stratum corneum

(noun)

The most superficial layer of the epidermis from which dead skin sheds.

Related Terms

Examples of stratum corneum in the following topics:

  • Structure of the Skin: Epidermis

    • The epidermis includes five main layers: the stratum corneum, stratum lucidium, stratum granulosum, stratum spinosum, and stratum germinativum.
    • The stratum basale, also called the stratum germinativum, is the basal (base) layer of the epidermis. 
    • Once the keratinocytes leave the stratum granulosum, they die and help form the stratum lucidum.
    • From the stratum lucidum, the keratinocytes enter the next layer, called the stratum corneum (the horny layer filled with cornified cells). 
    • The cells of the stratum corneum are also surrounded by lipids (fats) that help repel water as well. 

  • What is Skin?

  • Skin Color

    • The deepest of the epidermal layers is called the stratum basale or stratum germinativum. 
    • The amount of carotene found in the stratum corneum of the epidermis and the deepest layer of the skin, the hypodermis. 

  • Control of Nosocomial Infections

    • The second group is represented by the permanent micro-organisms living on the skin surface, on the stratum corneum or immediately under it.

  • Lab 2: Sampling Experiment

    • Use 25% of the restaurants from each stratum.
    • Use 25% of the restaurants from each stratum.

  • Three sampling methods (special topic)

    • Stratified sampling is especially useful when the cases in each stratum are very similar with respect to the outcome of interest.
    • Why would it be good for cases within each stratum to be very similar?
    • We might get a more stable estimate for the sub-population in a stratum if the cases are very similar.
    • Strati ed sampling requires observations be sampled from every stratum.
    • In the middle panel, stratified sampling was used: cases were grouped into strata, and then simple random sampling was employed within each stratum.

  • Metabolic Functions

    • Vitamin D is produced in the two innermost strata of the epidermis, the stratum basale and stratum spinosum.

  • Blood Supply to the Epidermis

    • The blood vessels in the dermis provide nourishment and remove waste from its own cells and from the stratum basale of the epidermis.

  • Optional Collaborative Classrom Exercise

    • Create a cluster sample by considering each state as a stratum (group).

  • Amnion Development

    • This cavity is roofed in by a single stratum of flattened, ectodermal cells called the amniotic ectoderm.