INTEGUMENTARY SYSTEM Skin thin type thick type Keratinized adnexa hair

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Presentation transcript:

INTEGUMENTARY SYSTEM Skin thin type thick type Keratinized adnexa hair nail Nonkeratinized adnexa small sweat glands great sweat glands sebaceous glands mammary glands

Skin (integumentum) Epidermis Dermis (corium) Hypodermis stratum corneum proprium (stratum lucidum) stratum granulosum stratum spinosum stratum basale Dermis (corium) pars papillaris pars reticularis Hypodermis

Epidermis melanocytes dermis

melanin melanocytes

Thin skin Thick skin Occurrence: palma manus, planta pedis

Skin glands small sweat (ecrine) large sweat(apocrine) sebaceous (holocrine) Gll. sebaceae Gll. sudoriferae General structure of glands: excretory portion (ducts) secretory portion - glandular cells - myoepithelial cells https://dentalday.wikispaces.com/

SWEAT GLANDS (gll. sudoriferae) small eccrine SWEAT – H2O, NaCl2, NH3, urea, uric acid, proteins

SWEAT GLANDS (gll. sudoriferae) large apocrine after pubery complete sweat –pheromones, fats, steroids; under hormonal influence

Skin from axilla – great sweat glands (apocrine, aromatic)

Sebaceous glands (HES) m. arrector pili hair follicle

Sebaceous glands (HE)

Mamma non lactans (HE)

Mamma non lactans (HE)

Mamma lactans (HE)

Skin from axilla (HE)

Hair (HES) m. arrector pili

Hair – bulbus pili with melanocytes (HES)

Hair – bulbus pili with melanocytesy, papilla pili (HES)

Hair (eng) – Vlas (cs) – Pilus (lat) 3 Hair (eng) – Vlas (cs) – Pilus (lat) 2 1 dermal sheath (1) outer epithelial sheath(2) Henle Huxley cuticle of sheath of hair cortex medulla dermal papilla blood capillaries inner epithelial sheath (3) hair melanocyte

Nail (eng) – Nehet (cs) – Unguis (lat) – Onyx (gr)

Nail (eng) – Nehet (cs) –Unguis (lat) – Onyx (gr) Longitudinal section Cross section vallum unguis nail plate sulcus unguis epidermal bed dermal bad bone

INTEGUMENTARY SYSTEM Slides: 69. Skin from tip of finger 70. Skin from axilla 71. Skin with hair 72. Nail 73. Mamma non-lactans 74. Mamma lactans  

Development of epidermis and corium differentiated epidermis basal intermediate layer periderm layer ectoderm mesenchyme primitive differentiated dermis dermis

Development of sweat glands of lumen in glandular ducts convolution of secretory portion epidermis ectodermal bud ectodermal peg

Development of mammary line and gland B, C: primary and secondary ectodermal buds ingrowth mesenchyme

Development of hair and sebaceous gland epidermis peg bud hair bulb mesenchyme hair follicle hair root sebaceous gl. papilla

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