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End Show Slide 1 of 37 Copyright Pearson Prentice Hall WarmUp Answer the following questions: 1.What are the 3 main types of blood cells? What are their.

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Presentation on theme: "End Show Slide 1 of 37 Copyright Pearson Prentice Hall WarmUp Answer the following questions: 1.What are the 3 main types of blood cells? What are their."— Presentation transcript:

1 End Show Slide 1 of 37 Copyright Pearson Prentice Hall WarmUp Answer the following questions: 1.What are the 3 main types of blood cells? What are their functions? How would you identify them? 2.What is blood plasma – what is its function? Collect materials to complete your blood lab and begin working!!! SWB/IP book from counter (p.49) Slides and Blood figures up on front desk.

2 End Show Slide 2 of 37 Copyright Pearson Prentice Hall 37-3 The Respiratory System

3 End Show 37-3 The Respiratory System Slide 3 of 37 Copyright Pearson Prentice Hall The Human Respiratory System The respiratory system consists of the: Epiglottis Trache a Nose Pharynx Larynx Lungs Bronchus Mouth Diaphragm Bronchioles

4 End Show 37-3 The Respiratory System Slide 4 of 37 Copyright Pearson Prentice Hall What Is Respiration? In biology, respiration means different things. Cellular respiration is the release of energy from the breakdown of food in the presence of oxygen (occurs in the?????) At the organism level, respiration is the process of gas exchangethe release of carbon dioxide and the uptake of oxygen that occurs between RBCs and alveoli Breathing is the actual mechanical intake of air

5 End Show 37-3 The Respiratory System Slide 5 of 37 Copyright Pearson Prentice Hall Breathing BREATHING Lungs are sealed in pleural membranes inside the chest cavity. At the bottom of the cavity is a large, flat muscle known as the diaphragm.

6 End Show 37-3 The Respiratory System Slide 6 of 37 Copyright Pearson Prentice Hall Breathing During inhalation, the diaphragm contracts and the rib cage rises up. This expands the volume of the chest cavity. The chest cavity is sealed, so this creates a partial vacuum inside the cavity. Atmospheric pressure fills the lungs as air rushes into the breathing passages.

7 End Show 37-3 The Respiratory System Slide 7 of 37 Copyright Pearson Prentice Hall Breathing Often exhaling is a passive event. When the rib cage lowers and the diaphragm relaxes, pressure in the chest cavity is greater than atmospheric pressure. Air is pushed out of the lungs. Exhalation Rib cage lowers Air Exhaled

8 End Show 37-3 The Respiratory System Slide 8 of 37 Copyright Pearson Prentice Hall

9 End Show 37-3 The Respiratory System Slide 9 of 37 Copyright Pearson Prentice Hall How Breathing Is Controlled Breathing is controlled by the medulla oblongata. The medulla oblongata monitors carbon dioxide in the blood. As carbon dioxide increases, nerve impulses make the diaphragm contract, bringing air into the lungs. The higher the carbon dioxide level, the stronger the impulses.

10 End Show 37-3 The Respiratory System Slide 10 of 37 Copyright Pearson Prentice Hall So whats a hiccup? Longest bout of hiccups – 68 years!!! Check out IPp 50 for more info!

11 End Show 37-3 The Respiratory System Slide 11 of 37 Copyright Pearson Prentice Hall Lung Capacity Lab!! (well do next class) Objective Measure the amount of air your lungs can hold

12 End Show 37-3 The Respiratory System Slide 12 of 37 Copyright Pearson Prentice Hall The Human Respiratory System RESPIRATION Alveoli are grouped in clusters. A network of capillaries surrounds each alveolus. Pulmonary vein Capillaries Pulmonary artery

13 End Show 37-3 The Respiratory System Slide 13 of 37 Copyright Pearson Prentice Hall Gas Exchange RESPIRATION Gas exchange takes place in the alveoli. Oxygen diffuses into the blood. Carbon dioxide in the blood diffuses into the alveolus. Lets examine this up close Capillary O2O2 CO 2


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