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cardio system S7

QuestionAnswer
Describe how deoxygenated blood enters and leaves the heart Deoxygenated blood from lower body enters heart inferior vena cava, deoxygenated blood from the higher parts of body enters right atrium through superior vena cava. blood then pushed to right ventricle through valve, then out out via pulmonary artery
What is the cable system Superior and inferior vena cava
Tributaries veins
Branches arteries
From heart where does pulmonary arteries take deoxygenated blood To lungs for oxygenation
Name the two parallel muscular pumps of the heart pulmonary(goes to lungs) and systemic pump
How does oxygenated blood enter the heart Via four pulmonary veins to LA then LV and out of heart via aorta
P wave Arteriole systole phase
Systole Muscle contracts to push blood to another chamber of the heart
Diastole Muscle relaxes to allow blood to move into the chamber
P wave tricuspid valve opens(RA undergoes atrial systole) releasing blood into right ventricle
QRS complex Q= ventricular systole R= Blood traveling from right right ventricle out of pulmonary artery to lungs S=
T wave Blood leaves to vessels
Location of heart Heart sits on central tendon of diaphragm, Sits in an area behind manubrium and sternum called mediastinum
Three parts of inferior mediastinum Anterior Medial (heart sits here) Posterior
Structures found in posterior mediastinum Major blood vessels
Angle of louis Angle between manubrium and sternum
Borders of the heart 1) left 2) Right 3) superior 4) Inferior
Surfaces of the heart 1) sterno-costal 2) Diaphragmatic 3) Pulmonary( on the sides)
Surface anatomy of the apex of the heart 5th intercostal space
Function of fibrous pericardium Prevents overstretching Provides protection Anchors the heart
Serous pericardium Divided into a) parietal pericardium b) Visceral pericardium (secretes serous fluid)
Coronary groove Separates atrium and ventricle
Interventricular groove Separates left and right ventricle
Structures draining into right atrium superior- inferior vena cava Coronary sinus
where does the heart gets its blood supply from Coronary arteries
Musculi pectinati This type of muscle only found in the right atrium
Fossa ovalis explained When in womb= Foramen ovalis, how oxygenated/deoxygenated blood travels to and from left and right atriums of child in womb. Closes when baby is born and becomes Fossa ovalis
Do arteries and veins mix? No, except for when they are in the digestive system
Created by: Brenty
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