Template:Integumentary terms: Difference between revisions
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* '''dermal papillae''' - interdigitation of the dermis with the epidermis. | * '''dermal papillae''' - interdigitation of the dermis with the epidermis. | ||
* '''dermatoglyphic patterns''' - (Greek, ''derma'' = "skin", ''glyph'' = "carving") fingers, palms, toes, and soles skin patterns. | |||
* '''dermis''' - connective tissue middle layer of the skin, consists of two sublayers (papillary and reticular layers) that do not have a clear boundary. Embryologically derived from the somite dermatome. | * '''dermis''' - connective tissue middle layer of the skin, consists of two sublayers (papillary and reticular layers) that do not have a clear boundary. Embryologically derived from the somite dermatome. | ||
* '''dermatome''' - The early embryonic dorsal portion of the somite that will contribute the dermis and hypodermis of the skin. Note in the adult, this term is used to the skin sensory region innervated by a single spinal (nerve) segment. [[M#mesoderm|mesoderm]] - paraxial mesoderm - somite - dermomyotome - dermatome - dermis. (More? [[:File:Dermatomes.png|image - skin dermatome]] | [[Somitogenesis]] | [[Musculoskeletal System Development]] | [[Integumentary System Development]] | [[Neural System Development]]) | |||
* '''dermomyotome''' - Early embryonic dorsolateral half of the somite that will later divide to form both the dermatome and myotome. The dermatome will contribute the dermis and hypodermis of the skin. The myotome will contribute the skeletal muscle of muscoloskeletal system. Development sequence: [[M#mesoderm|mesoderm]] to paraxial mesoderm to somite to "dermomyotome" then dermatome and myotome. (More? [[Somitogenesis]] | [[Musculoskeletal System Development]] | [[Integumentary System Development]]) | * '''dermomyotome''' - Early embryonic dorsolateral half of the somite that will later divide to form both the dermatome and myotome. The dermatome will contribute the dermis and hypodermis of the skin. The myotome will contribute the skeletal muscle of muscoloskeletal system. Development sequence: [[M#mesoderm|mesoderm]] to paraxial mesoderm to somite to "dermomyotome" then dermatome and myotome. (More? [[Somitogenesis]] | [[Musculoskeletal System Development]] | [[Integumentary System Development]]) | ||
* '''eccrine gland''' (Greek, ''ekkrinein'' = "secrete"; merocrine glands) sweat glands unique to some primates and used in humans for thermoregulation. Adult body has 2 to 4 million sweat glands with concentrations (700/cm) on the palms of the hand, soles of the feet and forehead. Secretion is timulated by sympathetic nervous system, post-ganglionic cholinergic branch, and other stimuli | * '''eccrine gland''' (Greek, ''ekkrinein'' = "secrete"; merocrine glands) sweat glands unique to some primates and used in humans for thermoregulation. Adult body has 2 to 4 million sweat glands with concentrations (700/cm) on the palms of the hand, soles of the feet and forehead. Secretion is timulated by sympathetic nervous system, post-ganglionic cholinergic branch, and other stimuli | ||
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* <span id="Term-EDC">'''epidermal differentiation complex'''</span> - (EDC) human chromosome (1q2) containing linked 63 genes within four gene families that are molecular markers for stratified epidermis terminal differentiation. | * <span id="Term-EDC">'''epidermal differentiation complex'''</span> - (EDC) human chromosome (1q2) containing linked 63 genes within four gene families that are molecular markers for stratified epidermis terminal differentiation. | ||
* <span id="Term-EGFR">'''epidermal growth factor receptor'''</span> - expressed on cells in the epidermis basal layer, signaling stimulates both epidermal growth and wound healing and also mediates an inhibition of differentiation. | |||
* <span id="Term-freckle">'''freckle'''</span> - See [[#ephilis|ephilis]]. | * <span id="Term-freckle">'''freckle'''</span> - See [[#ephilis|ephilis]]. | ||
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* '''Langerhans cell''' - skin dendritic cell (antigen presenting cell) develops initially from fetal liver monocytes and yolk sac macrophages. May, depending on the immunological setting, elicit immunity or tolerance. Named after Paul Langerhans. | * '''Langerhans cell''' - skin dendritic cell (antigen presenting cell) develops initially from fetal liver monocytes and yolk sac macrophages. May, depending on the immunological setting, elicit immunity or tolerance. Named after Paul Langerhans. | ||
* '''keratinocyte''' - the main cell type forming the layers of the epidermis, derived from ectoderm. | * <span id="Term-keratinocyte">'''keratinocyte'''</span> - the main cell type forming the layers of the epidermis, derived from ectoderm. | ||
* '''keratohyalin granule''' - found in the stratum granulosum consist of profilaggrin and loricrin. | * '''keratohyalin granule''' - found in the stratum granulosum consist of profilaggrin and loricrin. | ||
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* '''pilosebaceous unit''' - term used to describe a hair and its associated structures: hair follicle, arrector pili muscle and sebaceous gland. | * '''pilosebaceous unit''' - term used to describe a hair and its associated structures: hair follicle, arrector pili muscle and sebaceous gland. | ||
* <span id="Term-rete_ridge">'''rete ridge'''</span> - the extensions of the epidermis into the dermis. These epidermal surface thickenings extend downward between underlying connective tissue dermal papillae. This is also the site of initial eccrine gland differentiation. | |||
* '''reticular layer''' - dermis sublayer that appears denser and contains fewer cells with thick collagen bundles lying beneath the papillary layer parallel to the skin surface. (More? [[:File:Adult skin histology 04.jpg|image]]) | * '''reticular layer''' - dermis sublayer that appears denser and contains fewer cells with thick collagen bundles lying beneath the papillary layer parallel to the skin surface. (More? [[:File:Adult skin histology 04.jpg|image]]) |
Revision as of 12:47, 9 October 2017
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