The windpipe of the respiratory system.
Venules • The minute vessels that collect blood from the capillary plexuses and join together to form veins.