What is the structure of skin cells?
The outer surface of the skin is the epidermis, which itself contains several layers — the basal cell layer, the spinous cell layer, the granular cell layer, and the stratum corneum. The cells in the epidermis are called keratinocytes.
What are the 4 structures found in the skin?
Introduction. Accessory structures of the skin include the hair, nails, sweat glands and sebaceous glands. These structures embryologically originate from the epidermis and are often termed “appendages”; they can extend down through the dermis into the hypodermis.
What is the structure and function of skin cells?
Keratinocytes are the most common type of cells within the epidermis. Their job is to act as a barrier against bacteria, parasites, fungi, viruses, heat, ultraviolet (UV) rays, and water loss. The epidermis contains no blood vessels.
What are the three main parts of the human skin?
Epidermis. Dermis. Subcutaneous fat layer (hypodermis)
What is the human skin?
The human skin is the outer covering of the body and is the largest organ of the integumentary system. The skin has up to seven layers of ectodermal tissue and guards the underlying muscles, bones, ligaments and internal organs. Though nearly all human skin is covered with hair follicles, it can appear hairless.
What is the structure of the skin and its function?
The skin consists of two layers: the epidermis and the dermis. Beneath the dermis lies the hypodermis or subcutaneous fatty tissue. The skin has three main functions: protection, regulation and sensation.
What are the main structures of the skin?
The skin is composed of two main layers: the epidermis, made of closely packed epithelial cells, and the dermis, made of dense, irregular connective tissue that houses blood vessels, hair follicles, sweat glands, and other structures.
What are the seven layers of skin?
Its 7 layers consist of: epidermis (which is composed of 5 sublayers), dermis, and subcutis. Epidermis – This outer layer, no thicker than a sheet of paper, both shields you from the world and presents you to it. Dermis – This thick middle layer makes up most of your skin.
What are the seven functions of the skin?
Essential Functions of The Skin 1. Protection 2. Sensation 3. Temperature Regulation 4. Immunity 5. Permit Movement and Growth 6. Excretion 7. Endocrine 8. More Functions