Gross anatomy of the heart WK7 L4 Flashcards
WHAT IS THE CIRCULATORY SYSTEM?
HEART - BLOOD VESSELS - BLLOD - LYMPHATIC SYSTEM
WHAT IS IN THE CARDIOVASCULAR SYSTEM?
HERAT - ARTERIES - VEINS - CAPILLARIES
WHAT IS THE PULMONARY CIRCUIT?
(RIGHT SIDE) PUMPS DEOXYGENATED BLOOD TO LUNGS VIA LEFT AND RIGHT PULMONARY ARTERIES FOR GAS EXCHANGE - THEN PUMPS OXYGENATED BLOOD BACK TO HEART VIA 4 PULMONARY VEINS
WHAT IS THE SYSTEMIC CIRCUIT?
(LEFT SIDE) SUPPLIES OXYGENATED BLOOD TO ORGANS VIA AORTA - BRINGS DE OXYGENATED BLOOD FROM TISSUES TO RIGHT ATRIUM VIA SUPERIOR AND INFERIOR CAVA
WHAT IS THE LAYER CALLED THAT IS AROUND THE HEART?
PERICARDIUM
WHAT IS THE PERICARDIUM?
SERUS MEMBRANE THAT ENCLOSES THE HEART
WHAT DOES THE PERICARDIUM DO?
FORMS A BARRIER AROUND THE HEART AND STOPS THE HEART FROM OVER EXPANDING - STOPS ORGANS RUBBING OR TUGGING
HOW MANY LAYERS DOES THE HEART WALL HAVE?
3
WHAT ARETHE THREE DIFFRENT LAYERS OF THE HEART WALL?
EPICARDIUM - MYOCARDIUM - ENDOCARDIUM
WHAT IE THE EPICARDIUM?
SEROUS MEMBRANCE WHICH COVERS HEART
WHAT IS THE MYOCARDIUM?
THICK MUSCULAR LAYER AND FIBROUS SKELETON OF HEART - PROVIDES STRUCTURAL SUPPORT AND ATTACHMENT FOR CARDIAC MUSCLE
WHAT IS THE ENDOCARDIUM?
SMOOTH INNER LINING OF EPITHELIAL TISSUE
HOW MANY CHAMBERS DOES THE HEART HAVE?
4
WHAT ARE THE 4 HEART CHAMBERS?
R AND L ATRIUM - R AND L VENTRICLES
WHAT ARE THE R AND L ATRIUM?
SUPERIOR CHAMBERS OF THE HEART
WHAT DO THE THE R AND L ATRIUM DO?
R ATRIUM RECIEVES BLOOD RETURNING TO THE HEART FROM SUPERIOR AND INFERIOR VENA CAVA - L ATRIUM RECIEVES RECIEVES BLOOD RETURNING TO THE HEART FROM PULMONARY VEINS
WHAR ARE THE R AND L VENTRICLES?
TWO INFERIOR LARGER CHAMBERS
WHAT DO THE R AND L VENTRICLES DO?
R VENTRICLE PUMPS BLOOD INTO PULMONARY TRUNK - L VENTRICLE PUMPS BLOOD INTO ASCENDING AORTA
WHAT SEPPERATES THE TWO ATRIUM?
INTER ATRIAL SEPTUM
WHAT ARE THE PECTINATE MUSCLES?
INTERNAL RODGES OF MYOCARDIUM IN RIGHT ATRIUM AND BOTH AURICLES
WHAT SEPPERATES THE TWO VENTRICLES?
INTERVENTRICULAR SEPTUM
WAHT IS THE TRABECULAE CARNEAE?
INTERNAL RIDGES IN BOTH VENTRICLES
WHAT ARE THE VALVES OF THE HEART?
ATRIOVENTRICULAR VALVES (AV) - SEMILUNAR VALVES
WHAT DO THE ATRIOVENTRICULAR VALVES DO?
PREVENTS BACKFLOW OF BLOOD INTO ATRIA
WHAT TYPES OF ATRIOVENTRICULAR VALVES ARE THERE?
R AV VALVE HAS TRICUSID VALVE - L AV VALVE HAS MITRAL AND BISCUPID VALVE - CHORDAE TENDINAR (HEART STRINGS)
WHAT DO THE SEMILUNAR VALVES DO?
CONTROL BLOOD FLOW INTO GREAT ARTERIES AND PREVENT BLOOD BACKFLOW INTO VENTRICALES
WHAT TYPES OF SEMILUNAR VALVES ARE THERE?
AORTIC VALVE AND PULMONARY VALVE
