The Circulatory System.pdf
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The document summarizes the functions and components of the circulatory system. It describes that the circulatory system delivers oxygen and nutrients to cells through the blood vessels and heart, removes carbon dioxide and wastes from cells, and fights infections. It provides details on the heart anatomy and chambers, blood composition of cells and plasma, and key functions of arteries, veins, and capillaries in transporting blood throughout the body.
The Circulatory System.pdf
- 2. Functions: 1. Delivers blood containing oxygen, nutrients, and hormones to cells 2. Takes carbon dioxide and other wastes from the cells 3. Fights infections and diseases
- 3. Functions: 4. Regulates body temperature 5. Helps stabilize pH and ionic concentration of body fluids
- 5. HEART Beats at an average of 72 per minute Pumps blood all throughout the body
- 8. Left side – carries oxygenated blood Right side – carries deoxygenated blood
- 9. BLOOD VESSELS Serves as the “highway” for the blood to go to its destination Three types: artery, vein, and capillary
- 10. ARTERY Has the thickest wall Carry oxygen-rich blood away from the heart to the diff. organs of the body (except for pulmonary arteries ) aorta arterioles
- 11. CAPILLARY Smallest blood vessel; blood flows in a single line Has thin walls Wastes from the cells are removed through them Responsible for the distribution of nutrients and oxygen to the cells Connects artery to the vein
- 12. VEIN Thinner walls than arteries Carries deoxygenated blood to the heart ( except pulmonary veins ) Superior and inferior vena cava venules
- 14. BLOOD Body fluid that circulates all throughout the body Bring oxygen, nutrients and hormones Removes carbon dioxide and metabolic wastes Fights infections and diseases Regulates body temp
- 15. BLOOD Body fluid that circulates all throughout the body Composed of blood cells and plasma Light, yellow liquid Largest component
- 16. BLOOD Body fluid that circulates all throughout the body Composed of blood cells and plasma Blood cells: red blood cells, white blood cells, platelets
- 17. Red Blood Cells (RBC) Also known as erythrocyte; formed in bone marrow Biconcave disk shape, no nucleus Contains hemoglobin, life span of 120 days
- 18. White Blood Cells (WBC) Also known as leucocytes Protects the body against infections Has life span of 3 days to few months bacteria viruses fungi
- 19. Platelets Also known as thrombocytes Smallest blood cell among cells Responsible for blood clotting No nucleus and is irregular shape