Topic 46 - Lymphatic vessels Flashcards
1
Q
What is lymphatic vessels?
A
- Drainage vessel system.
* Begins with lymph capillaries in tissues
2
Q
What is their function?
A
carry excess extracellular fluid into circulation
3
Q
What is Lymphatic capillaries?
compare to blood capillaries
A
-fine tube-like spaces lined by endothelium. Wider and more irregular shaped than the blood capillaries and never contain blood corpuscles. Lack lamina basalis and pericytes. Collect into lymphatic vessels.
4
Q
Lymphatic vessels (histologically resemble veins) Tunica intima
A
endothelium + subendothelial CT
5
Q
Lymphatic vessels (histologically resemble veins) Tunica media
A
circular smooth muscle + few elastic fibres
6
Q
Lymphatic vessels (histologically resemble veins) Tunica adventitia
A
longitudinal smooth muscle + collagen fibres