1. OBJ: Given notes, activity sheet SWBAT explain blood composition, blood types and the function of the Lymphatic System with 70% accuracy. BRING IN TEXTBOOK DN: HW check- A Closer Look at Blood Vessels Booklet; Watch Video: Blood, Blood Types ACT: Introduction to Blood and Lymph (Notes) Text, Read p. 91-97, Work on Blood & Lymph Booklet Watch Video: Lymphatic System HW: Complete Blood & Lymph Booklet; Work on CRE Review Sheets; CRE EXAM, March 9; INERH EXAM, March 20.

2. Blood & Lymph Notes Blood Composition: plasma, red blood cells, white blood cells, platelets; produced by the red bone marrow. Plasma: liquid part; 90% water, 10% nutrients (glucose, fat, vitamins, minerals), waste: “CO 2, water vapor”, proteins, chemical messengers.

3. Red Blood Cells: carries oxygen to body cells; contains hemoglobin (iron protein); lifespan 4 months; if blood bright red, oxygen present, if blood dark red/brown, no oxygen present

4. Blood & Lymph Notes White Blood Cells: disease fighting cells; lifespan months-years; specialized cells Example: –Cells: alarm system (T-cells & B-cells) –Cells produce chemicals (antibodies) to fight invasion –Cells that attack the invaders Immune System (WBC’s) Platelets: clot blood; produces fibrin protein

5. White Blood Cells (T cells, B cells): disease fighting cells red = red blood cells orange = T cells green = platelets helper T cell → ← B cell

6. Blood & Lymph Notes Blood Types: A, B, AB, O; three allele types: A, B, O Universal Receiver: AB Universal Donor: O

7. Transfusion: transfer of blood from one organism to another organism; if blood clumps, clogs capillaries, results in death

8. Blood & Lymph Notes Blood Type: surface molecules found on red blood cells Rh Factor: also surface molecules found on red blood cells –If Rh +, have Rh factor –If RH -, don’t have RH factor –If Rh- but have received RH+ blood, leads to clumping of blood and death

9. Rh Factor

10. Blood & Lymph Notes Lymphatic (Filtering) System: cleans and returns fluid to Circulatory System Lymph: contains water, glucose, white blood cells Lymph Nodes: traps invaders microorganisms (bacteria); node – “filter”

11. Lymphatic System