Chapter 5 Anatomy and Physiology: Integumentary System Lecture

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This is the Integumentary System lecture for Human Anatomy & Physiology Chapter 5. Please leave questions in the comments below or email directly at fmajoo@gmail.com Text: Elaine Marieb & Katja Hoehn Human Anatomy and Physiology 10th edition. Pearson Education Inc 2016. The Human Body: An Orientation. Topics covered: Skin Epidermis Dermis Hypodermis superficial fascia subcutaneous layer Keratinocytes keratin Melanocytes Melanin Dendritic Cells (Langerhans cells) Tactile Cells (Merkel cells) Thick skin Thin skin Four or 5 Distinct Strata of Epidermis Stratum Basale Stratum Spinosium Stratum Granulosum Stratum Lucidum Stratum Corneum Stratum Germinativum Prickly later prickle cells granular layer Keratohyaline Granules Lamellar Granules Clear Layer Horny Layer Apoptosis Dermis Layers of Dermis Papillary Layer Reticular Layer Dermal Papillae Tactile Corpuscles Meissner's Corpuscles Epidermal Ridges Friction Ridges Dermal Ridges Cleavage lines Tension Lines Flexure Lines Striae stretch marks blisters melanin skin pigments skin color Carotene Hemoglobin Skin photosensitivity Cyanosis Erythema Pallor Jaundice Bronzing Bruises Hair Pili Cortex Medulla Cuticle Hair Regions Hair Structure Hair Life Cycle Hair Color Pheomelanin Hair bulb Hair follicle receptor / Root hair plexus Peripheral Connective Tissue Sheath Fibrous Sheath Epithelial Root Sheath Hair Matrix Arrector Pili Hair Papila Vellus HAir Terminal Hair Hirsutism Alopecia Baldness Male Pattern Baldness DHT (Dihydrotestosterone) Causes of Hair loss Nails Nail Matrix Nail bed Free edge Nail plate Root Nail folds Eponychium (cuticle) Hyponychium Lunule Sweat glands ( Sudoriferous glands ) Eccrine sweat glands Merocrine sweat glands Apocrine sweat glands Ceruminus glands cerumen ear wax Mammary glands oil glands Sebaceous Glands Sebum whiteheads blackheads acne pustules cradle cap seborrhea Skin functions protection body temperature regulation Cutaneous sensation Metabolic function blood reservoir excretion of wastes chemical barrier physical barrier biological barrier Acid Mantle defensins Insensible perspiration Sensible Perspiration Cutaneous Sensory Receptors Skin cancer Burns Basal Cell Carcinoma (BCC) Squamous Cell Carcinoma (SCC) Melanoma Rule of Nines Burns Classification First-degree burn Second-degree burn (partial-thickness burn) Third-degree burn Debridement Lanugo Coat Vernix caseosa Aging skin Skin health

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