Notes in L29 Heart

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Published 10/28/2024 4d28eaa2b62e41bba3e2f4378f4f9bdc-oa-1
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Published 10/28/2024 The pericardium has two main layers:{{c1::Fibrous}} pericardium: the outer, protective layer.{{c1::Serous}} pericardium: lines the inside of…
Published 10/28/2024 The {{c2::pericardial cavity}} is the {{c1::potential}} space between the parietal and visceral layers of the pericardium, contain…
Published 10/28/2024 layers of the heart wall- The {{c1::Myocardium}} is made up of cardiomyocytes connected by intercalated discs, responsible for contract…
Published 10/28/2024 The pericardium is innervated by the {{c1::phrenic}} nerve (C3-C5), meaning pain from conditions like pericarditis or&nb…
Published 10/28/2024 {{c1::Cardiac tamponade}} occurs when fluid or blood accumulates in the {{c2::pericardial sac}}, often due to causes like a ruptured aortic …
Published 10/28/2024 {{c1::Trabeculae carneae}} are mesh-like muscle ridges in the left and right ventricles 
Published 10/28/2024 The {{c1::chordae tendineae}} are fibrous cords that connect the papillary muscles to the {{c2::mitral}} and {{c2::tricu…
Published 10/28/2024 The {{c1::Moderator band (or septomarginal trabecula)}} is a muscular structure in the right ventricle that prevents overdistentio…
Published 10/28/2024 {{c1::Left atrial}} enlargement due to {{c2::mitral valve stenosis}} can lead to compression of the {{c2::esophagus}}, causing&nbs…
Published 10/28/2024 The {{c1::cardiac skeleton}} is a fibrous structure made of dense {{c2::collagen}} that forms {{c2::four}} fibrous rings, whi…
Published 10/28/2024 Heart Valves{{c1::Tricuspid}} Valve: {{c2::Right atrioventricular (AV) valve::valve type}} located {{c2::between the right atrium and right …
Published 10/28/2024 Heart Sounds:First heart sound (S1): Closing of the {{c1::mitral}} and {{c1::tricuspid}} valves and beginning of {{c1::systol…
Published 10/28/2024 Blood Supply to MyocardiumLeft Coronary Artery (LCA):{{c1::Anterior Interventricular Artery (LAD)}}: supplies the front of the heart.{{c1::Left Circum…
Published 10/28/2024 Drainage of the MyocardiumVeins Draining into the {{c1::Coronary Sinus}} → {{c1::Right}} Atrium{{c2::Great Cardiac Vein}}{{c2::Posterior Cardiac Vein}…
Published 10/28/2024 The {{c1::right and left coronary arteries}} supply blood to the heart muscle. They fill during {{c1::ventricular diastole}} when …
Published 10/28/2024 heart conduction system1. {{c1::Sinoatrial (SA) Node}}: Acts as the {{c2::pacemaker}}, located at the upper end of the {{c2::crista terminalis}}, gene…
Published 10/28/2024 The SA and AV nodes receive their innervation from the {{c1::vagus::parasympathetic}} nerve and {{c1::cardiopulmonary splanch…
Published 10/28/2024 The{{c1:: cardiac plexus }}is located just in front of the tracheal bifurcation and contains sympathetic, parasympathetic, and visceral…
Published 10/28/2024 Cardiac Plexus Motor InnervationParasympathetic: {{c1::Vagus Nerve::nerve}} releases {{c1::acetylcholine (Ach)::neurotransmitter}}, which sl…
Published 10/28/2024 Cardiac Plexus Sensory InnervationParasympathetic afferents: {{c1::CN IX and X::2 nerves}} monitor blood pressure through {{c1::barorec…
Published 10/28/2024 {{c1::Pericardium}} = a closed sac around heart containing serous fluid for lubrication and prevents sudden overfilling 
Published 10/28/2024 The {{c1::visceral layer (epicardium)}} is a {{c2::serous epithelium}} that is {{c2::closely applied to the heart}}. It is continuous with the parieta…
Published 11/03/2024 The pericardium {{c1::parietal layer}} is comprised of two layers – the {{c2::serous epithelium}} that is continuous with the visceral layer&nbsp…
Published 10/28/2024 2 sinuses formed by reflections of pericardium:-{{c1::transverse sinus}}: {{c2::above the entry of the 4 pulmonary veins::location?}}-{{c1::oblique si…
Published 11/03/2024 Describe the circulation of blood through the heart:1. returns to heart after supplying body via: {{c1::superior & inferior vena cavae}}enter…
Published 10/28/2024 The {{c1::pectinate}} muscles are found in the {{c2::right & left atria}}
Published 10/28/2024 The {{c1::crista terminalis }} is a smooth ridge separating 2 embryological regions and gives rise to the origin of the {{c2::pectinate musc…
Published 10/28/2024 {{c1::Moderator band}} assists in carrying impulses to {{c2::papillary muscles}} milliseconds before ventricle contracts. This causes {{c2::papil…
Published 11/03/2024 Blood vessels that can be used in a coronary artery bypass graft:{{c1::saphenous vein, internal thoracic artery, or radial artery}}
Published 11/03/2024 The mediastinum is divided into a {{c2::superior and inferior}} mediastinum, and the inferior mediastinum is divided into the {{c1::anterior, middle, …
Published 10/28/2024 The palpillary muscles can be found in the {{c1::right ventricle.}}
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