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Section 30-1 “Respiratory & Circulatory Systems ” Write everything that is underlined.

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Presentation on theme: "Section 30-1 “Respiratory & Circulatory Systems ” Write everything that is underlined."— Presentation transcript:

1 Section 30-1 “Respiratory & Circulatory Systems ” Write everything that is underlined

2 30.1 Respiratory and Circulatory Functions KEY CONCEPT The respiratory and circulatory systems bring oxygen and nutrients to the cells

3 30.1 Respiratory and Circulatory Functions I. The respiratory and circulatory systems work together to maintain homeostasis The circulatory system transports blood and other materialsThe circulatory system transports blood and other materials –brings supplies to cells –carries away wastes –separates oxygen-poor and oxygen-rich blood

4 30.1 Respiratory and Circulatory Functions nose sinus mouth epiglottis trachea lungs The respiratory system is where gas exchange occursThe respiratory system is where gas exchange occurs –picks up oxygen from inhaled air –expels (gets rid of) carbon dioxide and water

5 30.1 Respiratory and Circulatory Functions The respiratory system moves gases into and out of the blood The lungs contain the bronchi, bronchioles, and alveoliThe lungs contain the bronchi, bronchioles, and alveoli Millions of alveoli give the lungs a huge surface areaMillions of alveoli give the lungs a huge surface area The alveoli absorb oxygen from the air you inhaleThe alveoli absorb oxygen from the air you inhale alveoli bronchiole

6 30.1 Respiratory and Circulatory Functions Breathing involves the diaphragm and muscles of the rib cageBreathing involves the diaphragm and muscles of the rib cage Air flows from areas of high pressure to low pressureAir flows from areas of high pressure to low pressure Air inhaled. Muscles contract and rib cage expands. Diaphragm flattens and moves downward. Air exhaled. Muscles and rib cage relax. Diaphragm relaxes and rises.

7 30.1 Respiratory and Circulatory Functions veins arteries II. The circulatory system moves blood to all parts of the body The system includes the heart, arteries, veins, and capillariesThe system includes the heart, arteries, veins, and capillaries –heart pumps blood throughout body –arteries move blood away from heart (Artery Away) –veins move blood back to heart –capillaries get blood to and from the cells

8 30.1 Respiratory and Circulatory Functions The respiratory system exchanges oxygen and carbon dioxide with the blood inside the body and the outside airThe respiratory system exchanges oxygen and carbon dioxide with the blood inside the body and the outside air The circulatory system moves that blood around the body and back to the lungsThe circulatory system moves that blood around the body and back to the lungs They are working togetherThey are working together


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