Chapter42 Animals Respiration

Chapter42 Animals Respiration - Animals: Respiration We...

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Animals: Respiration Animals: Respiration We need energy!!
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Outline Outline 1. Key Concepts 2. 3. Human Respiratory System 4. Transportation of O 2 and CO 2 5. Smoking and diseases 6. Key terms
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Key Concepts: Key Concepts: 1. Multicelled animals require the most energy to drive metabolic activities 2. Aerobic respiration produces the most ATP Aerobic respiration (sometimes called cellular respiration): glucose + O 2 CO 2 + H 2 O + E (ATP)
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Key Concepts: Key Concepts: 3. Respiration (Gas exchange) allows animals to move oxygen into their internal environment and give up carbon dioxide to the external environment 4. Oxygen diffuses into the body as a result of pressure gradients, and Carbon dioxide diffuses from cells to air down a gradient
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Respiratory surface – cell membrane across which respiratory gases are exchanged (a. surface area b. moist condition) 1. Body surface: planarian flatworm, no circulatory system and A. the body is flattened, all cells close to external oxygen supply. B. digestive cavity highly branched, carry food also oxygen to all regions of the body.
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Body surface: Earthworm, have circulatory system, oxygen diffused through body surface come to circulatory system. CO
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This note was uploaded on 05/05/2008 for the course BIO 52010 taught by Professor Zhao during the Fall '07 term at University of Texas at Austin.

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Chapter42 Animals Respiration - Animals: Respiration We...

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