Lab Ex. 44 Blood Vessels

Tunica interna (intima) – entire layer

Endothelium (type of tissue is simple squamous)

Tunica media (tissue is smooth muscle)

Tunica externa (adventitia) – tissue is connective tissue

artery

arteriole

capillary

venule

vein

One-way valve

Oxygenated blood (red vessels)

Deoxygenated blood (blue vessels)