Respiratory Tract Histology And Structure Flashcards
What structures are present in the superior mediastinum?
What structures are present in the anterior mediastinum?
What structures are present in the middle mediastinum?
What structures are present in the inferior mediastinum?
What is the location of the lung hilum?
Between the 5th and 7th vertebrae, above the pulmonary ligament. It contains the pulmonary artery, bronchi and pulmonary vein.
Pneumonic for lung roots: RALS
Which structure is most superior in the left lung?
Pulmonary artery
Which structure is most superior in the right lung?
Pulmonary veins
Where is the tricuspid valve located?
Between the right atrium and right ventricle.
Where is the mitral valve located?
Between the left atrium and left ventricle.
Where do the coronary arteries arise from?
Root of the aorta
What are the branches of the left coronary artery?
Left anterior descending artery
Left circumflex artery which gives off posteriorly, the left marginal artery.
What are the branches of the right coronary artery?
Anteriorly, it gives off the right marginal artery.
Posteriorly, it gives off the right interventricular artery and the right
Most people are right coronary artery dominant because the posterior interventricular artery is a branch of it
What is the coronary sinus?
Located in the right atrium posteriorly where the coronary veins drain deoxygenated blood from the heart muscles into.
What are the cardiac veins?
Great cardiac vein
Small cardiac vein
Middle cardiac vein
When do the heart valves close?
During diastole, which allows coronary arteries to fill with oxygenated blood and distribute to the myocardium.
