Epithelial & Connective tissue Flashcards
Name the epithelial tissues
Squamous
Cuboidal
Columnar
Simple, stratified, psuedostratified
General function of epithelial tissues
- Absorbtion, secretion & protection
General location of epithelial tissues
- Lines the bodies surfaces (internal & external)
Simple squamous (structure)
A single layer of flat cells
Stratified Squamous (structure)
Two or more cell layers piled on each other
Simple cuboidal (structure)
A single thick layer of cube shaped cells
Stratified cuboidal (structure)
Multiple layer of cube-shaped cells
Simple columnar (structure)
A single layer of tall, narrow cells with an oval shaped nucleus
Stratified columnar (structure)
Multiple layers of tall, narrow cells
Pseudostratified columnar (structure)
Closely packed
Appear to be arranged in layers but is just 1
Simple squamous (function & location)
- Allows selective diffusion
- Blood & lymphatic vessels
Stratified squamous (function & location)
- Protection against water loss & invading pathogens
- Outer skin layer (epidermis), mouth, vagina
Simple cuboidal (function & location)
- Allows absorbtion & secretion
- Lines kidney tubules, ovaries & testies
Stratified cuboidal (function & location)
- Structural reinforcement
- Lines excretory ducts of glands, salivary & sweat
Simple columnar (function & location)
- Nutrient absorbtion, secretion e.g. mucus
- Lines the small intestine, digestive tract
Stratified columnar (function & location)
- Protection & secretion
- Conjunctiva (mucus membrane) of eyelids
Pseudostratified columnar (function & location)
- Secrete mucus which is moved with cilia
- Trachea, most of the upper respiratory tract
Basement membrane
Supports the epithelial tissue
Order these smallest to largest:
- Organs
- Cells
- Tissues
- Organism
- Organ systems
- Cells
- Tissues
- Organs
- Organ systems
- Organism
