https://padlet.com/0720192/i9g1d5rs1zh3sheu en-us 2020-10-05 14:32:03 UTC 2025-05-06 09:52:49 UTC hello@padlet.com https://padlet.net/icons/png/1f52c.png 0720192 https://padlet.com/0720192/i9g1d5rs1zh3sheu/wish/810258283 The integumentary system covers the surface of the embryo (skin) and it's specialized skin structures including hair, nails, sweat glands, mammary glands, and teeth. Ectoderm forms the surface epidermis and the associated glands. Mesoderm, from the somites, forms the underlying connective tissue of dermis and hypodermis.]]> 2020-10-07 13:47:56 UTC https://padlet.com/0720192/i9g1d5rs1zh3sheu/wish/810258283 0720192 https://padlet.com/0720192/i9g1d5rs1zh3sheu/wish/820400049 The skin is the body's largest waste removal system. Toxins are released through the sweat glands and pores.]]> 2020-10-12 02:16:18 UTC https://padlet.com/0720192/i9g1d5rs1zh3sheu/wish/820400049 0720192 https://padlet.com/0720192/i9g1d5rs1zh3sheu/wish/820489071 The skin functions as our first line of defense against toxins, radiation, and harmful pollutants. Skin contains cells that provide immune functions to protect against infections. Our skin has the ability to identify and destroy foreign substances that may potentially be harmful to the body.]]> 2020-10-12 03:13:06 UTC https://padlet.com/0720192/i9g1d5rs1zh3sheu/wish/820489071 0720192 https://padlet.com/0720192/i9g1d5rs1zh3sheu/wish/820490566  Thousands of pores on the surface of the skin can absorb vitamins, acids, water, and oxygen in order to provide moisture and nourishment to our skin.]]> 2020-10-12 03:14:04 UTC https://padlet.com/0720192/i9g1d5rs1zh3sheu/wish/820490566 0720192 https://padlet.com/0720192/i9g1d5rs1zh3sheu/wish/820500301 The skin secretes sebum, a mixture of oils that keeps the skin soft and supple. The layer of sebum on the outermost layer of the skin is known as the acid mantle. When intact the acid mantle has a PH that ranges from 4.5-5.5. The acid mantle is acidic in nature to protect the skin from outside invasion.]]> 2020-10-12 03:20:35 UTC https://padlet.com/0720192/i9g1d5rs1zh3sheu/wish/820500301 0720192 https://padlet.com/0720192/i9g1d5rs1zh3sheu/wish/820555285 The skin contains millions of nerve endings that transport stimuli. These nerve ending allow humans to detect sensation such as heat, cold, pain, and pressure.]]> 2020-10-12 03:59:02 UTC https://padlet.com/0720192/i9g1d5rs1zh3sheu/wish/820555285 0720192 https://padlet.com/0720192/i9g1d5rs1zh3sheu/wish/821720124 2020-10-12 14:18:45 UTC https://padlet.com/0720192/i9g1d5rs1zh3sheu/wish/821720124 0720192 https://padlet.com/0720192/i9g1d5rs1zh3sheu/wish/821733437 2020-10-12 14:22:50 UTC https://padlet.com/0720192/i9g1d5rs1zh3sheu/wish/821733437 0720192 https://padlet.com/0720192/i9g1d5rs1zh3sheu/wish/821741521 2020-10-12 14:25:11 UTC https://padlet.com/0720192/i9g1d5rs1zh3sheu/wish/821741521 0720192 https://padlet.com/0720192/i9g1d5rs1zh3sheu/wish/821747672 Nerve receptors in the dermis layers detect sensations such as heat, cold, pain, pressure, and touch, allowing the body to be aware of these stimuli.]]> 2020-10-12 14:27:05 UTC https://padlet.com/0720192/i9g1d5rs1zh3sheu/wish/821747672 0720192 https://padlet.com/0720192/i9g1d5rs1zh3sheu/wish/821767287 2020-10-12 14:33:21 UTC https://padlet.com/0720192/i9g1d5rs1zh3sheu/wish/821767287 0720192 https://padlet.com/0720192/i9g1d5rs1zh3sheu/wish/821804168 The topmost layer, the stratum corneum, consists of dead cells that shed periodically and is progressively replaced by cells formed from the basal layer. The stratum basale also contains melanocytes, cells that produce melanin, the pigment primarily responsible for giving skin its color.]]> 2020-10-12 14:44:57 UTC https://padlet.com/0720192/i9g1d5rs1zh3sheu/wish/821804168 0720192 https://padlet.com/0720192/i9g1d5rs1zh3sheu/wish/821808809 2020-10-12 14:46:27 UTC https://padlet.com/0720192/i9g1d5rs1zh3sheu/wish/821808809 0720192 https://padlet.com/0720192/i9g1d5rs1zh3sheu/wish/821812311 The cells of the stratum granulosum accumulate dense basophilic keratohyalin granules. These granules contain lipids, which along with the desmosomal connections, help to form a waterproof barrier that functions to prevent fluid loss from the body.]]> 2020-10-12 14:47:31 UTC https://padlet.com/0720192/i9g1d5rs1zh3sheu/wish/821812311 0720192 https://padlet.com/0720192/i9g1d5rs1zh3sheu/wish/825160346 2020-10-13 14:56:04 UTC https://padlet.com/0720192/i9g1d5rs1zh3sheu/wish/825160346 0720192 https://padlet.com/0720192/i9g1d5rs1zh3sheu/wish/829869588 2020-10-14 18:37:13 UTC https://padlet.com/0720192/i9g1d5rs1zh3sheu/wish/829869588 0720192 https://padlet.com/0720192/i9g1d5rs1zh3sheu/wish/829874610 The two primary functions of the stratum basale are 1) proliferation and 2) attachment of the epidermis to the dermis. Cells of the stratum basale essentially represent germinal cells (“brick generators”) responsible for the generation of all cells of the epidermis.]]> 2020-10-14 18:38:33 UTC https://padlet.com/0720192/i9g1d5rs1zh3sheu/wish/829874610 0720192 https://padlet.com/0720192/i9g1d5rs1zh3sheu/wish/829888591 A keratinocyte is a cell that manufactures and stores the protein keratin. Keratin is an intracellular fibrous protein that gives hair, nails, and skin their hardness and water-resistant properties.]]> 2020-10-14 18:42:27 UTC https://padlet.com/0720192/i9g1d5rs1zh3sheu/wish/829888591 0720192 https://padlet.com/0720192/i9g1d5rs1zh3sheu/wish/829893946 Langerhans cells are dendritic but unpigmented and are found nearer the skin surface than melanocytes. Epidermis contains another system of dendritic cells, which do not manufacture pigment. Their distribution extends farther toward the skin surface than that of the pigment cells.]]> 2020-10-14 18:43:54 UTC https://padlet.com/0720192/i9g1d5rs1zh3sheu/wish/829893946 0720192 https://padlet.com/0720192/i9g1d5rs1zh3sheu/wish/829900380 In the human skin, melanocytes are present in the epidemis and hair follicles. The basic features of these cells are the ability to melanin production and the origin from neural crest cells.]]> 2020-10-14 18:45:38 UTC https://padlet.com/0720192/i9g1d5rs1zh3sheu/wish/829900380 0720192 https://padlet.com/0720192/i9g1d5rs1zh3sheu/wish/829903042 Merkel cells are specialized cells in the skin that are important for proper neural encoding of light touch stimuli. Conflicting evidence suggests that these cells are lineally descended from either the skin or the neural crest.]]> 2020-10-14 18:46:22 UTC https://padlet.com/0720192/i9g1d5rs1zh3sheu/wish/829903042 0720192 https://padlet.com/0720192/i9g1d5rs1zh3sheu/wish/829914769 2020-10-14 18:49:35 UTC https://padlet.com/0720192/i9g1d5rs1zh3sheu/wish/829914769 0720192 https://padlet.com/0720192/i9g1d5rs1zh3sheu/wish/829915915 2020-10-14 18:49:54 UTC https://padlet.com/0720192/i9g1d5rs1zh3sheu/wish/829915915 0720192 https://padlet.com/0720192/i9g1d5rs1zh3sheu/wish/829924516 2020-10-14 18:52:27 UTC https://padlet.com/0720192/i9g1d5rs1zh3sheu/wish/829924516