Tissues - Epithelial Tissue Flashcards
What does epithelial tissue cover?
All surfaces
What are the four basic tissue types?
Epithelial
Connective
Muscle
Nerve
What does epithelial tissue separate?
Us from the environment.
What is epithelial tissue derived from?
Ectoderm (skin)
Endoderm (respiratory)
Mesoderm (fascia)
What are the functions of epithelial tissue?
Hint: Please Take Silly Sam Saturday
Protection Tissue Absorption Secretion Sensory Specialized functions
How is epithelial tissue made?
Closely grouped cells with little or no intercellular substance.
Is epithelial tissue capable of renewal?
Yes
How is epithelial tissue bound together?
Desmosomes & Hemidesmosomes
epithelial cell to epithelial cell
True or False; epithelial tissue is vascular.
False; it is avascular and receives raw materials from substances it is bound to.
What is unstratified epithelium?
A single layer of cells.
What does unstratified epithelium line?
Blood & Lymph vessels
Heart, Lungs & Kidneys
Glands & Gland Ducts
Inner Enamel Epithelium (produces enamel and is made up of columanr cells)
What is stratified epithelium?
Two or more cell layers.
How is stratified epithelium classified?
Surface layer cell shape.
What are the classifications of stratified epithelium?
Squamous
Cubodial
Columnar
Transitional
Which classification of stratified epithelium is further categorized as keratinized or non-keratinized?
Squamous
What classification of stratified epithelium is associated with salivary gland histology?
Cubodial & Columnar
How is epithelial tissue regenerated?
Superficial cells are lost and new cells are produced at the deepest level.
True or False; Oral epithelial cells renew slower than skin.
False, oral epithelial cells renew faster.
How long does it take for gingival tissue to repair?
4-6 days
How long does it take for oral lining to repair?
10days - 2weeks
The rate of repair of epithelial tissue is dependent upon what factor?
Damage of the connective tissue.
What is basement membrane?
Thin, non-living structure between epithelium and connective tissue.
What two layers is the basement membrane made up of?
Basal Lamina
Reticular Lamina
What is the basal lamina made up of?
Lamina densa & Lamina Lucida
Light & Dark
