Skin 

The picture " " can link to it's
corresponding histological photograph. 

The picture " " can link to it's
corresponding histological drawing.




@

@

Skin of palm and sole 


A-1-c, Skin of sole, Monkey, OsO4
A-5-a
NA-1-i, Caucasian and Negro, HE; 
NF-1-c, cs, HE

   Epidermis


Stratum corneum

»»  dead scale-like cells without nuclei

Stratum lucidum

»»  flattened cells
»»  nuclei begin to degenerate

Stratum granulosum

»»  rhombic cells containing keratohyalin
»»  granules

Stratum Spinosum

»»  polyhedral prickle cells with numerous
»»  spinous processes

Stratum basale

»»  high columnar (cuboidal) cells 
     resting on a basement membrane

Ducts of sweat glands

Sweat pores

   Dermis 

( Irregularly dense connective tissue )

Papillary layer: 
contain dermal papillae

»»  Vascular papillae - blood vessels
»»  Nervous papillae - Meissner's corpuscles
»»  Ducts of sweat glands

Reticular layer

»»  Bundles of collagenos fibers, fibroblasts
»»  Blood vessels, nerves
»»  Ducts of sweat glands

Hair follicle and sebaceous glands, arrector pili muscles

   Hypodermis

 ( the superficial fascia ): loose C.T.

»»  Fat cells ( Panniculus adiposus )
»»  Pacinian corpuscles ( NF-1-c )

»»  Secretory portion of sweat glands
»»  Sweat ducts

   Skin pigmentation


»»  melanin in basal epithelial was compared in NA-1-i
      melanocytes are difficult to identify

**please go back to check NN-18-e recto-anal canal  
  and NN-18-c
anus.

Scalp


( M-1-o , HE )

   Epidermis


»»  Stratum corneum
»»  Stratum spinosum
»»  Stratum basale
»»  Hair follicles

@

   Dermis


»»  Hair follicles
»»  Connective tissue sheath
»»  Epithelial root sheath
»»  Cuticle
»»  Arrector pili muscle
     smooth muscle fiber bundle
»»  Sebaceous glands
     Sebaceous cells
     Indifferent cells
     Ducts connected to lumen of hair follicles

@

@

Finger nail


NC-2-a, human, ls.


»»  Nail
»»  Nail bed
»»  Eponychium
»»  Hyponychium
@