Block3/Fig.5 Aorta, large (elastic) artery.

$block4_10.jpg - Fig.5 Aorta, large (elastic) artery. Arteries are classified bythe characteristics of the tunica media. The aorta is called anelastic artery because of the large amount of elastic material,arranged as lamellae, interspersed with the smooth musclecells of the tunica media. The elastic material may be seenbecause of its refractivity (stained lightly with eosin) withoutspecial stains. The tunica intima consists of a lining ofendothelial cells that rest on a thin layer of connective tissue.There are no elastic lamellae in the adventitia, but elasticfibers are present, though relatively few in number and can¡¦tbe observed by H&E stain.Brown adipose tissue is one of the two types of adipose tissue.Its primary purpose is to generate body heat. In contrast towhite adipocytes (fat cells) which contain a single, large fatvacuole, brown adipocytes contain several smaller vacuolesand centrally located nuclei.$

Fig.5 Aorta, large (elastic) artery. Arteries are classified by the characteristics of the tunica media. The aorta is called an elastic artery because of the large amount of elastic material, arranged as lamellae, interspersed with the smooth muscle cells of the tunica media. The elastic material may be seen because of its refractivity (stained lightly with eosin) without special stains. The tunica intima consists of a lining of endothelial cells that rest on a thin layer of connective tissue. There are no elastic lamellae in the adventitia, but elastic fibers are present, though relatively few in number and can¡¦t be observed by H&E stain.
Brown adipose tissue is one of the two types of adipose tissue. Its primary purpose is to generate body heat. In contrast to white adipocytes (fat cells) which contain a single, large fat vacuole, brown adipocytes contain several smaller vacuoles and centrally located nuclei.

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