Copy of Anatomy Physiology (Chapter 5 Integumentary System) PDF

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INTEGUMENT

The integumentary system con structures, such as ha FUNCTION OF INTEGU PROTECTION. The skin provides pro ultraviolet light. It also prevents mic and reduces water loss, thus preven SENSATION. The integumentary sy detect heat, cold, touch, pressure, an VITAMIN D PRODUCTION. When ex produces a molecule that can be tran important regulator of calcium hom TEMPERATURE REGULATION. The skin’s surface and the activity of sw

EPIDE A. EPIDERMIS The most superficial layer of skin Layer of epithelial tissue that rests on dermis Stratified squamous epithelium Avascular

EPIDE EPIDERMIS Most superficial stratum of the epidermis Consists on average of 25 to 30 layers of flattened dead keratinocytes Cells are continuously shed and replaced by cells from deeper strata

STRATUM CORNEUM Increased number of layers of the stratum corneum due to friction

DER B.DERMIS Composed of dense collagenous connective tissue

DERMAL PAPILLAE small nippled-shaped structures that project into the under surface of the epidermis Upper part of the dermis Contain many blood vessels that supply the overlying epidermis.

DER DERMIS A form of internal scarring, can result from the internal damage to dermis that occurs when the skin is stretched to much

DER

DERMIS Ult

i l t li ht i

li ht

SUBCUTANE Also known as HYPODERMIS Loose connective tissue, including a the body's stored lipids Attaches skin to underlying bone a vessels and nerves

ACCESSORY S

INTEGUMENT A bluish color to the skin caused by decreased blood O2 content. an indication of impaired circulatory or respiratory function

BUR Part of the stratum basale remains viable, and regeneration of the epidermis occurs from within the burn area. Subdivided into: First degree burn Secon degree burn

Damage both the epidermis and the dermis Minimal dermal damage: Redness, pain, edema &

BUR

BUR

SKIN CA Most common type of cancer Most often is associated with exposu sun PREDISPOSING FACTOR: Fair-skinned Older than 50 years old

The most frequent type Begins with cells

Develops cells imm

SKIN DI is an allergic reaction that manifests as dry, itchy patches of skin that resemble rashes. It may be accompanied by swelling of the skin, flaking, and in severe cases, bleeding. Many who suffer from eczema have antibodies against dust mites in their blood, but the link between eczema and allergy to dust mites has not been proven. Symptoms are usually managed with moisturizers, corticosteroid creams, and

SKIN DI

SUMM FUNCTIONS OF INTEGUMENTARY The integumentary system consists of the skin The integumentary system protects us from th Other functions include sensation, vitamin D p excretion of small amounts of waste products. SKIN EPIDERMIS 1. The epidermis is stratified squamous epitheli New cells are produced in the stratum basal The stratum corneum consist of many layer The most superficial layers are sloughed. 2. Keratinization is the transformation of strat Structural strengths result from keratin ins hold the cells together DERMIS 1.The dermis is dense connective tissue. 2. Collagen and elastic fibers provide structura ill l th id i ith t i t

SUMM GLANDS 1.Sebaceous glands produce sebum, which oils 2. Eccrine sweat glands produce sweat, which 3.Apocrine sweat glands produce an organic s down by bacteria. NAILS 1.The nail consists of the nail body and the na 2. The nail matrix produces the nail, which is c containing hard keratin. PHYSIOLOGY OF INTEGUMENTARY PROTECTION The skin reduces water loss, prevents the en protection against abrasion and ultraviolet functions. SENSATION The skin contains sensory receptors for pain

SUMM SKIN CANCER 1.Basal cell carcinoma involves the cells of th 2. Squamous cell carcinoma involves the cells basale and can metastasize. 3.Malignant melanoma involves melanocytes

REFERENCE Seeley's Essentials of Anatomy and Physiology No Copyright Intended....