are not blood vessels in this layer. On the epidermis are epidermal ridges that allow it to lock with the dermis. The cells within the epidermis are keratinocytes that produce keratin and are the most numerous; melanocytes that are in the deepest layer of epidermis and produce melanin; tactile cells that are associated with tactile sensation and connect to nerve endings in the deepest layer of the epidermis; and epidermal dendritic cells that ingest bacteria and foreign debris and epidermal cancer cells. The layers of the epidermis are the stratum basal which is the deepest layer of the epidermis and is a single layer of columnar/cuboidal keratinocytes resting on basement membrane; the stratum spinosum which contains epidermal dendritic cells and is below the above the stratum basal; stratum granulosum is above the stratum spinosum and contains keratinocytes which undergo keratinization here; stratum lucidum is above the stratum granulosum and is mostly seen in thick skin and contains flattened, anucleate keratinocytes; and the stratum corneum is the layer above the stratum lucidum made up of 20-30 layers of anucleate keratinocytes and is constantly shedded.…
1. The three major layers that make up healthy skin are the epidermis, dermis, and the hypodermis. The epidermis is a keratinized stratified squamous epithelium that resists abrasion and reduces water loss. It have four cell types and five layers. The dermis made of strong, flexible dense irregular connective tissue. It contains the blood vessels, nerve fibers and lymphatic vessels. The sweat glands and the hair follicles live in the dermis layer. The hypodermis is deep to the skin. It is made…
Integumentary System: Anatomy and Physiology of the Skin The skin covers the entire body surface, making up most of a humans body weight. Skin tissue provides the human body with protection from mechanical, chemical, thermal damage, and bacteria. Along with this, the skin provides insulation while regulating heat and cushioning for tissues and organs. This body system also helps with the prevention of water loss, but also allows excretion of things such as urea, salts, and water. The skin has…
The Integumentary System Objective: Identify the skin structures on a model and name the layers of the skin. Also observe the degree of burns on a model. Materials: One skin structure 3-dimensional model One degrees of burn model Procedure: The model was observed for identification of the skin layers and its related structures. The second model was observed for the degrees of burn. Results: The layers of the human skin and the degrees of burn. Observation: The main purpose of…
Definition Cellulitis is an inflammatory condition of the dermis and subcutaneous tissue usually found obstructing a wound, ulcer or dermatosis [10]. Cellulitis is a common bacterial infection. It may appear as a swollen, red area of the skin that will feel hot and tender to touch. Cellulitis can spread to other parts of the body however it is not contagious and cannot spread from person to person. The lower leg of the body is most commonly affected, although cellulitis can occur anywhere…
Skin Portion: Yhara Barba The skin of a human is an elastic covering that acts a protects the body . The skin has many functions that greatly benefit the body. The functions are Protection, sence of touch, and it controls temperfature. Protection: The skin helps to keep bacteria and dangerous stuff out of our body, like germs and dirt that can cause infection. Adding on it helps retain water. Sence of Touch: The skin is hoem of one of our five senses: touch. Within our skin thre are thousands…
1. The three major layers that make up healthy skin are the epidermis, dermis, and the subcutaneous tissue (hypodermis). The epidermis is a keratinized stratified squamous epithelium that resists abrasion and reduces water loss. It consists of four distinct cell types and five layers. The dermis, the second major skin region containing strong, flexible connective tissue. It is composed of dense irregular connective tissue. Also, the dermis contains the blood vessels, nerve fibers and lymphatic…
The chemistry behind make-up involves different types of make-up, and the chemicals it makes up to create the color. The skin and why the skin needs moisturizers is an important part of make-up in which we need chemistry majors to help. Let’s start with the skin; there are three main layers in one’s skin that is the epidermis, dermis, and the hypodermis. One’s deepest layer of skin is known as the hypodermis, it contains layers of fat. Next includes the dermis, which your blood vessels, nerves,…
damage from stage I to stage IV. Pressure ulcers can reduce the overall quality of life for the patient due to pain and increased hospital stay. Many patients will be on pain medications, and many will require debridement. Debridement is the removal of devitalized tissue and foreign matter from the wound. Descriptions and Stages A stage I wound is fairly mild. It has a persistent area of red skin that is intact, not broken. It could be painful. It could be warm and spongy or firm to the touch.…
entering the body. The skin also has numerous sensory neurons that allow one to experience heat, cold, pain, vibration, and touch. It also has a purpose in regulation of fluid and aides in absorption of Vitamin D. If there is a disruption in the skin, problems can occur that prevent the skin from carrying out its important functions. One of the most common skin disruptions that people are exposed to is the sun. While it is essential for life to exist and gives humans essential Vitamin D, the sun…