chapter 5
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BIO 2870Winter 2011Wayne State University
THE INTEGUMENTARY SYSTEM5-0 INTRODUCTION
1/25/2011 2BIO 2870
THE INTEGUMENTARY SYSTEM5-0 INTRODUCTIONI. COMPONENTS OF INTEGUMENTARY SYSTEM (W/O NAILS)
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CUTANEOUSMEMBRANE
(Meissner’s)
(Pacinian)
THE INTEGUMENTARY SYSTEM5-1 EPIDERMISI. CELLS
A. KERATINOCYTESB. MELANOCYTESC. LANGERHANS CELLSD. MERKEL CELLSE. BASAL CELLS
1/25/2011 4BIO 2870
(germinativum)
Basal cell
THE INTEGUMENTARY SYSTEM5-1 EPIDERMISI. LAYERS
A. THIN SKINB. THICK SKIN
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THE INTEGUMENTARY SYSTEM5-1 EPIDERMISII. LAYERS
A. STRATUM BASALE (GERMINATIVUM)
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Dermal papilla Epidermal ridge
Basal cell
THE INTEGUMENTARY SYSTEM5-1 EPIDERMISII. LAYERS
B. STRATUM SPINOSUMC. STRATUM GRANULOSUM (KERATINIZATION)
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(LangerhansCell)
THE INTEGUMENTARY SYSTEM5-1 EPIDERMISII. LAYERS
D. STRATUM LUCIDUME. STRATUM CORNEUM
i. INSENSIBLE PERSPIRATION
1/25/2011 8BIO 2870
THE INTEGUMENTARY SYSTEM5-2 SKIN PIGMENTATIONI. EPIDERMAL PIGMENTATION
A. CAROTENEB. MELANIN
II. DERMAL PIGMENTATIONA. CIRCULATION
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THE INTEGUMENTARY SYSTEM5-3 VITAMIN D3 SYNTHESIS
1/25/2011 10BIO 2870
(Calcitriol)
THE INTEGUMENTARY SYSTEM5-5 DERMISI. LAYERS
A. PAPILLARY LAYERB. RETICULAR LAYER
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THE INTEGUMENTARY SYSTEM5-5 DERMISII. STRENGTH AND ELASTICITY
A. STRETCH MARKS
III. LINES OF CLEAVAGE
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THE INTEGUMENTARY SYSTEM5-5 DERMISIV.DERMAL BLOOD SUPPLY
V. INNERVATION OF THE SKIN
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THE INTEGUMENTARY SYSTEM5-6 HYPODERMIS
STABILIZES THE POSITION OF THE SKIN RELATIVE TO THE UNDERLYING TISSUES,
WHILE PERMITTING INDEPENDENT MOVEMENT OF THE TWO LAYERS ADIPOSE (ENERGY RESERVE, SHOCK ABSORBER AND THERMAL BLANKET) SUBCUTANEOUS INJECTION SIGHT
1/25/2011 14BIO 2870
THE INTEGUMENTARY SYSTEM5-7 HAIRI. STRUCTURE
II. FUNCTION
III. TYPESA. VELLUSB. TERMINAL
IV. COLOR
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THE INTEGUMENTARY SYSTEM5-7 HAIRV. GROWTH
A. GROWTH (ANAGEN) STAGEB. REGRESSION (CATAGEN) STAGEC. RESTING (TELOGEN) STAGE
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THE INTEGUMENTARY SYSTEM5-8 EXOCRINE GLANDS IN THE SKINI. SEBACEOUS (OIL) GLANDS
A. SEBUM
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THE INTEGUMENTARY SYSTEM5-8 EXOCRINE GLANDS IN THE SKINII. SWEAT GLANDS/ SUDORIFEROUS GLANDS
A. APOCRINE SWEAT GLANDSi. SCENT
B. MEROCRINE (ECCRINE) SWEAT GLANDSi. SENSIBLE PERSPIRATIONii. COOLINGiii. EXCRETIONiv. PROTECTION
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THE INTEGUMENTARY SYSTEM5-9 NAILS
1/25/2011 19BIO 2870
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