Reply To: Week 7 – Discussion Board 1

Welcome To Interpreters Associates, Inc. Forums Week 7 – Discussion Board 1 Reply To: Week 7 – Discussion Board 1

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Miriam Kelly # Posted on October 18, 2022 at 9:53 pm
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The layers of skin can be broken down from bottom to top as the subcutaneous tissue or hypodermis, the dermis, and the epidermis on top.

The subcutaneous tissue at the bottom is characterized by having blood vessels that are bigger, and it also has fat and connective tissue. It helps ensures that the body has the ideal temperature, stores excess energy as fat, and provides protection from outside trauma.

The dermis, in the middle, is much thicker than the other layers, and the book makes it clear that it’s actually two layers. The book also says that it works to enable stretching to occur and to fight age lines and sagging at the same time (19). The dermis has nerve endings, hair follicles, sweat glands, and oil glands. The two parts of the dermis are papillary and reticular. The papillary dermis has minuscule blood vessels called capillaries that assist in regulating skin temperature as well as nourishing the epidermis. Still yet, it has the Meissner’s and the Lamellar corpuscles. The Meissner’s is involved with sensitivity to touch, and the Lamellar has to do with vibration and pressure. The reticular dermis has stacks of collagen. Collagen is responsible for making skin strong and elastic. A lot of people are familiar with the connection between collagen and looking youthful, as there are many beauty products that are marketed with collagen or to have an effect on it. The dermis also has transparent fluid with white blood cells, which of course are the cells that kill viruses and infections and other harmful materials.

The book makes it clear that the epidermis does not have blood vessels and that it also has melanocytes that create melanin. The epidermis contains keratinocytes that produce keratin, which is responsible for making the skin essentially waterproof. The bottommost layer of the epidermis is the only part that gets nutrients from it, so cells that go to the top layer die off.

Other source besides book: