2.02 Understand the functions of the blood in the circulatory system

2.02 Understand the functions of the blood Essential questions: What are the functions of blood? 2.02 Understand the functions and disorders of the circulatory system 2

What are the functions of blood? Transportation What does the blood transport? Nutrients Oxygen Cellular waste products hormones Why is this an important function? Keeps us healthy 2.02 Understand the functions and disorders of the circulatory system 3

What are the functions of blood? Regulation How does the blood regulate heat? Moves your body heat that is put off by the skeletal muscles evenly around the body How does the blood regulate acid/base balance? By keeping acidity in a certain range that is conducive to life 2.02 Understand the functions and disorders of the circulatory system 4

What are the functions of blood? Protection What function of the blood serve to protect the body? Components of blood help to fight off infection. What is the relevance to health? Keeps the body healthy 2.02 Understand the functions and disorders of the circulatory system 5

Functions of the blood components Plasma Erythrocytes Leukocytes Thrombocytes 2.02 Understand the functions and disorders of the circulatory system 6

Plasma What is the role of plasma in circulation? Transports cellular components and aids in blood clotting Discuss its relevance to health. Viscosity Hemophilia Plasma Cellular elements 2.01 Remember the structures of the circulatory system 7

Erythrocytes What are the functions of erythrocytes? Transport oxygen to tissues and carbon dioxide away from cells What is the function of hemoglobin? Blood protein gives blood red color 8

Erythrocytes: Hemolysis Starts here What is it? Rupturing or bursting When does it occur? Usually during a blood transfusion What is the lifetime of an erythrocyte? 120 days What happens to old erythrocytes? They are broken down by the liver 2.02 Understand the functions and disorders of the circulatory system 9

RBC broken down Prematurely If severe treated with blood transfusion What is hemolytic anemia? How is it treated? RBC broken down Prematurely If severe treated with blood transfusion 2.02 Understand the functions and disorders of the circulatory system 10

Leukocytes What is the function of leukocytes? Fight infection Compare leukocytes to erythrocytes. RBC transport gases, WBC fight off foreign invaders 2.02 Understand the functions and disorders of the circulatory system 11

Leukocytes Agranulocytes WBC that fights off bacterial, Lymphocytes WBC that produces antibodies, produced in thymus and bone marrow Monocytes WBC that fights off bacterial, fungi, and viruses 2.02 Understand the functions and disorders of the circulatory system 12

Leukocytes Secretes heparin - prevents clotting Granulocytes Neutrophils Performs phagocytosis Eosinophils Fights off parasitic infections Basophils Secretes heparin - prevents clotting 2.02 Understand the functions and disorders of the circulatory system 13

Inflammation The body’s reaction to chemical, physical trauma, or disease producing microorganisms. t What is inflammation? 2.02 Understand the functions and disorders of the circulatory system 14

Inflammation 15

Thrombocytes What is the composition of thrombocytes? Smallest of solid components of blood, they are pieces of megakaryocytes What is their function? Necessary for the initiation of the blood clotting process 2.02 Understand the functions and disorders of the circulatory system 16

Thrombocytes 2.02 Understand the functions and disorders of the circulatory system 17

Blood types Inherited from parents Determined by presence or absence of an antigen on the surface of the red blood cell What are the types of blood? Where do they come from? 2.02 Understand the functions and disorders of the circulatory system 18

Blood types Someone with type A antigen has B antibodies Someone with type B antigen has A antibodies Someone with type AB antigen has no antibodies Someone with type O antigen has A and B antibodies AB is universal recipient O is universal donor 2.02 Understand the functions and disorders of the circulatory system 19