The integument of the foot is divided into 5 types, perioplic, coronary, laminar, solar and cuneate that are continuous with one another but the boundaries are abrupt.
In fact, because the integument of the foot does not have adnexal epidermal structures that project into the dermis and subcutaneous tissue except for the merocrine glands present in the frog, a direct corollary of the classical partial thickness skin wound does not exist in the foot.
Lacerations of the integument of the foot are less common than they are in skin because the rigid nature of the stratum corneum causes the hoof to fracture rather than tear, which usually causes the tissues to avulse from the underlying structures.
Above, it is connected by fibrous tissue to the lateral cartilage and front part of the cartilage of the septum; below, it falls short of the margin of the naris, the ala being completed by fatty and fibrous tissue covered by skin.
The integument of the dorsum and sides of the nose is thin, and loosely connected with the subjacent parts; but over the tip and alæ it is thicker and more firmly adherent, and is furnished with a large number of sebaceous follicles, the orifices of which are usually very distinct.
The arteries of the external nose are the alar and septal branches of the external maxillary, which supply the alæ and septum; the dorsum and sides being supplied from the dorsal nasal branch of the ophthalmic and the infraorbital branch of the internal maxillary.
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