Download file to see previous pages...
This layer is located above the basal layer (James et al., 2005). It is characterised by ‘pushed up’ basal layers that squamous cells, or keratinocytes which produce keratin, a tough protective protein (Marks & Jeffery, 2006). The layer also contains Langhern cells which attach themselves to antigens invading damaged skin (Proksch, Brandner, &Jensen, 2008).
These are two characteristic layers that are located above the Squamous layer. They are made up of bigger and flatter keratinocytes that contain keratohylain granules used to bind keratin filaments together (Marks et al., 2006).
This is the outermost layer of the dermis comprising 10-30 thin layers of continually shedding and dead keratinocytes (Ovaere, Lippens, Vandenabeele, Declercq, 2009). Its cells are clamped and tightened together to form a ‘horny’ like lay
In conclusion, the human skin maintains a natural look through the continuous renewal of the epidermal cells. Through its various layers and cells, the epidermis also serves as an important component within the skin structure that helps in protecting the body against oxidant stress, ultraviolet rays, chemical compounds and microbial pathogens.
Ovaere P, Lippens S, Vandenabeele P, Declercq W. (2009). "The emerging roles of serine protease cascades in the epidermis". Trends in Biochemical Sciences 34 (9):
...Download file to see next pagesRead More
Moreover, benefits of non-pathogenic microorganisms in human environment are discussed further on. Variola virus and Staphylococcus epidermis: comparing and contrasting Variola virus infects human beings. It can be transmitted to other humans via face-to-face contact or contact with other objects, or through the air.
As such, system includes mucous membranes, nails, skin and hair, among other parts. Accordingly, many hygiene practices are based on restoring and maintaining the healthy integumentary system. Sometimes the teeth, which form the part of oral cavity, with its mucous membrane, are also taken as part of the system, being the accessory structure, within the collective structures of the integumentary system.
The only organ system not repeated is the digestive system.
During development of the embryo, a spiral holoblastic cleavage pattern is seen. In the first round of cleavage 4 blastomeres are produced called A, B, C, and D. During the second round of cleavage unequal division takes place which produces two types of blastomeres, the larger ones are called macromeres while the smaller ones are called micromeres.
The dermatologist safely removes the superficial epidermis through shaving it off with a rotary instrument to allow for epidermis regeneration. There are two layers of the skin, the dermal and epidermal, with epidermal layer "differentiated into five layers: horny layer (stratum corneum), clear layer (stratum lucidum), granular layer (stratum granulosum), prickle-cell layer (stratum spinosum) and the basal layer (stratum basale)" (Wang, C.R.
The upper epidermis can be differentiated from the lower epidermis by the number of stomata which are more in the latter. The epidermis protects the leaf against excessive water loss and mechanical injury.
Keratin, a fibrous protein also found in the skin, is highly concentrated to form the fingernails (Farabee, 2001a, Hair and Nails section). The hair shaft, pushed out by the hair follicle, is likewise made almost entirely of protein, a tissue constituting much of the skin.
The main function of LCs is to process antigens and present it to T cells to build immune responses. In the process, Langerhans cells combines with several other cells and it has been found that Langerhans
Chemically, the skin is made up by 70 per cent of water, 25 per cent of protein, and 2 per cent is lipids. The rest is trace minerals, glycosoaminoglycans, nucleic acids, proteoglycans, and other chemical elements. The
nformation to the spinal cord or brain, a motor neuron which is a cellular body with the ability to perform any motor output and lastly the effectors which can be a gland or muscle that acts in response to information sent from the brain or spinal cord (Moses et al.,
The practical was done successfully and the observations were noted. Microbial growth varied depending on the concentrations of the solutions immersed in. Increase in cell number is the meaning of microbial growth (Excerpta medica foundation, 2007).
1 Pages(250 words)Essay
GOT A TRICKY QUESTION? RECEIVE AN ANSWER FROM STUDENTS LIKE YOU!
Let us find you another Essay on topic Epidermis for FREE!