zLAB 5 - 2/24/08 Lab 5: Crayfish Physiology, Cardiovascular...

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2/24/08 Lab 5: Crayfish Physiology, Cardiovascular Physiology,  and Living Circulation PURPOSE: The purpose of these labs is to observe ventilation/circulation in crayfish, humans, and  vertebrates and how they change in various environmental/physiological conditions. ABSTRACT: This lab was composed of three experiments, the main one involving crayfish ventilation.  Students obtained a crayfish and placed it in a prepared container where the concentration of  oxygen inside the water could be controlled and the volume of water ventilated through the  crayfish could be measured. Once the crayfish was inside its waterproof seal, the students began  collecting and recording the volume of high-oxygen concentrated water ventilated through the  crayfish every 5 minutes for 30 minutes, as well as noting the oxygen level. After 30 minutes the  students ceased providing oxygen and began pumping nitrogen into the water, and 30 more  minutes of 5 minute observations was done. After this process is complete, the nitrogen was 
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This note was uploaded on 04/08/2008 for the course BIO 206L taught by Professor Unknown during the Spring '08 term at University of Texas at Austin.

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zLAB 5 - 2/24/08 Lab 5: Crayfish Physiology, Cardiovascular...

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