How many cell layers compose the lower epidermis?
There are 5 layers in the epidermis and I think you are talking
about the dermis (dermal) which is 2 layers thick.
The epidermis is composed of the 5 layers as
1- stratum germinativum,
5- stratum corneum.
Cell division occurs in the stratum basale of the epidermis. The epidermis is made up of 5 layers. From outer to inner these layers are: stratum corneum, stratum licidum, stratum granulosum, stratum spinosum, and stratum basale. The basale is the innermost layer of the epidermis and is where cell division occurs.
the function of epidermis: in the lower part there is the sign,cellula,membrua, sinkline, and midrib in the upper part of epidermis there is also the sign cell, cellule, membrua, and sinotopilensicuaye and in wax layer is the botany crispifiedencius "crispifiedencius" is a kind of cell which leaves layer the insects into it. and the last layer is synocimprotocium membulare crisd.
The epidermis forms from key specialised stem cells found deeper under the outer layer. These stem cells are found in or on top of the dermis and grow into the epidermis. These cells in grow in layers and as the layers age, the cells undergo a process called 'keratinisation' almost completely changing into the protein keratin. The last part of the cell that is converted is the nucleus.
the skin has 3 different layers the epidermis the dermis and the hypodermis The epidermis has 5 different layers. # The cornified layer (stratum corneum) # The clear layer (stratum lucidum) # The granular layer (stratum granulosum) # the prickle cell layer (stratum spinosum) # the basal layer (stratum basale)
The lower epidermis of a leaf serves as protection like skin, and also helps retain moisture. 1/11/12: I'm studying this subject now and I believe from what I learned that the UPPER epidermis reduces water loss and protects the cell with the cuticle (a thin waxy later that protects the leaf from fungi and bacteria). The LOWER epidermis, however, contains little pores called Stomata that allow gas exchange. Going into detail of what the Stomata…
Stratified squamous has multiple layers of cells, the outermost layer of which contains squamous cells. There are two varieties: nonkeratinized (e.g., lining of vagina) and keratinized, in which the superficial cell layers have been transformed into a hard layer of nonliving keratin (e.g., epidermis of skin).
A leaf normally consists of the following parts: the epidermis, the mesophyll, and the veins. The epidermis cover the upper and lower surfaces (the outside) of the leaf. It contains many types of cell tissues that protect against water loss, regulates the exchange of gases, secretes metabolic compounds and in some leaves controls the absorption of water. The mesophyll, or middle leaf, is where photosynthesis usually occurs. It is often made up of two layers…
What structures were you able to observe in onion skin cells that are not found in human check cells?
When looked at under a light microscope, features that are observable in onion skin cells (onion epidermis) but not a human cheek cell (cheek epidermis) are the following: cell wall- this surrounds the cell membrane and gives the cells their rectangular appearance vacuole - these are present roughly in the middle of the onion epidermis cell