Heart Flashcards
0
Q
What does the subendothelial layer contain?
A
Loose CT, elastic and collagen fibers, smooth muscle.
1
Q
What are the 3 major layers of the heart?
A
The endocardium, the myocardium, and the epicardium.
2
Q
Where is the subendocardial layer?
A
Between endocardium and myocardium
3
Q
What does the subendocardium contain?
A
Nerves, veins, and Purkinje fibers
4
Q
What is the thickest layer of the heart?
A
Myocardium
5
Q
How is cardiac muscle arranged?
A
Spirally around each chamber
6
Q
What epithelium does the epicardium have?
A
Simple squamous
7
Q
Where is the conducting system of the heart located?
A
Within the subendocardial layer and adjacent myocardium
8
Q
What nerve exhibits parasympathetic control over the heart rate and slows it?
A
Vagus nerve
