Anatomy of the Heart Flashcards
Most posterior part of the heart
Left Atrium
Left atrial enlargement can result in dysphagia due to compressions of _________ & hoarsness due to compression of __________.
1) oesophagus
2) left recurrent laryngeal nerve (branch of the vagus nerve)
3 layers of the Pericardium (outer to inner)
1) Fibrous pericardium
2) Parietal layer of the serous pericardium
3) Visceral layer of the serous pericardium
Pericardial cavity lies between the
Visceral and parietal layers of the pericardium
The pericardium is innervated by the
Phrenic Nerve
Pericarditis can cause referred pain to
the neck, arms, or one or both shoulders often the left
Theme: Coronary blood supply
The left anterior descending and it’s branches supply
1) Anterior 2/3 of the interventricular septum
2) Papillary muscle
Theme: Coronary blood supply
The left anterior descending artery supplies
1) Anterior of the interventricular septum
2) Anterolateral papillary muscle
3) The anterior surface of the left ventricle
Theme: Coronary blood supply
The Posterior Descending Artery supply
1) AV node ( dependent on dominance)
2) Posterior 1/3 of the interventricular septum
3) Posterior 2/3 wall of the ventricles
4) posteromedial papillary muscles
Theme: Coronary blood supply The Right ( acute) marginal artery supplies
1) Right ventricle
Theme Coronary blood supply
The Right Circumflex artery supplies
1) SA node ( blood supply dependent on dominance)
Most commonly occluded coronary artery
Left anterior descending
Infarct of the Right circumflex artery can result in
Since the RCA supplies the SA node and infarct can result in nodal dysfunction ( heart block or breadycardia)
most common dominant circulation
Right dominant circulation ( 85%)
Right dominant circulation
Posterior descending artery arises from the Right Circumflex artery
