Skin

Thick skin, Monkey

Identify the epidermis which consists of keratinising stratified squamous epithelium. Identify the various layers of the epidermis starting with the deepest layer(stratum basale or germinativum). Can you identify the stratum spinosum which consists of polyhedral cells with large pale nuclei? Still higher is the stratum granulosum consisting of a layer of cells containing dark purple keratohyalin granules. Is there stratum lucidum - an eosinophilic structureless area in your slide? The most superficial layer is a thick structureless stratum corneum. In the dermis or hypodermis, look for sweat glands. Can you identify Pacinian corpuscles? Below the dermis, locate adipocytes(fat cells), blood vessels and nerve bundles. Also identify the Meissner's corpuscles in the dermal papillae.