Term
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Definition
1)Hair Bulb
a)Terminal dilation of epidermal invagination
i)Hair (Dermal) Papillae
-Contains rich capillary bed
ii)Hair Matrix
-Germinative cells
-Hair medulla, cortex and cuticle
-Internal root sheath
2)Hair Follicle
a)Internal root sheath
-Derived from hair matrix
b)External root sheath
-Continuous with basal layers of epidermis
c)Connective tissue sheath
-Blends with dermis |
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Term
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Definition
Keratinized Epithelial Structures Derived from Invaginations of the Epidermis
1)Hair
a)Shaft
b)Root
2)Hair Follicle
a)Continuous with Epidermis
b)Germinative Portion
3)Associated Structures
a)Sebaceous Glands
b)Arrector Pili Muscle
c)Apocrine Sweat Glands |
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Term
Dermis (2 layers)
mnemonic: Rest Pillars |
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Definition
Composed of 2 layers
-PAPILLARY DERMIS
-RETICULAR DERMIS
Contain the cell found in connective tissue proper--Fibroblasts, Mast cells, Macrophages, Lymphocytes, Plasma cells, Neutophils, Eosinophils |
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Term
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Definition
1)Keratinocytes
a)Keratin Production
b)Major Cell Type
2)Melanocytes
a)Melanin Production (Stratum Basale)
3)Langerhans Cells
a)Immunity, Dendritic Antigen Trapping Cells Interact With T Cells (Stratum Spinosum)
4)Merkel Cells
a)Tactile Sensation (Stratum Basale) |
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Term
Epidermis (5 layers)
mnemonic: Bitchy Smores Get Loud Calls |
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Definition
Composed of 5 layers: from basement membrane to surface
STRATUM BASALE (GERMINATIVUM)
STRATUM SPINOSUM
STRATUM GRANULOSUM
STRATUM LUCIDUM
STRATUM CORNEUM |
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Term
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Definition
1)THIN SKIN
a)General Body Skin
b)Hairs, Sebaceous Glands, Sweat Glands
2)THICK SKIN
a)Palms and Soles
b)Sweat Glands
c)NO Hair or Sebaceous Glands |
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Term
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Definition
1)Epidermis
a)Keratinized Stratified Squamous b)Epithelium
c)5 layers
2)Dermis
a)Papillary Dermis
b)Reticular Dermis
3)Hypodermis |
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Term
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Definition
1)Protective Barrier
a)Mechanical
b)Microorganisms
c)Prevent Desiccation
2)Thermoregulatory
3)Sensory
4)Excretion of Salts
5)Synthesis of Vitamin D |
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Term
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Definition
1)Exocrine vs. Endocrine
2)Unicellular vs. Multicellular
3)Structure
a)Tubular vs. Alveolar
b)Simple vs. Compound
4)Mode of Secretion
a)Merocrine
b)Apocrine
c)Holocrine |
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Term
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Definition
1)Sweat Glands
a)Eccrine Sweat Glands
b)Apocrine Sweat Glands
c)Sebaceous Glands |
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Term
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Definition
1)Function
a)Thermoregulation
2)Classification
a)Simple Coiled Tubular
3)Mode of Secretion
a)Exocrine (merocrine)
4)Location
a)Throughout integument
b)Secretory portions in deep dermis or hypodermis
c)Ducts empty directly onto surface of epidermis
5)Develops From Epidermis
6)Secretion
a)Water/salts |
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Term
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Definition
1)Function
a)??
2)Classification
a)Simple Coiled Tubular
3)Mode of Secretion
a)Exocrine (apocrine)
4)Location
a)Axilla, anal region, genital regions
b)Secretory portions in dermis
c)Ducts empty into hair follicles
5)Develops From Hair Follicle
6)Secretion
a)Viscous secretion |
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Term
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Definition
1)Function
a)Produces lubricant for thin skin and hair
2)Classification
a)Simple Branched Alveolar
3)Mode of Secretion
a)Holocrine
4)Location
a)Associated with hair follicle
b)Empty directly onto epidermis: Lip, nipple, genital areas
c)Not present: palms or soles
5)Secretion
a)Sebum: Mixture lipids and waxy substances |
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Term
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Definition
1)Free Nerve Endings
2)Merkel Endings
3)Encapsulated Nerve Endings
a)Meissner’s Corpuscle
b)Pacinian Corpuscle
c)Ruffini End Organ
4)Peritrichial Nerve Endings |
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Term
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Definition
1)Free Nerve Endings
2)Merkel Endings
3)Encapsulated Nerve Endings
a)Meissner’s Corpuscle
b)Pacinian Corpuscle
c)Ruffini End Organ
4)Peritrichial Nerve Endings |
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Term
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Definition
-Three Interconnected Networks-
1.Subcutaneous Plexus In Hypodermis
a.Subcutaneous vessels supply skin
2.Cutaneous Plexus
a.Localized at dermal-hypodermal junction (deep dermis)
b.Deep branches supply:
i.Secretory portions of sweat glands, deeper regions of hair follicles and subcutaneous tissue
c.Superficial branches supply:
ii.Excretory portions of sweat glands, sebaceous glands and superficial portions of hair follicle
c. Subpapillary plexus
3)Subpapillary Plexus
a)Junction papillary and reticular dermis
b)Gives rise to capillary loops in dermal papillae
4)Capillary Beds
a)Papillary dermis
b)Around hair matrix of hair follicle
c)Surrounding sweat and sebaceous glands
5)Arteriovenous Anastomoses
a)Bypass superficial capillary networks.
b)Thermoregulation |
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