Circulatory System Components and Functions
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Circulatory System Components and Functions
- 2. GENERAL FUNCTIONS •Responsible in carrying/transporting different substances (oxygen, food materials, hormones) •Responsible in removing carbon dioxide and other wastes from tissues bringing them to the organs where they are to be eliminated
- 4. Components of the Circulatory System
- 5. BLOOD
- 7. FUNCTIONS: Transports oxygen from lungs to tissues and carbon dioxide from tissues to lungs Carries food materials from small intestines to different parts of the body Brings waste materials to kidneys for excretion Distribute heat to nucleus, thus helping in regulation of body temperature
- 8. Transports secretions (hormones) from glands to tissues Involved in salt and water balance Protects the body form foreign substances through phagocytic action of lymphocytes
- 27. BLOOD VESSELS
- 33. Great Saphenous Vein the major superficial vein of the medial leg and thigh It is the longest vein in the human body, extending from the top of the foot to the upper thigh and groin.
- 38. THE HEART
- 39. CHAMBERS OF THE HEART
- 40. VALVES of the HEART
- 58. BLOOD CIRCULATION Occurs simultaneously Pulmonary and Systemic Circulation
- 69. What is Aneurysm? - Caused by high blood pressure, atherosclerosis, trauma, heredity and abnormal blood flow at the junction where arteries come together
Editor's Notes
- Hormones are chemical messengers. They affect many different processes including growth and development, metabolism, sexual function, reproduction and mood.
- ICF – INTRACELLULAR FLUID; body fluids found within the cells ECF – EXTRACELLULAR FLUID; body fluids found outside the cells ISF – Interstitial fluid – tissue fluid; fluid outside of the body’s cells and outside of the blood vessels ; it bathes the outside of the cell and makes up about 75% of the ECF
- Hemostasis – a process in stopping bleeding
- Albumin and globulin – transport subs i.e. fatty acids, hormones, and vitamins Albumin – regulate osmotic pressure and blood volume Some globulin fight viral and bacterial infections Fibrinogen - protein that clots blood
- Jugular vein - any of several large veins in the neck, carrying blood from the head and face.
- Varicose veins Normally, veins return blood from the rest of your body to your heart, so the blood can be recirculated. To return blood to your heart, the veins in your legs must work against gravity. Varicose veins may be caused by weakened valves (incompetent valves) within the veins that allow blood to pool in your veins instead of traveling to your heart
- The heart is located a little to the left of the chest; accommodated by the left lung…. Inter-atrial septum Intraventricular septum
- Right Atrium – receives blood from Systemic Veins and Coronary Sinus Right Ventricle – Receives the blood and will bring it to the lungs Left Atrium – received blood from the lungs via pulmonary veins Left ventricle – received blood from left atrium and bring to all parts of the body via aorta
- Tricuspid Valve – Right atrio-ventricular valve Bicuspid Valve – Left atrio-ventricular valve; mitral valve Pulmonary Semilunar Valve Aortic Semilunar Valve
- When the network in the atria contracts, blood in the atria flows into the ventricles When the ventricles contract, blood flows out of the heart
- The pulmonary circulation is the portion of the circulatory system which carries deoxygenated blood away from the right ventricle of the heart, to the lungs, and returns oxygenated blood to the left atrium and ventricle of the heart.