Histology of the heart Flashcards
(10 cards)
What is the outermost layer of the heart called?
Visceral pericardium
What type of epithelium is pericardium?
Simple squamous
What is the function of purkinje fibres?
To transmit electrical impulses
How do myocytes of the SA node differ from normal myocytes?
They have no intercalated discs
What types of cells line the mitral valve?
Endothelial cells
Where in the heart are the “nodules of arantius” found?
In the aortic valve cusps
What yellow/brown pigment accumulates in cardiac myocytes with increasing age?
Lipofuscin
Name 3 features of the coronary arteries?
Are muscular arteries
Arise in the root of the aortic valve
Run in the epicardium
Where are “Weibel-Palade bodies” located and what do they contain?
Found in endothelial cells - they contain Von Willebrand factor (as well as other clotting factors).
What 3 ‘things’ definitely do not contain lymphatics?
Cartilage, Bone marrow and the Eye
