The gland-ducts are enlarged, patulous or plugged with sebaceous and epithelial matter.
This mesenchymic muscle is less common than epithelial muscle.
The relations of the epithelial pocket bearing this lever are somewhat peculiar.
Cancer of bone always is secondary to cancer in some epithelial organ.
Fig. 21, A , represents the relation between the nervous masses and the epithelial tube in the first instance.
They become congested, the tubes get choked up with epithelial growth, and the disease is established.
Is there really evidence of any part of either retina or optic nerve being formed from the epithelial lining of the tube?
The presence of the rod-like features in the epithelial cells is perhaps in favour of the latter view.
Each oar-blade consists of the long hair-lashes of a group of epithelial cells glued together.
In this specimen the epithelial covering was very thick and the papill enlarged.
epithelium ep·i·the·li·um (ěp'ə-thē'lē-əm)
n. pl. ep·i·the·li·ums or ep·i·the·li·a (-lē-ə)
Membranous tissue composed of one or more layers of cells separated by very little intercellular substance and forming the covering of most internal and external surfaces of the body and its organs.
The thin, membranous tissue that lines most of the internal and external surfaces of an animal's body. Epithelium is composed of one or more layers of densely packed cells. In vertebrates, it lines the outer layer of the skin (epidermis), the surface of most body cavities, and the lumen of fluid-filled organs, such as the gut or intestine.