arteriole, the smallest artery on human scalp (magnification x250) this arteriole shows all three tunics (or layers). smooth muscle cells are prominent in the tunica media. the tunica intima shows the endothelium and nuclei. by vasoconstriction and va - endothelial stock pictures, royalty-free photos & images
simple squamous epithelium, small intestine, 250x - endothelial stock pictures, royalty-free photos & images
cross section biomedical illustration of capillary (blood vessel) showing endothelial cells and membrane - endothelial stock illustrations
artery wall; tunica intima, tunica media, tunica adventitia. cross section, 100x at 35mm. the tunica intima shows the endothelium & internal elastic membrane, the tunica media shows smooth muscle tissue, & the tunica adventitia has an abundance of c - endothelial stock pictures, royalty-free photos & images
capillary with red blood cells. in single file, also shows endothelium (center). human scalp. 200x h - endothelial stock pictures, royalty-free photos & images
large artery wall (sectioned). elastic fibers, 100x at 35mm. shows extremely abundant elastic fibers (red, connective tissue), an internal elastic membrane, & endothelium (lining). large arteries near heart are subjected to high pressures & show hig - endothelial stock pictures, royalty-free photos & images
arteriole with smooth muscle cells, longitudinal section, mesentery, 200x - endothelial stock pictures, royalty-free photos & images
capillary with red blood cells in single file. shows endothelium. human scalp. 400x - endothelial stock pictures, royalty-free photos & images
blood capillary in the brain with red blood cells - endothelial stock pictures, royalty-free photos & images
endothelium lining a blood vessel (venule), 500x - endothelial stock pictures, royalty-free photos & images
normal artery in cross section (magnification x100) h & e stain. three distinct layers or tunics: tunica interna (intima), tunica media, tunica externa (adventitia). also shows endothelium and lumen with red and white blood cells. - endothelial stock pictures, royalty-free photos & images
artery (human) with abundant elastic fibers and tunics (or layers) magnification 50x - endothelial stock pictures, royalty-free photos & images
blood vessel (venule) with numerous red blood cells (erythrocytes) longitudinal section, 250x - endothelial stock pictures, royalty-free photos & images
a comparison of an artery and vein showing the tunics (or layers) cross section, 50x - endothelial stock pictures, royalty-free photos & images
capillaries with red blood cells in rouleaux - endothelial stock pictures, royalty-free photos & images
neurofibromatosis, a genetic disorder of the nervous system. - endothelial stock pictures, royalty-free photos & images
simple squamous epithelium. endothelium (lining an artery) 250x. this epithelium lines the inside of blood vessels. it is extrememly flat, note flattened nuclei. also shows internal elastic membrane & smooth muscle in artery wall. - endothelial stock pictures, royalty-free photos & images
small vein (venule). cross section, 250x at 35mm. shows: tunica intima (with endothelium), tunica media (smooth muscle), tunica adventitia (blue, connective tissue). red blood cells are shown in the lumen. - endothelial stock pictures, royalty-free photos & images
vein cross section--endothelium and numerous red blood cells in the lumen, 250x - endothelial stock pictures, royalty-free photos & images
glycocalyx on endothelial cell surface, illustration - endothelial stock pictures, royalty-free photos & images
capillary with red blood cells in rouleaux (magnification x250) h & e stain. red blood cells (erythrocytes) can form stacks called rouleaux which can form and dissociate repeatedly, facilitating movement through the small capillaries. also shows capillary - endothelial stock pictures, royalty-free photos & images
blood vessels shows blood cells and endothelium 1000x v - endothelial stock pictures, royalty-free photos & images
lacteal in a villus in the small intestine--duodenum, 100x - endothelial stock pictures, royalty-free photos & images
Illustration of an atheromatous plaque, fatty build up in a medium caliber artery. The plaque slows blood flow, which can cause cardio-vascular...
Illustration of an sheath in a medium caliber artery. From outside to inside: -the tunica external or adventitia -the tunica media -the tunica intima...