LAB 18

• The objective of Experiment 18 is to show how hyperemia and cyanosis are brought about as well as their important manifestation
• Congestion


  Active, arterial congestion
• Procedure for active congestion

  1. Wind a rubber band tightly around the second joint of your finger

  2. After two minutes notice the size and color of your finger

  3. Notice the color of the skin beneath the band

  4. Notice the temperature of the skin

  5. Explain all these changes

  6. What will be the result if the band is to remain for a long time
• Procedure for passive congestion

  1. Keep a finger (use different finger) in lukewarm water (30-45 secs)

  2. What changes occur?

  3. Explain

  4. Notice any other sensation besides the heat

  5. What is the cause of this?