Page 133 - My FlipBook
P. 133
THE SKIN. 143
The Epidermis is that portion of the skin which is separated from the
deeper structure in the formation of a blister. It is clearly demonstrated,
as it constitutes the thin wall or covering of the blister. It comprises
Fig. 71.
Vertical Section of the Skin of the Thumb, partly diagrammatic : a, stratum corneum, or epiblastic
portion, traversed bv ducts of two glnnds; b, rcte mucosum. with prolongations extending
between papilla beneath: between " and h is seen the stratum luciduni, also tlie basement-mem-
brane c, mesoblastic portion or papillarv layer of corium. Near the centre of the figure is seen
;
a nervous papilla ; d. reticular laver of corium with vascular plexus, nucleated connective tissue,
and interspaces; e, coils of four sweat-glands; /, fat-giobules in the meshes of connective tissue.
(From Hyde's Diseases of the Skin.)
all that portion of the first division above the basement-membrane. Its
under surface is uneven, being marked by depressions and elevations
corresponding to and fitting over the papillse of the true derm. Com-
