20081017

20081017 - Lecture 20 Respiration page #1 Lecture 20...

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Lecture 20 Respiration page #1 Lecture 20 Respiration Integration of respiration and cardiovascular system: Cardiovascular system through cardiac output and peripheral resistance controls blood pressure minute-to-minute Renal system maintains control of volume on long-term basis. Together these assure BP will be adequate to circulate blood. Æ Blood flow integrated with O 2 content of blood. O 2 content determined by respiratory system. Respiratory design and comparative aspects 3 types of respiratory mechanisms 1) No specialized mechanism a) O 2 at surface is sufficient b) upper limit of size = 0.5 mm radius c) O 2 availability limited to length of diffusion pathway 2) Evagination of body surface – gills a) almost always aquatic ventilatory pump circulatory pump Hemoglobin P O2 O 2 conternt chemoreceptors baroreceptors O 2 supply blood flow blood pressure Renal system
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Lecture 20 Respiration page #2 3) Invagination of body surface – lungs, trachea of insects a) almost always used in air
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This note was uploaded on 11/16/2011 for the course PNB 2250 taught by Professor Renfro during the Spring '08 term at UConn.

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20081017 - Lecture 20 Respiration page #1 Lecture 20...

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