Intro to Sports Medicine Mrs. Frasca Anatomy of the HEART Intro to Sports Medicine Mrs. Frasca

HEART FUNCTION To circulate blood around the body Blood delivers oxygen, nutrients, and transports waste All body systems are dependent on the heart

Basic Anatomy: Chambers Four Chambers: -Right Atrium -Right Ventricle -Left Atrium -Left Ventricle

Basic anatomy: Valves Heart Valves open and close allowing blood to flow to the appropriate places at the appropriate times Heart Valves (4): Tricuspid Pulmonic Mitral or Bicuspid Aortic

Basic anatomy: nodes Nodes comprised of specialized tissue that contain both muscle and nervous tissue and are part of the Cardiac conduction system! Two Nodes of the heart: Sinoatrial Node (SA node) Coordinates contractions by sending Electrical impulses that travel through the walls of the heart to make it contract. Atrioventricular Node (AV node) Receives electrical signal from SA node and delays it for about a 10th of a second then relays the ectrical signals to the atrioventricular bundle to deliver an impulse to the rest of the heart.

NODE VIDEO http://www.youtube.com/watch?v=zdoSreUAthA

DRAW AND LABLE ACTIVITY! ---------Pulmonary arteries Aorta Superior Vena Cava------------------ ----------Pulmonary Veins ------------------------Left Atrium Right Atrium-------------------- ----------------------Aortic Valve AV node------------------------------ -----------Mitral (Bicuspid valve) ----- Meeting Notes (10/13/14 10:14) ----- Students draw out heart then lable structures one by one. Tricuspid Valve ---------------------- --------------------------Left Ventricle <------------------------------------Pulmonary Valve Right Ventricle ---------------- Inferior Vena Cava-------

video http://www.youtube.com/watch?v=oE8tGkP5_tc

Direction of blood flow 1.Superior & Inferior Vena Cava 2. Right Atrium Tricuspid valve 3. Right Ventricle Pulmonary Valve 4. Pulmonary Arteries 5. LUNGS! 6. Left pulmonary veins 7. Left Atrium Mitral Valve 8. Left Ventricle aortic valve ascending aorta - OUT TO THE BODY! Add picture that has the direction of blood flow as a diagram… add to each slide where direction of blood flow is discussed.

Draw and label activity! Blood Flow:

HEART sounds Lub Dub What are Doctors Listening For? BICUSPID & TRICUSPID VALVES CLOSING = LUB PULMONARY & AORTIC VALVES CLOSING = DUB What are Doctors Listening For? Two clicking sounds each beat as valves shut at two different times each beat. Extra clicks and whooshing sounds suggest that valve system is not sealing correctly and is malfunctioning!

hEART PROBLEMS HEART DISEASE: narrowing of the small blood vessels that supply oxygen to the heart– fatty plaque build up in the blood stream HEART MURMER: a low grade sound that is caused by insufficient blood flow through the heart HEART ATTACK: occurs when blood flow to apart of your heart is blocked for a long enough time that part of the heart muscle is damaged or dies