Vascular biology II Flashcards
What are the three types of capillaries?
- Continuous2. Fenestrated3. Sinusoidal
What type of junctional complexes do continuous capillaries have?
Tight junctions (complete or incomplete)
What are the main characteristics of continuous capillaries?
- Tight junctions2. Lack pores or fenestrae3. Numerous pinocytotic vesicles4. Well-developed basal lamina
Where are continuous capillaries found?
- Brain2. Muscle3. Connective tissue4. Exocrine glands
What are the characteristics of fenestrated capillaries?
- Fenestrae / pores2. Pores closed by thin diaphragm3. Continuous basal lamina
Where are fenestrated capillaries found?
Areas of rapid exchange:1. Kidney, nonglomerular2. Endocrine glands3. Intestines4. Kidney, glomerulus - diaphragms absent
What are the characteristics of sinusoidal capillaries?
- Discontinuous endothelial lining - large openings2. Discontinuous or absent basal lamina3. Macrophages present
Where are sinusoidal capillaries found?
Areas of rapid exchange where cells can be exchanged: 1. Red bone marrow2. Liver3. Spleen4. Adrenal cortex
Which veins possess longitudinal bundles of smooth muscle in the adventitia?
IVC, SVC, brachiocephalic, renal, iliac
Vasculogenesis: definition
De novo vessel formation
De novo vessel formation
Vasculogenesis
Angiogenesis: definition
Growth from pre-existing EC-derived channels
Growth from pre-existing EC-derived channels
Angiogenesis
Arteriogenesis: definition
Formation of arteries, arterioles and collateral vessel remodeling
Formation of arteries, arterioles and collateral vessel remodeling
Arteriogenesis