Structure and Function of Organisms
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Lab 5: Crayfish physiology1. What gas is taken up during ventilation? ____________________ 2. What gas is released during ventilation? ____________________ 3. What molecule is broken down to generate energy? ____________ 4. During ventilation, gases enter and exit the circulatory system by the process of ______________. 5. The amount of water pumped by a crayfish past its gills is proportional to what? __________________________ 6. Why is nitrogen gas bubbled through the water in this laboratory exerise ?
7. In what direction do crayfish pump water? ____________________ 8. In the crayfish physiology lab, you will be taking oxygen concentration data readings every ____________ minutes. 9. Blood pressure is defined as _______________________________ 10. Vessels that carry blood away from the heard are called __________ 11. Blood pressure is highest at the time of ______________________ 12. The highest blood pressure reading is called the ________________ 13. During ventricular relaxation, you will measure the ______________ pressure. 14. A ____________________ consists of an inflatable armband, rubber bulb, and a pressure gauge. 15. The arm-band is initially inflated to a pressure that stops _____________________. 16. When you can first hear a pulse in the stethoscope, the gauge will measure the ______________ pressure. 17. In what units is blood pressure measured? ____________________ 18. The ___________________________ is characterized by a reduction in the pulse rate and the blood flow when someone places his/her face in water. 19. ______________________ are tiny vessels that connect the arteries to the veins. 20. Vessels that carry blood towards the heart are called ____________.
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