ANP 1106 Chapter 5: Note 2 - Integumentary System

• School: University of Ottawa
• Department: Anatomy and Physiology
• Course: ANP 1106
• Professor: Frank Christinck

Document Summary

The skin consists of two layers: the epidermis and dermis. The skin covers the enire body and accounts for about 7% of total body weight. The skin in the largest organ in the body, it constantly divides. Varying in thickness from 1. 5 to 4. 0 millimetres. Variaion in epidermal thickness determines if the skin is thick or thin. Thick skin, which covers areas subject to abrasion- the palms, ingerips, and soles of the feet. Epidermis consist of ive layers, from deep to supericial, these layers are the stratum basale, stratum spinosum, stratum granulosum, stratum lucidum, and stratum corneum. The skin is subjected to a lot of abrasion and physical trauma. Keratohyaline granules, which help to form kerain in upper layers. For this reasons, it provides a durable overcoat for the body, protecing deeper cells from hosile environments (air) and from water loss: thickest on the palm of hand & soles of feet. The dermis consists of papillary and reicular layers.