Dictionary > Basal layer

Basal layer

Definition
noun
(1) The innermost layer of the epidermis made up of basal or germinative cells capable of proliferating by mitosis to give rise to new cells for other epidermal layers.
(2) The layer of endometrium that is less responsive to hormonal stimuli and does not desquamate, but preserved. It gives rise to the new functional layer shed during a menstrual period.
Supplement
In the skin, the cells of basal layer are actively dividing to replenish lost skin cells from normal shedding. This layer has many melanocytes, or melanin-producing cells that account for the pigmentation of skin and hair.
In the endometrium, the basal layer is a layer of cells that is located underneath the functional layer. Unlike the functional layer, the basal layer is not shed during menstruation.
Synonym: stratum basale.


You will also like...

Mātauranga Māori and Science Collaboration
Mātauranga Māori and Science

Mātauranga Māori is the living knowledge system of the indigenous people of New Zealand, including the relationships t..

An artistic depiction of a human embryo
Growth and Development of a Human Baby

Upon fertilization, a zygote forms and develops into an embryo. This tutorial elaborates on the growth and development f..

Plant meristem
Plant Meristems and Growth

In plants, growth occurs in meristems, which are the site of repeated cell division of unspecialized cells. These cells ..

Biosecurity and Biocontrol
Biosecurity and Biocontrol

This lesson explores the impact of biosecurity threats, and why they need to be identified and managed. Examples to incl..

Principles of Hormonal Control Systems
Principles of Hormonal Control Systems

Hormones are essential in the regulation of the activity of the various biological systems of the human body. The ineffi..

Genetic engineering
Genetic Engineering Advantages & Disadvantages

This tutorial presents the benefits and the possible adverse eventualities of genetic engineering. Know more about this ..