10-Circ&immun-42+43-S08

10-Circ&immun-42+43-S08 - 1 Circulation and Immune...

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Unformatted text preview: 3/3/2008 1 Circulation and Immune function Circulation and Immune function Figure 40.9b An example of negative feedback: Control of body temperature (Layer 1) Figure 40.9b An example of negative feedback: Control of body temperature (Layer 2) Furnace of Life: Furnace of Life: Positive feedback: Positive feedback: • a system of receptors, control center, and effectors • results in a change away from the norm – instability! • Amplifies systems – rare • Exp/ child birth - contractions Change is good! Change is good! • the only time systems are at perfect equilibrium is when the organism is dead! • the environment is always changing so organisms need means to respond • so each system has the ability to change in response to external and internal stimuli. Circulation: Circulation: Question: What is the purpose of a circulatory system? 3/3/2008 2 Circulation: Circulation: Question: What components would you need for a circulatory system? Circulation: Circulation: • Simple = used by primitive organisms to transport gases, nutrients and waste thru simple Types of circulatory systems: Types of circulatory systems: body Exp/ Cnidarians Figure 42.1 Internal transport in the cnidarian Aurelia Circulation: Circulation: • Simple = used by primitive organisms to transport gases, nutrients and waste thru simple Types of circulatory systems: Types of circulatory systems: body. Exp/ Cnidarians • Open = used by many invertebrates. Moves hemolymph through sinuses in the body. Exp/ Arthropods, Molluscs Figure 42.2 Open circulatory systems Circulation: Circulation: • Simple = used by primitive organisms to transport gases, nutrients and waste thru simple body. Exp/ Cnidarians Open used by many invertebrates Types of circulatory systems: Types of circulatory systems:...
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This note was uploaded on 05/18/2008 for the course BIOL 211B taught by Professor Lowe/zahn during the Spring '08 term at CSU Long Beach.

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10-Circ&immun-42+43-S08 - 1 Circulation and Immune...

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