tailieunhanh - Ebook Netter's histology flash cards (updated edition): Part 2

(BQ) Part 2 book "Netter's histology flash cards" presents the following contents: Integumentary system, upper digestive system, lower digestive system, liver, gallbladder, and exocrine pancreas, respiratory system, urinary system, male reproductive system, female reproductive system, eye and adnexa. | Thin Skin 3 5 Integumentary System 11-1 Thin Skin 1. Duct of eccrine sweat gland 2. Stratified squamous epithelium epidermis 3. Sebaceous gland 4. Arrector pili muscle 5. Hair bulb 6. Cutaneous nerve Comment The integument is the largest organ of the body. It consists of skin skin appendages nails hair sweat glands and sebaceous glands. The total weight and surface area of skin in the adult is 3 to 5 kg and to 2 m2 respectively. Skin is a protective barrier against injury infectious pathogens and ultraviolet radiation. Skin also assists in body temperature regulation ion excretion sensory reception and vitamin D synthesis. It has a remarkable regenerative capacity. Skin may be classified as thick or thin depending on structural complexity and thickness of the epidermis. Thin skin covers most of the body surface whereas thick skin is restricted to the palms of the hands and soles of the feet. Dermis of thin skin normally contains most skin appendages such as hair follicles sweat and sebaceous glands. Skin cancer is the most common malignant disease in North America. The 3 major types are basal cell and squamous cell carcinoma arise from keratinocytes and melanoma originates from melanocytes . Basal cell carcinoma accounts for more than 90 of all skin cancers. It grows slowly and seldom spreads to other parts of the body. Schematic of skin and its appendages that shows the epidermis dermis and subcutaneous connective tissue Integumentary System See book and Thick Skin 6 5 T 1X10 X Integumentary System .