what is the tissue that lines blood capillaries?

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what is the tissue that lines blood capillaries?

and alveoli?

2007-09-18 13:57:43 · 2 answers · asked by Terri L 2 in Science & Mathematics ➔ Biology

2 answers

Endothelial tissue lines interior surfaces of the blood vessels. Endothelial tissues line the entire circulatory system and play a role in reducing the friction from flowing blood cells. Endothelial cells are also activated following tissue damage or an infection and will provide signals helping to direct white blood cells to the site of an infection.

Endothelial tissue is a special type of epithelium tissue.

2007-09-18 14:06:48 · answer #1 · answered by cl3v3r boy 3 · 0⤊ 0⤋

The blood vessels are lined with endothelial tissue. Capillaries are composed of endothelial tissue only. The alveoli are lined with simple squamous epithelial tissue.

2007-09-19 03:59:33 · answer #2 · answered by Ken W 3 · 0⤊ 0⤋