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11 Cards in this Set
- Front
- Back
Gen Rt Ventricle
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forms the largest part of anterior heart surface, small part of diaphragmatic surface and almost entire inferior border of heart
-deoxy blood from rt atrium comes in and is pumped to lungs |
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trabeculae carnae
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irregular muscular elevations on the interior of r. ventricle
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papillary muscles
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-form conical projections with base on vent wall and tendinous cords arising from apices
-cords attached to adjacent sides of 2 cusps-prevent inversion and seperation of cusps (parachute) -begin contraction before systol closing tricuspid valve 3types- ant, post, septal |
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Papillary muscle types
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Anterior-largest, arise on ant wall, cords to ant and post cusps
Posterior-smaller and made up of several parts, from inferior wall, cords to post and septal cusps Septal- from interverntricular septum, cords to ant and septal cusps |
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septomarginal trabecular (moderator band)
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curved muscle bundle from inf part of interventricular septum to base of ant papillary
-carries part of the right bundle branch of the AV bundle(part of conductiong system to ant papillary |
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Supraventricular crest
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- thick muscular ridge which separates the ridged muscular wall of inflow part of chamber from the smooth wall of the conus arteriosus
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conus arteriosus
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arterial cone which leads into pulmonary trunk (on the superior part of r. ventricle)
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pulmonary valve
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Left, right and anterior semilunar cusps- concave when viewed superiorly; these project into artery but lie close to its walls as blood leave the r. ventricle; cusps uopen up like pockets as they catch reversed blood flow and completely close pulmonary opening to prevent significant amount of blood from returning to r. ventricle
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Nodule
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the center of each cusp (where it comes into contact with other cusps)
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Lunule
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the adjacent free edge of the cusp
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sinus
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superior to each valvespaces at the origin of the pulmonary trunk between the dilated wall of the vessel and each cusp of the pulmonary valve
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