Cardiovascular System Flashcards
1
Q
What influences early development of blood vessels?
A
- FGF and VEGF influence morphological changes in mesenchyme cells to promote vasculogenesis
2
Q
What are the components of a capillary bed?
A
- arterioles carry oxygenated blood into capillaries
- O2 and CO2, small molecules, and H2O exchange occurs,
- venules take deoxygenated blood away
3
Q
What are the three types of capillaries?
A
- continuous
- fenestrated
- discontinuous
4
Q
Where are fenestrated capillaries found?
A
- endocrine
- kidney
5
Q
Where are discontinuous capillaries found?
A
- bone marrow
- liver
- spleen
6
Q
Describe structure of lymphatic vascular system.
A
- begins as closed endothelial-lined capillaries
- travels through lymph nodes
- circulates lymph back to extremities
7
Q
Function of Lymphatic System
A
- collects fluid from lymphatic capillary beds
- trafficking network for immune cells
8
Q
What is the general structure of blood vessels?
A
- tunica intima
- endothelium
- connective tissue layer
- tunica media
- smooth muscle
- tunica adventitia
- connective tissue
9
Q
What are pericytes?
A
- inside basal lamina
- stabilize capillaries and venules
- part of blood brain barrier
10
Q
What are the categories of arteries?
A
- small to medium arteries
- muscular arteries
- elastic arteries
11
Q
What are the categories of veins?
A
- small to medium veins
- large veins (named)
- contain valves
12
Q
Arteries vs. Veins.
A
- Tunica Intima: both lined by endothelial cells, but cells in each can have different response to mediators
- Tunica Media: more robust in artery (more smooth muscle)
- Tunica Adventitia: may contain smooth muscle bundles in larger veins
