breakfast check clothes check sunscreen oh oh oh my god i forgot to bring the sunscreen i need to go back and bring it or else my smooth shiny teal skin will get burnt due to uv rays oh hello friends as you can see i'm going to bring a bottle of sunscreen until the time i reach home let me take you under the surface of the skin zoom in or should i say zoom under well friends we all have skin and it serves multiple purposes like it is an essential barrier or a first line of protection against the outside environment it is a crucial part of one of our five senses it absorbs sunlight for vitamin d and heat and controls our internal temperature and permits the sensations of touch heat and cold but how does it work well your skin is made up of three layers the epidermis dermis and hypodermis let's start with the first layer known as epidermis the epidermis is the outer layer of skin and is made up mainly of skin cells the cells on the very outer layer of the epidermis are constantly dying and getting replaced by new cells every four weeks as the new cells are formed the older ones are pushed up once they reach the surface area they provide a waterproof barrier from the invading microbes and other external forces the epidermis also contains melanin that sets the tone of your skin more the melanin the darker the skin melanin also helps to protect from harmful sun rays but it has its limits and that's why we need some sunscreen now let's go to the second layer known as the dermis the dermis contains tough connective tissue hair follicles sweat glands and nerve endings through which the skin sends the messages to the brain about all the things you touch then the brain and the nervous system decides how to respond towards it for example if you touch something too hot your nervous system will tell your brain to move away from it the dermis also contains the sweat glands where the sweat is generated and poured out all the way through the epidermis where the sweat comes out of the holes called pores that helps to regulate your body's temperature and the last part of your skin layer is called the hypodermis also known as subcutaneous tissue and is made up of fat and connective tissue the hypodermis primary function is to store fat the body needs some level of fat to cushion and protect your bones and organs also it helps us to keep our body nice and warm trim your time did you know that your skin is the largest organ in your body it occupies nearly 1.73 square meters or more than 18.5 square feet to cover our flesh and bones and makes up about 16 percent of our body weight it's question time so friends today's question is what is the first layer of the skin cold do write your answer in the comment section below and hit the like button to be a part of the peekaboo family hope you enjoyed today's episode until next time it's me dr my knox zooming out oh goodness me hmm never mind hey kids you liked my videos didn't you before you go don't forget to click on the subscribe button and the bell so you won't miss out on my latest videos see you you