tejido epitelial Flashcards

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1
Q

que es el tejido epitelial

A

tejido que recubre, protege

piel y mucosa

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2
Q

formas de tejido epitelial

A

epitelio

glandulas

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3
Q

epitelio es

A

celulas unidad como barrera

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4
Q

glandula es

A

celula invaginada que secreta saliva, cera, grasa, sudor

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5
Q

funciones del tejido epitelial

A
proteccion 
transporte de moleculas
secrecion
absorcion
permeabilidad selectiva
deteccion de sensaciones
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6
Q

calsificacion segun su forma

A

escamoso
cubica
cilindrica

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7
Q

clasificacion segun sus capas

A

simple

estratificado

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8
Q

donde se encuentra el mesotelio

A

en vias urinarias capa de celulas

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9
Q

donde se encuentra el endotelio

A

capa de celulas en vasos sanguineos

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10
Q

que es la luz

A

espacio de una cavidad

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11
Q

donde se encuentran las celulas ciliadas

A

en traquea

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12
Q

tipos de uniones de celulas epiteliales

A

union de oclusion: evitan el paso a sustancias extrañas

union de anclaje: permiten la adherencia

union comunicante: permite el transporte de iones

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13
Q

union celula con celula (oclusion)

A
proteinas
claudinas y ocludinas
tiene canales acuosos
evita el paso
parte superior modifica la membrana 
se coencta a actina
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14
Q

union adherente

A
proteinas
cadherinas
evita el paso
parte media no modifica la membrana 
se coencta a actina
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15
Q

desmosoma

A

da resistencia
tiene placas de union
proteinas
afadina-nectina

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16
Q

uniones comunicantes o tipo gap

A

son proteinas conexinas
6 conexinas forman un conexon
tienen un hueco que permite el paso