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What is the function of keratin in the epidermis?
The epidermis is the outer layer of the skin made of epithelial tissue. In the epidermis there are keratin-secreting cells (keratinocytes). Keratin is an insoluble protein that impregnates the surface of the skin providing protection and impermeability. In mammals keratin also forms the hairs.
The keratinized cells of the skin surface make the corneal layer. These cells die and are continuously changed by others.
Do all mammals have a placenta? Mammals of the monotreme group (echidnas, platypus,) are oviparous, egg-laying, and they do not have a placenta. Mammals of the marsupial group
1. Considering the nature of negative-feedback control and the function of the respiratory system, what effect do you predict that a decrease in CO2 in the internal environment wou
Epidemiological Theory - Accident Causation Epidemiological theory of accident causation considers industrial hygiene that concerns environmental issues and may result in sick
Explain Mental changes - clinical signs of kwashiorkor? You would find a kwashiorkor child to be unusually apathetic with absolutely no interest in the surroundings. The child
Which of the following defines why the vast majority of segregation errors in human patients include the two sex chromosomes (XXY, XO, XYY) or chromosome 21 (triple 21)? A. Th
Conjugation – Protozoan Conjugation is characteristic of ciliates. The details vary from species to species. The general features can be observed in Paramecium sps. which has
What is Surviving Implants It is a term described by Albrektsson that applies to implants that are still in function but have not been tested against success criteria. Such as
What is karyotype? Name the karyotype is given to the set of chromosomes of an individual, generally when visualized and identified under the microscope. The visualization in g
What would happen to a cell if it was placed into a hypertonic solution? Into a hypotonic solution? What would happen to a cell if the cell itself was hypertonic to the solution?
Mitochondria, which fuel life's processes in all cells, uses nutrients from digested food and oxygen which has diffused across cell surface. In freshwater protozoans water expulsio
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