10: Clinically relevant anatomy of the heart Flashcards
A bit off topic, but what are the components of the hilum (root) of the lung?
Pulmonary artery
Main bronchus
Pulmonary veins
Pulmonary lymphatics and bronchopulmonary lymph nodes
Pulmonary visceral afferents & autonomic motor nerves
What do pulmonary visceral afferents do?
Refer pain signals from the lungs BACK to the central nervous system
Where in the mediastinum is the heart found?
Middle mediastinum
Where, relative to the roots of the lung, are the phrenic nerves found?
Anterior to the roots of the lung
Where, relative to the pericardium, are the phrenic nerves found?
Descending across the lateral borders of the pericardium
The phrenic nerves are commonly confused with the ___ ___.
vagus nerves.
Relative to the roots of the lungs, where are the vagus nerves found?
Posterior to the roots of the lungs
The phrenic nerves are branches of which spinal nerve(s)?
C3, C4 and C5
(Remember - C345 keep the diaphraghm alive.)
Parietal serous pericardium
Parietal visceral pericardium
Fibrous pericardium
Arrange in the correct order (superficial to deep).
What is the name of the space between the two layers of serous pericardium?
Pericardial cavity
What is another name for the visceral serous pericardium?
Epicardium
What does the visceral serous pericardium / epicardium secrete? What is its function?
Pericardial fluid
Acts as a lubricant.
What is the name given to the clinical condition in which the pericardial cavity fills with blood?
Haemopericardium
What is the consequence of haemopericardium on heart contraction?
Cardiac contraction is prevented
Haemopericardium can prevent cardiac contraction. What is this condition called?
Cardiac tamponade
What is pericardiocentesis?
Drainage of fluid from the pericardial cavity
What is the “bare area” of pericardium?
Area in which there is no overlying pleura, reducing the possibility of accidently causing a pneumothorax during pericardiocentesis
What name is given to the space within the pericardial cavity, found posterosuperiorly?
Transverse pericardial sinus
Describe the position of the transverse pericardial sinus in relation to the ascending aorta, pulmonary trunkandsuperior vena cava.
Posterior to ascending aorta and pulmonary trunk
Anterior to SVC