Anatomy: Heart Flashcards
What innervates the Fibrous Pericardium?
- Vagus Nerve (ventral rami of C3-C5): sensory fibers
- Vagus Nerve: function unkown
- Sympathetic Trunks: vasomotor
What connects the pericardium to the posterior surface of the sternum?
The sternopericardial ligament.
How many layers of pericardium are there? Describe some differences between them.
Serous: visceral and parietal layers, parietal is fused with fibrous
Fibrous: in between lungs and heart, attached by sternopericardial ligaments
How many pericardial sinuses are there?
Transverse: posterior to pulmonary trunk and aorta and anterior to SVC. This is where heart surgeons divert blood flow during heart surgery.
Oblique Pericardial: posterior to heart, inferior to cardiac veins and posterior to IVC.
Where are the following: pericarditis, cardiac tamponade, and pericardiocentesis?
- pericarditis: inflammation of the pericardium.
- cardiac tamponade: too much fluid accumulates, prevents heart from fulling expanding.
- pericardiocentesis: drawing off fluid with a wide bore needle, insert needle through left 5h or 6th intercostal space.
What supplies blood to the heart? Where do they arise from?
R/L coronary arteries. They arise from the aortic sinuses.
How does the heart muscle drain?
Mainly veins drain into the coronary sinus which drains into the right atrium directly.
Where does the Right Coronary Artery Arise from?
Anterior Aortic Sinus
Where does the Left Coronary Artery arise from?
Left Posterior Aortic Sinus
What is the Crist Terminalis?
Internal ridge that separates smooth from rough surface of the right atrium.
What is the fossa ovalis?
What used to be the hole that connected the R and L atrium.
What are the veins that open directly into the Right Atrium?
IVC
SVC
Coronary Sinus
Anterior Cardiac Veins
