Objective(s):After this unit, student should be able to:

1. Describe function of blood
   1. Describe role of oxygen, carbon dioxide and glucose in organisms in general terms
   2. Based on location (ie. muscle/intestine/lung/brain), explain whether oxygen/carbon dioxide/glucose are moving from tissue into blood or vice versa.
   3. Explain purpose of blood
      1. including molecules dissolved in the blood and their function
      2. cells in the blood and their function

(1) special features of erythrocyte shape

(2) contrast eruthrocyte shape with leuokocyte shape

Last Class:

Study textbook p 79-81& Review dimensional relationships:  L, mL, µL, cm^3, mm^3,

Today's Lesson:

1. Review questions:
   1. If 4 million red blood cells in 1 mm^3 of blood, what volume does a single erythrocyte have?
      • 1 mm^3 / 4,000,000 erythrocytes
      1. write answer in mm^3 (= 0.000,000,25 mm^3)
      2. write answer in mL (= 0.000,000,000,25 mL)
      3. write answer in µL (= 0.000,000,25 µL)
   2. If you have 3.8 L of blood in your body, and if 1 mm^3 has 4 million erythrocytes in it then how many  red blood cells are in your total blood?
      • See teacher for solution
2. Moody film on erythrocytes
   1. blood carries
      1. glucose for ________ [purpose]
      2. oxygen for ________ [purpose]
      3. carbon dioxide ________ [purpose]
      4. water ________ [purpose]
      5. buffers ________ [purpose]
      6. platelets ________ [purpose]
      7. erythrocytes ________ [purpose]
      8. leukocytes ________ [purpose]
   2. identify name of shape of red blood cell
      1. This shape provides 3 valuable properties:
         • _______________
         • _______________
         • _______________
3. Look at erythrocytes under microscope [next class]

Assignment: