The integumentary system consists of the skin, hair, nails, glands, and nerves. Its main function is to act as a barrier to protect the body from the outside world. It also functions to retain body fluids, protect against disease, eliminate waste products, and regulate body temperature.Dec 1, 2021
5:089:39The Integumentary System, Part 1 - Skin Deep: Crash Course A&P #6YouTubeStart of suggested clipEnd of suggested clipBecause those cells are getting compressed. And flattened as they move up through the epidermalMoreBecause those cells are getting compressed. And flattened as they move up through the epidermal layers maturing as they go the deeper you go through the layers of the epidermis.
The primary function of the integumentary system is to protect the inside of the body from elements in the environment—like bacteria, pollution, and UV rays from the sun. The skin and its associated structures also retain bodily fluids, eliminate waste products, and regulate the body's temperature.Nov 15, 2021
Melanin has two forms, producing pigments that range in color from reddish yellow to brownish black. Because its main job is to protect us from the sun's ultraviolet rays, it makes sense that, in the distant past, the distribution of these different skin tones was not at all random.Feb 16, 2015
The skin and its derivatives (hair, nails, sweat and oil glands) make up the integumentary system. One of the main functions of the skin is protection. It protects the body from external factors such as bacteria, chemicals, and temperature.May 3, 2021
The integumentary system includes the epidermis, dermis, hypodermis, associated glands, hair, and nails.May 9, 2021
Functions of the skinProvides a protective barrier against mechanical, thermal and physical injury and hazardous substances.Prevents loss of moisture.Reduces harmful effects of UV radiation.Acts as a sensory organ (touch, detects temperature).Helps regulate temperature.An immune organ to detect infections etc.More items...•May 5, 2021
The skin has three main functions:Protection;Thermoregulation;Sensation.Nov 25, 2019
Layers of Skin (1:31) Like an everlasting gobstopper, the key to your integumentary system is layers. And although you can't tell by looking at it, your skin actually has three of them, each with particular types of cells that have their own skin jobs, to borrow a phrase from Blade Runner or BSG… whichever you like!Feb 9, 2015
Theory held that darker skin had evolved in order to afford early humans—who had recently lost the cover of fur—a protection against skin cancer under the tropical sun.
People have different skin colors mainly because their melanocytes produce different amount and kinds of melanin. The genetic mechanism behind human skin color is mainly regulated by the enzyme tyrosinase, which creates the color of the skin, eyes, and hair shades.
A study on the genomes of Anatolian Neolithic farmers in West Eurasia (6500–300 BC), who are probably the source population of the first European farmers, suggests that the light skin color has been evolved since at least 6500–4000 years ago [98].Jun 15, 2017
About 5 percent of your entire blood volume is retained in your skin at any given time. your nervous system constricts your dermal blood vessels to squeeze that extra blood into circulation. to perform a key function: regulating your body temperature. effort to keep you at a comfortable temperature.
it truly becomes activated D, also called calcitriol, which is circulated to all the bones of your body. 05:39. But let’s not just be skin-deep here — your integumentary system also involves your so-called. 05:43. skin appendages — your hair, nails, sweat and sebaceous, or oil glands, which can each.
Reddened skin, or erythema, could indicate a fever, inflammation, or allergy — all of. 04:25. these conditions cause blood vessels to expand and more blood to flow to the skin’s surface. 04:29. Of course, human skin color spans a pretty wide spectrum, so some of these conditions.
03:27. Now, if the temperature gets chilly, the surface of your skin can lose a lot of heat, because. 03:30. it has so much warm blood behind it. To regulate that heat loss, your dermal blood vessels. 03:35. constrict, causing your blood to head deeper into your tissues and help keep your vital organs warm.
nails and tattoo needles, you’ll probably remember that the first and most vital purpose. 01:27. of your integumentary system is to act as a protective barrier. 01:30. Your skin, hair, nails and sweat and oil glands all work together to shield you from all the. 01:34.
But in the parts of the nephron that reabsorb water, like the descending limb of the loop of Henle, water has to move easily through cells, from the filtrate to the blood.
Once the urine leaves the kidneys, it enters the ureters, a pair of slender tubes that drop down to the posterior urinary bladder. Contrary to what you might think, your ureters aren’t just passive tubes, and your pee doesn’t wind up in your bladder because of gravity alone.
That’s because your endocrine system has a lot to say about your bathroom breaks, so you have some strong hormonal mechanisms that affect when and how often you go.
All mammals, and most animals urinate to remove toxins and to help maintain water-volume homeostasis, or blood pressure. And while some of us spray it around to attract mates or mark territory, or deter predators, as far as I know, only humans actually study pee. In fact, we’ve been doing it for thousands of years.
So, yeah, lots of factors affect the production of urine. But once it’s produced, it doesn’t just leave the building.