2.  List the functions of the circulatory and respiratory systems.

3. I can identify the components of the circulatory system.

4.  The circulatory system is composted of blood, blood vessels, lymphatic system, and the heart.  Together they serve as a transportation system, where materials are transported to and from the cells.

5.  The fluid circulated  through the circulatory system by the heart.  8 percent of the total weight of an animal is blood.  The blood is closed of plasma, blood cells, and palates.

6.  The fluid component of blood that accounts for 50-60 percent of the bloods volume.  Plasma is approximately 90 water.  The remaining 10 percent consist of small amounts of digested food nutrients, hormones, gases, and waste products.

7.  Blood cells are neither red or white.

8.  Red blood cells or erythrocytes, are formed in the red bone marrow.  These cells contain hemoglobin, an iron containing protein.

9.  Hemoglobin aids in the transport of oxygen and carbon dioxide and is responsible for giving blood its red color.

10.  White blood cells, or leucocytes, are fewer in number than the red blood cells but are larger in size.

11. WHITE BLOOD CELLS  Have nucleus  Motile  Not confined to the blood  Will move to areas of inflammation to engulf and destroy invading organisms  YouTube - White Blood Cell Chases Bacteria YouTube - White Blood Cell Chases Bacteria RED BLOOD CELLS  No nucleus  Not motile  Confined to the blood

12.  Platelets are small and easily damaged blood cells that occur in large numbers in the blood.  They attach themselves to injuries in blood vessels of damaged tissue and will release enzyme.

13.  The enzyme leads to the formation of fibrinogen.  Fibrinogen is the vital component in the clotting of blood

14. SYSTEMIC SYSTEM  Transports blood to all body tissues except the lungs PULMONARY SYSTEM  Transports blood to the lungs and back to the heart.  YouTube - Systemic and Pulmonary Circulation YouTube - Systemic and Pulmonary Circulation

15.  There are three types of blood vessels  Arteries  Capillaries  Veins

16.  Blood vessels that carry blood away from the heart.  Arteries carry oxygenated blood to body tissues, except the pulmonary artery.  Arteries divide into smaller branches called arterioles.  Arterioles carry blood to capillaries

17.  Tiny blood vessels that connect arteries with the veins.  Nutrients and oxygen diffuse through the capillary walls into body tissues.  Carbon dioxide and other waste products pass through the capillary walls and are carried away from body tissue.

18.  Blood vessels that carry blood toward the heart.  Blood flow in veins is only permitted to flow towards the heart; this is controlled by valves that open at regular intervals.

19.  Consist of the lymph vessels, lymph nodes, and lymph fluid, returns excess lymph to the circulatory system.  Lymph filters through the capillary walls into the spaces between the cells to take nutrients and hormones to cells to carry waste products back to the circulatory system.

20.  Lymph nodes filter out infectious organisms such as bacteria and viruses.  Swollen lymph nodes are often a sign of disease.

21.  The heart is the major organ of the circulatory system.  The heart consist of three layers, the myocardium, endocardium, and the epicedium.  YouTube - Heart4 YouTube - Heart4