TISSUES Flashcards
A group of similar cells with similar structure
Tissue
The microscopic study of tissue structure
Histology
Four Basic Types of Tissues
Epithelium
Connective
Nervous
Muscle
Covers and protect surfaces, both outside and inside of the body
Epithelium
Tissue type that makes up the part of every organ in the body
Connective
Makes movement possible by contracting or shortening
Muscle
Responsible for coordinating and controlling many body activities
Nervous tissue
Exposed and not attached to other cells
Free/Apical Surface
Surface between epithelial cells
Lateral Surface
Cells attached to other epithelial cells
Lateral Surface
Attaches cells to the epithelial tissues
Basal Surface
Surface that is located at the base of the tissue
Basal Surface
Helps attach cells to the underlying tissues; Act as filter and barrier
Basement Membrane
Functions of Epithelial Tissue
Protects
Barrier
Diffusion and Filtration
Secretion
Absorption
Opening of glands where secretion pass through
Ducts
Classification according to the number of cells
Simple
Stratified
Pseudostratified
Single layer of cells
Simple Epithelium
More than one layer / multiple layers
Stratified Epithelium
Epithelium that appears to be stratified but is not.
Pseudostratified Epithelium
Modification of stratified epithelium that can be greatly stretched / STRETCHABLE
Transitional
Shape of cells
Squamous
Cuboidal
Columnar
Flat or scale like cells
Squamous
Cube like shape cells
Cuboidal
Tall and thin
Columnar
Composed of dead cells containg protein keratin, durable, moisture resistant, dry character
Keratinized
In the deepest, outermost layers, moist
Non-Keratinized
Specialized mucus producing cells
Goblet cells
1 layer of flat like cells
Simple Squamous
1 layer of cube like cells
Simple cuboidal
1 layer of tall, narrow cells
Simple columnar
1 layer of tall, narrow cells, appears stratified but it not
Pseudostratified columnar
Clear, thick fluid that protects the lining of the intestines
Mucus
Propels materials or debris
Cilia
What epithelium can be found in the lining of stomach and intestines
Simple Columnar Epithelium
What epithelium can be found in ureter, urinary bladder, and urethra?
Transitional Epithelium
Inrease cell’s surface area
Microvilli
Move material across the cell’s surface
Cilia
Produce mucus
Golblet cells
What are the cell connections
Tight junctions
Gap junctions
Desmosomes
Hemidesmosomes
Bind adjacent cell together
Tight Junctions
Mechanical links that bind cells
Desmosomes
Bind cells to the basement membrane
Hemidesmosomes
Allow small molecules and ions to pass
Gap junctions
Structures that secrete substances onto a surface
Glands
Secretory organs
Glands