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Published byRegina Carpenter
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Organization – Skin Epidermis Dermis – Accessory Structures Hair & Hair follicles Exocrine glands Arrector pili Sensory Receptors
Layers beneath the skin – Subcutaneous layer – Deep fascia ________________________
Functions of the Skin – Protection – Water-resistance – Temperature regulation – Vitamin D synthesis – Sensations – Immunity – Social signaling
–Stratum Germinativum Stem cells Melanocytes Merkel cells The Epidermis
– S. Spinosum “Pre- keratinocytes” Melanocytes Langerhans cells The Epidermis
– S. Granulosum – S. Lucida Keratinocytes in both layers The Epidermis
– S. Corneum Dead keratinocytes The Epidermis
Skin cell-eating mite
Reticular layer – Dense irregular CT – Provides strength and elasticity
The Dermis Papillary layer – Areolar CT – Contains cap’s and sensory neurons for epidermis – Arranged as dermal papillae –
Pigmentation Melanin Carotene Hemoglobin
Epidermal Derivatives Hair Follicles and Hair Skin Glands
Hair Function – Protection – Touch Sensation Structure – Root – Shaft – Bulb
Hair Hair Follicle – Sheath of epithelial cells – Surrounds root – Merges with bulb
Hair Associated structures – Dermal papilla – Sebaceous glands – Arrector pili
Hair Growth Cycle – 2-5 yrs: growth stage – 2 yrs: resting stage
Skin Glands Sebaceous glands – secrete sebum – help to protect hair and skin
Skin Glands Merocrine (eccrine) sweat glands – BT control – excretion – protection
Skin Glands Apocrine sweat glands – Secrete pheromones?
Skin Glands Mammary glands Ceruminous glands
Skin Sensory Receptors Free nerve endings Pacinian corpuscles Meissner’s corpuslces
Lines of Cleavage
MEMBRANES & INTEGUMENTARY SYSTEM. MEMBRANES Cover surfaces, organs Line body cavities Protect, lubricate Two categories -Epithelial tissue membranes -Connective.
The Integumentary System $100 $200 $300 $400 $500 $100$100$100 $200 $300 $400 $500 Epidermis FINAL ROUND Dermis Hair and Nails Glands Grab Bag.
Skin and Somatic Receptors. Epidermis Epidermal Layers Stratum Corneum Stratum Lucidum Stratum Granulosum Stratum Spinosum Stratum Basale (Melanin.
Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings The integumentary system (skin) Roles: protection maintenance of normal body.
Lab #7 Integumentary System. Overview of the Integumentary System.
Fluid Balance Balance: Fluid Balance: Fluid Balance: When the water coming into the body precisely equals the water being lost by the body each day.
Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings Fundamentals of Anatomy & Physiology Frederic H. Martini Lecture 5:Chapter 5.
The Integumentary System Chapter 5. Introduction The integumentary system consists of hair, skin, and nails. The integumentary system consists of hair,
The Integumentary System
Integumentary system. Organization – Skin Epidermis Dermis – Accessory Structures Hair & Hair follicles Exocrine glands Arrector pili Sensory Receptors.
5 C h a p t e r The Integumentary System
INTEGUMENTARY SYSTEM Exercise # 8 Page#73
The Integumentary System 1. Protection Excretion Temperature maintenance Insulation and cushion Vitamin D3 synthesis Sensory detection Integumentary system.
The Integumentary System. Learning Objectives List the components of the integumentary system, including their physical relationships. Specify the functions.
Journal #1: How is the integumentary system (skin) like an onion?
Integumentary System Nestor T. Hilvano, M.D., M.P.H.
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