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The human circulatory system 2.0
- 1. 1.What do you call an organ in your body that serves as the entrance of air for respiration? ____ _____ _____ _____ N
- 2. 1.What do you call an organ in your body that serves as the entrance of air for respiration? ____ _____ _____ _____ N O E S
- 3. 2.What do you call an organ in your body that is responsible for the gas exchange? ____ _____ _____ _____ _____ G
- 4. 2.What do you call an organ in your body that is responsible for the gas exchange? ____ _____ _____ _____ _____ G N S L U
- 5. 3. What do you call the thin skeletal muscle that sits below the lungs? ____ _____ _____ _____ _____ _____ _____ _____ _____ R M D
- 6. 3. What do you call the thin skeletal muscle that sits below the lungs? ____ _____ _____ _____ _____ _____ _____ _____ _____ R M D I A P H A G
- 7. 4. What is the secondary external opening of the respiratory system? ____ _____ _____ _____ _____ O
- 8. 4. What is the secondary external opening of the respiratory system? ____ _____ _____ _____ _____ O M U T H
- 9. 5. It is the passageway of food, liquid and air? ____ _____ _____ _____ _____ _____ R
- 10. 5. It is the passageway of food, liquid and air? ____ _____ _____ _____ _____ _____ R T O A H T
- 11. _____ _____ _____ _____ _____
- 12. _____ _____ _____ _____ _____ B L D O O
- 13. _____ _____ _____ _____ _____
- 14. _____ _____ _____ _____ _____ E A R T H
- 15. ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___
- 16. ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ B L D O O S E V L E S
- 17. Circulatory System Parts and Function
- 18. Circulatory System - is a set of organs that maintain the flow and transport of fluids containing vital substances to different parts of the body.
- 23. The Heart Located near the center of your chest Hollow structure Composed almost entirely of muscle About the size of your clenched fist
- 24. The Heart Enclosed in a protective sac called the pericardium
- 25. The Heart The heart contracts about 72 times per minute Pumps about 70mL of blood with each contraction.
- 26. The Heart The right and left sides of the heart are separated by a septum, or wall. The septum prevents the mixing of oxygen rich and oxygen poor blood.
- 27. The Heart On each side of the septum are two chambers. The upper chamber (receives blood) is the atrium. The lower chamber (pumps blood out of heart) is the ventricle.
- 28. The Heart The heart has a total of 4 chambers: 2 atriums 2 ventricles
- 29. Valves As the heart contracts, blood flows into the ventricles and then out through the ventricles. Flaps of connective tissue, called valves, are located between the atria and ventricles. Blood moving keeps the valves open.
- 30. Valves There are also valves that stop blood from re- entering the ventricles after the blood has left. This system of valves keeps blood moving in one direction which increases the pumping efficiency of the heart.
- 31. Valves
- 32. Blood Vessels As blood moves through the circulatory system it moves through 3 types of blood vessels: Arteries Capillaries Veins
- 33. Arteries Large vessels Carry blood from heart to tissues of body Carry oxygen rich blood Thick walls-need to withstand pressure produced when heart pushes blood into them.
- 34. Capillaries Smallest blood vessels Walls are only one cell thick and very narrow. Important for bringing nutrients and oxygen to tissues and absorbing CO2 and other waste products.
- 35. Veins Once blood has passed through the capillary systems it must be returned to the heart. Done by veins Walls contains connective tissue and smooth muscle. Largest veins contain one way valves that keep blood flowing toward heart. Many found near skeletal muscles. When muscles contract, blood is forced through veins.
- 37. Disorders of Circulatory System Atherosclerosis Fatty deposits (plaque) in walls of arteries Deposits can obstruct flow of blood which can raise blood pressure Increases risk of blood clots If clot breaks free it can obstruct blood flow to tissues.
- 38. Disorders of Circulatory System Heart Attack Due to atherosclerosis, coronary arteries may become blocked (blood can’t get to heart muscle) Heart muscle begins to die due to lack of O2
- 39. Disorders of Circulatory System Stroke Blood clot may break free and block a vessel leading to the brain. Brain cells are starved of oxygen and nutrients Loss of function may occur Can cause paralysis, loss of ability to speak or death.
- 40. Blood Composed of plasma and blood cells Types of Cells are: Red Blood Cells White Blood Cells Platelets
- 41. Blood Plasma Straw colored 90% water 10% dissolved gases, salts, nutrients, enzymes, hormones, wastes, and proteins.
- 42. Blood Red Blood Cells Most numerous type Transport oxygen Get color from hemoglobin Disk shaped Made in red bone marrow Circulate for 120 days
- 43. Blood White Blood Cells Guard against infection, fight parasites, and attack bacteria Number of WBC’s increases when body is fighting Lymphocytes produce antibodies which fight pathogens and remember them
- 44. Blood Platelets Aid the body in clotting Small fragments Stick to edges of broken blood cell and secrete clotting factor to help form clot.
- 45. Blood
- 46. Blood Clotting Problems Hemophelia Genetic disorder that disrupts clotting People must be very careful to avoid injury Can be treated by injecting extracts that contain the missing clotting factor.
- 49. • Its withered • Not enough nourishment • Not enough sunlight
- 51. • Its healthy • It looks lively • It can give you fruit.
- 52. PLANTS HUMANS
- 53. PLANTS HUMANS
- 54. PLANTS HUMANS
- 56. •Right eating habits •Regular exercise
- 57. QUIZ TIME! 1.What is an organ located near the center of your chest and entirely made up of muscle? 2. It is the type of blood responsible for blood clotting. 3. What do you call the type of blood that is responsible for fighting germs and viruses? 4.It is the pathway of blood. 5. How many chambers does the heart have?
- 58. ANSWERS 1.Heart 2. Platelets 3. White blood cells 4. Blood vessels 5. 4 chambers
- 59. ASSIGNMENT 1. What is nervous system? 2. If you accidentally spilled hot milk on you, what is your initial reaction? 3. Have you been injected of anesthesia? How’s the experience?