The stratum basale (also called the stratum germinativum) is the deepest epidermal layer and attaches the epidermis to the basal lamina, below which lie the layers of the dermis. A. This is a quiz called photomicrograph of thin skin and was created by member nhammond21 login. dermal papilla. These cells are especially abundant on the surfaces of the hands and feet. The desmosomes interlock with each other and strengthen the bond between the cells. Elastin fibers provide some elasticity to the skin, enabling movement. Click to share on Twitter (Opens in new window), Click to share on Facebook (Opens in new window), Click to share on Tumblr (Opens in new window), Click to share on Reddit (Opens in new window), Click to share on Pinterest (Opens in new window), Click to email this to a friend (Opens in new window). For this reason, if you cut the epidermis there is no bleeding, but if the cut penetrates to the dermis there is bleeding. These two proteins make up the bulk of the keratinocyte mass in the stratum granulosum and give the layer its grainy appearance. Check all that apply. 3. Slide 9 detail of thin skin epithelium. The stratum basale is primarily made up of basal keratinocyte cells, which can be considered the stem cells of the epidermis. Name of layers Type of tissue Epidermis Areolar and adipose tissue Stratified squamous epithelium Subcutaneous layer Dense connective tissue Dermis Reset Zoom The top layer of the epidermis is made of: answer choices . This is an online quiz called Layers of The Epidermis. Sorry, your blog cannot share posts by email. Cells in the epidermis influence the dermis, which in turn influence the turnover of cells in the epidermis (via activities of cells such as mast cells, which secrete cytokines). 42. ... C. stratum basale (this multiple choice question has been scrambled) Which layer of the dermis is directly below the epidermis? These cells are densely packed with eleiden, a clear protein rich in lipids, derived from keratohyalin, which gives these cells their transparent (i.e., lucid) appearance and provides a barrier to water. This Anatomy quiz on the skin structure of the integumentary system is developed to test your knowledge on the layers, appendages, and nerve endings in the skin. It’s the only layer that is visible to the eyes. The epidermis is the most superficial layer of the skin that covers almost the entire body surface. Within the papillary layer are fibroblasts, a small number of fat cells (adipocytes), and an abundance of capillary loops. This dry, dead layer helps prevent the penetration of microbes and the dehydration of underlying tissues, and provides a mechanical protection against abrasion for the more delicate, underlying layers. The epidermis is composed of keratinized, stratified squamous epithelium. Skin that has four layers of cells is referred to as “thin skin.” From deep to superficial, these layers are the stratum basale, stratum spinosum, stratum granulosum, and stratum corneum. The protein found in large amounts in the outermost layer … This layer is well vascularized and has a rich sensory and sympathetic nerve supply. B. Sebaceous gland. As new cells are formed, the existing cells are pushed superficially away from the stratum basale. 1. In biological terms, your skin is the single biggest organ in your body, and like every other organ (e.g., heart, liver, lungs, etc), skin is composed of many types of tissues, all doing different jobs. There is a printable worksheet available for download here so you can take the quiz with pen and paper.. The stratum granulosum has a grainy appearance due to further changes to the keratinocytes as they are pushed from the stratum spinosum. This site uses Akismet to reduce spam. •Hair Follicles are tubes of epidermis that a hair grows out of. The structure indicated by label E is part of which of the following? 42. Which of the following layers of the epidermis is NOT found in thin skin? The sunburn and tan you may have acquired involved sunlight, certain layers of your skin, and the cells within those layers. Collagen injections and Retin-A creams help restore skin turgor by either introducing collagen externally or stimulating blood flow and repair of the dermis, respectively. The epidermis layer provides a barrier to infection from environmental pathogens  and regulates the amount of water released from the body into the atmosphere through transepidermal water loss . The stratum spinosum is composed of eight to 10 layers of keratinocytes, formed as a result of cell division in the stratum basale. The body mass index (BMI) is often used as a measure of fat, although this measure is, in fact, derived from a mathematical formula that compares body weight (mass) to height. The Epidermis is the deepest layer and made mostly of connective tissue . Structurally, the epidermis is only about a tenth of a millimeter thick but is made of 40 to … This quiz has tags. Strands of hair originate in an epidermal penetration of the dermis called the hair follicle.The hair shaft is the part of the hair not anchored to the follicle, and much of this is exposed at the skin’s surface. Underlying the papillary layer is the much thicker reticular layer. stratum lucidum (only on palms and soles) stratum corneu… It’s easy to take your skin for granted, but when you consider how it protects your body from harm, it is something we should appreciate more. The epidermis is one layer thick, but may have more layers to prevent transpiration. Basal cells become new keratinocytes, which replace the older ones that die and are shed.  Which layer of the skin contains lots of adipose tissue and blood vessels? These tissues are then made up of various cells. The nuclei and other cell organelles disintegrate as the cells die, leaving behind the keratin, keratohyalin, and cell membranes that will form the stratum lucidum, the stratum corneum, and the accessory structures of hair and nails. C) Construction of scar tissue is easier than making normal skin. stratum granulosum. The epidermis regenerates in orderly fashion by cell division of keratinocytes in the basal layer, with maturing daughter cells becoming increasingly keratinised as they move to the skin surface. Epidermis The epidermis is a dynamic structure acting as a semi-permeable barrier with a layer of flat anuclear cells at the surface (stratum corneum). Hypodermis, which is the topmost layer of the hair follicle the same subject growing out of the main. 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