Cardio Part 1- 2 Flashcards
What cells of the cardio system have a mesenchymatous origin?
Perictyes
Are have elongated nucleus and cytoplasmic projection with their own basal lamina?
Pericytes
What partially encircle endothelial cells in capillaries and venules?
Pericytes
What are capable of contractility?
Pericytes
Paracrine communication with endothelium for pericytes is through =
Angiogenesis
What is the formation of new blood vessels?
Angiogenesis
Where are capillary beds the most abundant in?
Organs with high metabolic rate
Proportion of capillaries with opened lumen depends on ________________ _____________
Metarterioles sphincters
What are the narrowest branches of arterioles, surrounded by smooth muscle, and branching into capillaries?
Metarterioles
What are examples of organs with capillary beds?
Kidney, liver, cardiac and skeletal muscle
What is the following portion of a blood vessel?
Simple squamous epithelium
Subendothelium
Internal elastic membrane
Intima
What is the following portion of a blood vessel?
Smooth muscle
Connective tissue
Media
What is the following portion of a blood vessel?
Connective tissue
Vasa vasorum
Adventitiia
What are arterioles and venules that supply blood to media/adventitial layers
Vasa vasorum
