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42 Cards in this Set
- Front
- Back
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What artery leads from the left coronary artery?
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Left anterior descending artery
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Which vein does the coronary sulcus branch from?
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Great cardiac vein
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What are the three layers of the pericardium?
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Fibrous pericardium
Parietal pericardium Visceral pericardium (epicardium) |
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Which muscles are the chordinae tendinae attached to?
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Papillary muscles?
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What are the two semi-lunar valves? Where are they found?
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Pulmonary and Aortic
Found in the pulmonary arteries and aorta |
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What is the function of the epicardium?
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Secrete fluid from squamous cells
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What separates the ventricles and atria?
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Interventricular septum, marked by the anterior and posterior sulcus
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What does the myocardium consist of?
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Muscle fibres
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What does the small cardiac vein lead into?
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Coronary sinus
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What is the pericardial cavity?
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fluid cavity from secretions from the serous membrane
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Name the two AV valves
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Bicuspid (mitral)
Tricuspid |
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Where is the tricuspid found?
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Between the right atrium and right ventricles
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What is the location of the heart?
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Underneath the sternum in the mediastinum compartment
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What is the mediastinum surrounded by?
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Pleural cavity
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What are the auricles?
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Appendages on the top of the atria, right is bigger
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What does the coronary sulcus separate?
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Atria and ventricles
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What does the pericardial sac cover?
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Major blood vessels
Heart |
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Where is the posterior inventricular artery located?
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Lies between the interventricular sulcus
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What are the main branches of the left coronary artery?
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left circumflex branch
anterior interventricular branch |
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What artery supplies the left atrium and ventricles?
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Left circumflex artery
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Where do all the veins of the heart meet?
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Coronary sinus which opens into the right atrium
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Where are the smaller veins found?
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Wall of the right heart
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What is the sinus venarum?
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smooth part between the two vena cavae, located in right atrium
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What are pectinate muscles?
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Bundles of muscle fibers in the auricle of right atrium
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What are the fossal ovils?
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Remains of where the foramen ovale were which allowed passage from the right atrium to left atrium
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What connected the pulmonary artery and aortic arch?
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ductus arteriosus
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The ductus venosus...
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connected the umbilical vein to inferior vena cava
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Oxygenated blood entered the fetus via
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The umbilical vein from the placenta
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The umbilical artery
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took deoxygenated blood from the fetus to the placenta
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How did the oxygenated blood by pass the liver?
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By the ductus venosus to the vena cava
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Where is the SA node?
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Between the superior vena cava and inferior/superior pulmonary veins
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Where is the AV node?
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In the right atrium inferior to fossal ovils
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What are trabeculae carnae?
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thick muscle fibres in the right atrium
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What are the next two layers following the epicardium, what do these three layers form?
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Myocardium
Endocardium Muscle wall of the heart |
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What is the function of the endocardium?
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Inner surface of the heart which covers the tendons and valves
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How are cardiac muscle cells connected?
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Intercalated discs
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Which cell junctions do they contain?
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Gap junctions
Desosomes |
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What are the importance of gap junctions?
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Allow the passage of ions for action potentials to spread across the heart
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Which artery does the great cardiac vein drain blood from?
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Anterior descending artery
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What does the right coronary artery supply?
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Both ventricles and right atrium
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Where does the right coronary artery lead?
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Marginal arteries
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What is an important characteristic of cardiac tissue?
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autonomic
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