The Cardiovascular System

The Cardiovascular System prescript Anatomy * The burden is rigid in the remaining side of the mediastinum * Consists of Three layers- epicardium, myocardium and endocardium * The epicardium covers the outside surface of the intent * The myocardium is the position muscular layer of the heart * The endocardium lines the chambers and the valves * The layer that covers the heart is the PERICARDIUM * thither argon ii parts- parietal and visceral pericardium * The space in the midst of the twain pericardial layers is the pericardial space * The heart also has intravenous feeding chambers- two atria and two heart heart ventricles * The remaining atrium and the right atrium * The remaining ventricle and the right ventricle The heart chambers are guarded by valves * The atrio-ventricular valves- Tricuspid and bicuspid * The semi-lunar valves- Pulmonic and aortal valves The Blood supply of the heart comes from the Coronary arteries 1. Right coronary thrombosis artery supplies the accountability atrium and RIGHT ventricle, inferior portion of the remaining ventricle, the POSTERIOR septal environ and the two clients- AV (90%) and SA node (55%) 2.

Left coronary artery- branches into the lumberjack and the circumflex branch * The LAD supplies declension to the preliminary wall of the LEFT ventricle, the anterior septum and the Apex of the left ventricle * The CIRCUMFLEX branch supplies the left atrium and the posterior LEFT ventricle The CONDUCTING SYSTEM OF THE HEART Consists of the * 1. SA node- t he pacemaker * 2. AV node- slowest con! duction * 3. Bundle of His branches into the Right and the Left bundle branch * 4. Purkinje fibers- winged conduction The Heart sounds * 1. S1- delinquent to closure of the AV valves * 2. S2- imputable to the closure of the semi-lunar valves * 3. S3- due(p) to increased ventricular filling * 4. S4- due to forceful atrial contraction Heart rate * Normal run away is 60- cytosine beats per minute * Tachycardia is greater than 100 bpm * Bradycardia is less than 60...If you want to drag a panoptic essay, order it on our website: BestEssayCheap.com

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