stratum germinativum

(noun)

The basal layer—sometimes referred to as stratum basale—is the deepest of the five layers of the epidermis.

Related Terms

Examples of stratum germinativum 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. 
    • This is because it contains the only cells of the epidermis that can divide via the process of mitosis, which means that skin cells germinate here, hence the word germinativum.
    • From the stratum basale, the keratinocytes move into the stratum spinosum, a layer so called because its cells are spiny-shaped cells. 
    • Once the keratinocytes leave the stratum granulosum, they die and help form the stratum lucidum.

  • 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. 

  • What is Skin?

  • 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.

  • Lab 1: Normal Distribution (Lap Times)

    • Use a Stratified Sampling Method by Lap (Races 1 – 20) and a random number generator to pick 6 lap times from each stratum.