Chapter 5 The Integumentary System Flashcards

1
Q

4 Parts of the Cutaneous Membrane: Epidermis, Dermis, Papillary ______ Reticular

A

Largest Sys of Body - 16% body weight

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2
Q

2 Components of the Integumentary System are

A

Cutaneous membrane and accessory structures

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3
Q

Cutaneous - Outer Epidermis (Superficial Epidermis , Inner Dermis (Connective Tissue

A

Accessory Structures Originate In Dermis, Extend through Epidermis, Hair & Follicles - Exocrine Glands and Nails

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4
Q

Epidermis Thin Skin, 4 layers Bottom up - Stratum Basale - Spinosum - Granulosum - Corneum , Keratinocytes, Body’s most abundant.

A

Epidermis Thick skin , Finger pads - 5 layers, Stratum Basale - Spinosum - Grandulosum - Lucidum - Corneum

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5
Q

Functions of Int Syst - Protect underlying tissue, Excrete Salt water waste, Maint Temp,

A

Produce Melantin, Keratin (Protein), D3, Lipids Storage, Sensory to touch, Coord Immune response

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6
Q

Tactile Corpusle - Feelings

A

Aerrctor Pili Muscle - goose bumps

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7
Q

Dermis - Between EpiDerm and Subcu - Supports EpiDerm -

A

Anchors Accessory Structures - Hair - Sweat Glands

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8
Q

Keratin = Protein - Large Amts in Stratum Spinosum

A

Cutaneous & Subpapillary Contains - Blood Vessels and Sensory Receptors

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9
Q

Thick Skin - Palms and Soles, Finger Pads

A

Subcutaneous - Loose Connective tissue below the Dermis

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10
Q

Reticular Layer - Extensive Distention ____ Stretch Marks, Reticlular Layer

A

UV causes excessive skin sag

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11
Q

Hair _____ made up from Keratinized dead cells

A

Hair is formed in the folicles

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12
Q

Dermis - 1) Outer Papillary Layer 2) Deep Reticular Layer

A

Tactile Discs - Melanocytes , Tactile Corpusles - Feeling Touch

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13
Q

Hair color produced by Melanocytes at the Hair Matrix

A

Hair color is Determined by Genes

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14
Q

Vellus hair ____ peach fuzz Soft fine hair, covers most of body

A

Terminal Hairs - Head Eyebrows and Eyelashes (Heavy Pigment)

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15
Q

Epedermis - Stratified Squamous Epithelium

A

Is Avascular - (without)

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16
Q

Hair growth cycle ____ grow and shed

A

Cutaneous Plexus - arteries in the skin form.

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17
Q

Sebaceous (oil glands) and Sweat Glands are Endocrine Glands

A

Eccrine Sweat Glands - Holocrine Glands - Sensible Perspiration (Watery Substance)

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18
Q

2 Types of Sweat Glands Apocrine ____ and Eccrine

A

Ceruminous Gland - Ear Wax

19
Q

Apocrine Sweat Glands: produces - odorous secretions

A

Eccrine Sweat Glands, more numerous and produce watery secretions

20
Q

Stratum Basale (Germinativum), Stratum Spinosum, Granulosum, Lucidum (thick skin only) and Stratum Corneum

A

Thin Skin covers most of body, most abundant

21
Q

Papillary Layer - Aerolar Tissue, Blood Vessels, Lymph vessels, Sensory Nerves

A

Epidermis - Insensible Perspiration - Diffuses across Epidermis - Evaporates - 500ml daily, increases from burns

22
Q

Mammory glands ____ Apocrine glands

A

Epidermis Eccrine Gland- Sensible Perspiration- Water from Sweat Glands

23
Q

Nails Keratinized epidermal cells protect fingers ____ toes

A

Reticular Layer - Collagen - Elastic Fibers - Collagen Bundle Tension Lines

24
Q

Epidermal Growth Factor (EGF) - Peptide Growth - Produce Salivary Glands and Duodenum

A

Functions - Division of Basal Cells, Accels Keratin, Epidural Repair, Granular Secretions

25
Q

Hair division occurs in ____ shaft

A

Contusions - broken blood vessels

26
Q

2 types of Exocrine glands: Eccrine and Sweat glands

A

Hair has - Medulla (Core of soft Keratin, Cortex (Hard Keratin), Cuticle (Superficial Layer of dead cells that protect)

27
Q

Two Ways of Water loss Sensible Perspiration , Insensible Perspiration.

A

Sensible Perspiration 500ml per day.

28
Q

The darker the skin ______ more Melanin the Melanocytes produce

A

Skin Tone - Melatin (Brown) & Carotine (Orange, Found in orange Veggies, Deep Dermis, Converts to Vit A)

29
Q

Dermal Blood Supply - Cutaneous Plexus - Deep network of Arteries - Reticular Layer

A

Subpapillary Plexus - Small arteries, Capillaries - Contusions (bruises) - broken blood vessels

30
Q

Subcutaneous layer (Hypodermis) - Deep to dermis, connects to Reticular Layer, Stabilizes Skin, Primarily Adipose,

A

Large arteries and veins - Site for Subcu injections (Hypodermic Needles)

31
Q

Melanin - Red yellow - Brown Black, Produce Melanocytes, Stored in Melanosomes, Darker more numerous

A

Protects from UV, small amts ok, but too much can damage DNA, cause cancer

32
Q

Blood Flow, Oxygen influence skin color, Blood Vessels Dilate from heat (reddens skin) - Constrict from cold (Pales skin)

A

Hemoglobin Dark Red Less O2 (Released), Cyanosis (Blue skin) Extreme cold, heart failure or severe asthma.

33
Q

Illness - Jaundice - Bile Build up (Yellow), Pituitary Tumor - Excessive (Melanocyte Stimulating Hormone MSH)

A

Addison’s Disease - Excessive Adrenocorticotropic hormone (ACTH), Vitiligo - Loss of Melanocytes (Blanching of skin)

34
Q

Epidermal Produce D3, Also produced in Liver and Kidneys, lack of D3 - Rickets

A

D3 essential for adsorption of Calcium and phosphate

35
Q

Accessory Structures of the Skin - Hair, Sebaceous and Sweat Glands, and Nails

A

Derived from Embryonic Epidermis, Located in Dermis, Projects to skin surface.

36
Q

Hair, covers most of body (except palms of hands, sides of fingers - toes - soles lips portions of external genitalia

A

Hair function - protect insulate, guard openings from particles and insects, receptory sensors

37
Q

Hair Follicles - Deep into Dermis, Non-Living, Wrapped Dense connective tissue, Base Surrounded by nerves (Root Hair Plexus)

A

Arrector Pili - Smooth Involuntary Muscle, causes hair to stand up, Goose Bumps

38
Q

Hair production - Begins at Hair Bulb @ base, Surrounds Hair Papilla (Connective tissue - Capillaries & Nerves)

A

Hair Bulb - Epithelial Cells Called “Hair Matrix”

39
Q

Subcutaneous Layer - Connects Dermis to underlying tissue

A

Cutaneous Plexus - Where arteries in the skin form. Subpapillary Plexus - Blood and Nerves and Gland Cells

40
Q

Nails- Made of Keratin, Protects Fingers and Toes, Nail body covers bed, Root production, Free Edge

A

Darker the Skin, Higher the Melanin Melanocytes Produce.

41
Q

Keratin - Fiberous Protein for strength and water resistance.

A

Epidermus Cell Division - Stratum Basale - 7 to 10 days

42
Q

Sensible Perspiration - get rid of waste.

A

2 types of Exocrine Glands - Eccrine and Sweat

43
Q

Mast Cell - Histomine

A