Integumentary system works with the excretory system
answer explanation . The hair follicle is a depression of epidermal cells deep into the dermis. What does the Integumentary system contain and why is/are it/they vital? A. The cells forming a sebaceous gland have extremely short lifespans – barely over a week. The skin not only keeps most harmful substances out, but also prevents the loss of fluids. Soap has 3 times more hydrogen ions than skin B. The next layer of the epidermis is called stratum granulosum and contains keratinocytes with a granular cytoplasm. There is no direct blood supply to the epidermis and therefore, the cells of this stratified squamous tissue obtain nutrients and oxygen through diffusion. 1. Nerve endings in the skin are repsonsible for our sense of touch. The integumentary system is the organ system that consists of the skin and the various accessory structures such as hair, nails, and exocrine glands. Free nerve endings may be sensitive to pain, warmth, or cold. Likewise, the integumentary system is important for vitamin D production and plays a small role in excreting waste. One of the most common viral infections is herpes. The hair shaft consists of the part of the hair that is found outside of the skin. The skin is only a few millimeters thick yet is by far the largest organ in the body. At about 8% of epidermal cells, melanocytes form the second most numerous cell type in the epidermis. The ducts of apocrine sweat glands extend into the follicles of hairs so that the sweat produced by these glands exits the body along the surface of the hair shaft. The keratinocytes of the cuticle are stacked on top of each other like shingles so that the outer tip of each cell points away from the body. All Rights Reserved. Our mission is to provide objective, science-based advice to help you make more informed choices. Keratinocytes begin their life as offspring of the stem cells of the stratum basale. The integumentary system comprises the skin and its appendages acting to protect the body from various kinds of damage, such as loss of water or damages from outside. It also helps provide protection from harmful ultraviolet radiation. In the thick skin of the hands and feet, there is a layer of skin superficial to the stratum granulosum known as the stratum lucidum. ‘Cold sores’ arise from oral herpes, forming blisters around the mouth. Layers of tightly bound, heavily keratinized, anucleated cells provide the first line of defense by forming a physical barrier. What is the MAIN function of the integumentary system? Cerumen is made continuously and slowly pushes older cerumen outward toward the exterior of the ear canal where it falls out of the ear or is manually removed. Under the cuticle are the cells of the cortex that form the majority of the hair’s width. Ceruminous glands are special exocrine glands found only in the dermis of the ear canals. The epidermis is an avascular region of the body, meaning that it does not contain any blood or blood vessels. Sweat from these glands, along with sebum, can encourage bacterial growth, and form the site for infection, odor or rashes. Carotene is another pigment present in the skin that produces a yellow or orange cast to the skin and is most noticeable in people with low levels of melanin. Ceruminous glands produce a waxy secretion known as cerumen to protect the ear canals and lubricate the eardrum. It has a variety of additional functions; it may serve to waterproof, and protect the deeper tissues, excrete wastes, and regulate body temperature, … The ability to order a vitamin D home test and check our own levels thankfully makes it simpler to identify deficiency. Sudoriferous glands are exocrine glands found in the dermis of the skin and commonly known as sweat glands. The cuticle is the outermost layer made of keratinocytes. If the pH of a person’s skin is 5.0 and their soap has a pH of 8.0, what is the difference in proportion of hydrogen ions between skin and soap? Fungal infections include athletes foot, yeast infections and ringworm infections. Around the proximal and lateral edges of the nail is the eponychium, a layer of epithelium that overlaps and covers the edge of the nail body. Melanin is a brown or black pigment produced by melanocytes to protect the skin from UV radiation. The dermis is mostly made of dense irregular connective tissue along with nervous tissue, blood, and blood vessels. There was an error submitting your subscription. Skin is the organ that covers the outer part of the human body. , with a granular cytoplasm pili muscles people with little melanin are mononuclear dendritic cells that are simply neurons their! Leading to increased perspiration as more blood to enter the body most harmful substances out, but two. 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