Presentation on theme: "The Circulatory System"— Presentation transcript:
1 The Circulatory System Getting oxygen and nutrients where they need to be!
2 Circulatory System: The Function To deliver oxygen and nutrients to cellsTo remove wastes from cells and deliver to excretory organs (kidneys and lungs)
3 Circulatory System: Vocabulary OxygenatedContains oxygenDeoxygenatedContains little or no oxygenPulmonary:Vessels dealing with the LUNGSSystemic:Vessels dealing with the BODYCoronary:Vessels dealing with the HEART itself
4 Circulatory System: The Parts Heart:Muscle that pumps blood to body AND lungsArteries:THICK vessels that carry blood AWAY from heartTO lungs or TO bodyVeins:THIN vessels that carry blood TO heartFROM lungs or FROM bodyMay have valves to keep blood flowing towards the heartCapillaries:TINY, TINY blood vessels that connect arteries to veinsOne cell thick to allow for diffusionGAS EXCHANGE OCCURS IN CAPILLARIES!
6 Circulatory System: The Heart Pericardium:Protective sac that surrounds the heartMyocardium:Contractions pump blood through heartSeptum:Thick wall that separates the two sides of the heart
7 Circulatory System: The Heart con’t… Atrium (pl. atria):Two UPPER chambers of the heartRight atrium receives blood from the bodyLeft atrium receives blood from the lungsVentricles:Two LOWER chambers of the heartRight ventricle receives blood from the right atriumLeft ventricle receives blood from the left atriumValves:Prevent “backflow” of bloodLocations:Between atrium and ventricleBetween ventricles and major arteriesThroughout blood vessels in the body (VEINS)
9 Circulatory System: Arteries Blood vessels that carry blood AWAY from the heart to body or lungsMajor arteries:AORTA:Carries OXYGENATED blood from LEFT VENTRICLE to the BODYPULMONARY ARTERIES:Carry DEOXYGENTATED blood from RIGHT VENTRICLE to LUNGSONLY ARTERIES IN BODY THAT CARRY DEOXYGENTATED BLOOD!
10 Circulatory System: Veins Blood vessels that carry blood TO heart from body or lungsMajor veins:SUPERIOR VENA CAVA:Carries DEOXYGENATED blood from UPPER BODY to the RIGHT ATRIUMINFERIOR VENA CAVA:Carries DEOXYGENATED blood from LOWER BODY to the RIGHT ATRIUMPULMONARY VEINS:Carry OXYGENATED blood from the LUNGS to the LEFT ATRIUMONLY VEINS IN BODY THAT CARRY OXYGENATED BLOOD!