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)

1/25/2011 3BIO 2870

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

1/25/2011 5BIO 2870

THE INTEGUMENTARY SYSTEM5-1 EPIDERMISII. LAYERS

A. STRATUM BASALE (GERMINATIVUM)

1/25/2011 6BIO 2870

Dermal papilla Epidermal ridge

Basal cell

THE INTEGUMENTARY SYSTEM5-1 EPIDERMISII. LAYERS

B. STRATUM SPINOSUMC. STRATUM GRANULOSUM (KERATINIZATION)

1/25/2011 7BIO 2870

(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

1/25/2011 9BIO 2870

THE INTEGUMENTARY SYSTEM5-3 VITAMIN D3 SYNTHESIS

1/25/2011 10BIO 2870

(Calcitriol)

THE INTEGUMENTARY SYSTEM5-5 DERMISI. LAYERS

A. PAPILLARY LAYERB. RETICULAR LAYER

1/25/2011 11BIO 2870

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

1/25/2011 15BIO 2870

THE INTEGUMENTARY SYSTEM5-7 HAIRV. GROWTH

A. GROWTH (ANAGEN) STAGEB. REGRESSION (CATAGEN) STAGEC. RESTING (TELOGEN) STAGE

1/25/2011 16BIO 2870

THE INTEGUMENTARY SYSTEM5-8 EXOCRINE GLANDS IN THE SKINI. SEBACEOUS (OIL) GLANDS

A. SEBUM

1/25/2011 17BIO 2870

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

1/25/2011 18BIO 2870

THE INTEGUMENTARY SYSTEM5-9 NAILS

1/25/2011 19BIO 2870