Flashcards in Surface Anatomy of Heart Deck (66)
What does the pericardiac sac consist of?
What does the fibrous part of the pericardial sac consist of?
Ligament to the stenum (sternopericardial ligament)
What happens to the ligament to the sternum?
It inferiorly blends with the diaphragm
What does the sternopericardial ligament do?
Holds the heart in place
What is the parietal layer?
The outer layer
What is the serous layer?
The inner layer
What does the serous layer attach to?
The heart and great vessels
How are the parietal and serous layers related?
It is one continuous layer that is reflected back on itself
What is found between the parietal and serous layers?
A thin layer of fluid
What does the thin layer of fluid between the parietal and serous layer do?
Gives a frictionless environment
What is the name of the nerves that supply the heart?
What are the nerve roots of the phrenic nerves?
C3, 4, 5
What do the phrenic nerves supply?
Motor and sensory to the diaphragm
Sensory to the pericardium
What is the course of the phrenic nerves?
They descend anterior to the lungs, and then the right descents over the right atrium, and the left over the left atrium
What is the heart surrounded by?
Dual layered pericardium
Where does the heart lie?
Deep to the sternum, inferior to the great vessels, and superior to the diaphragm
What is the anterior pericardial surface attached to?
The posterior surface of the sternum, via the sternopericardiac ligaments
What is the inferior pericardial surface fused with?
What consists the anterior surface of the heart?
Right atrium and ventricle
What consists the posterior surface of the heart?
Left atrium and ventricle
What is the left border of the heart?
What is the inferior surface of the heart?
What is the right border of the heart?
What are the blood vessels od the heart?
The coronary arteries and the cardiac veins
What do the blood vessels of the heart do?
Carry blood to and from most of the myocardium
Where to the coronary blood vessels run?
Across the surface of the heart, just deep to the epicardium, normally embedded in fat
What is the first branch of the aorta?
The coronary arteries
Where do the coronary arteries arise from?
From the left and right aortic sinuses
Where do the aortic sinuses arise from?
The root of the aorta, just superior to the aortic valve