OBJ: Given notes, activity sheet SWBAT explain blood composition, blood types and the function of the Lymphatic System with 70% accuracy.

BRING IN TEXTBOOKDN: 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.

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: “CO2, water vapor”, proteins, chemical messengers.

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

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

White Blood Cells (T cells, B cells): disease fighting cellsred = red blood cellsorange = T cellsgreen = platelets

helper T cell →

← B cell

Blood & Lymph NotesBlood Types: A, B, AB, O;

three allele types: A, B, O

Universal Receiver: AB

Universal Donor: O

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

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

Rh Factor

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”

Lymphatic System

Lymphatic System