Tissues (lab) Flashcards
What is a tissue
Group of similar cells working together for a common function
What is an organ
2 or more tissue types working together for a particular function
4 primary tissues types
Epithelial
Connective
Muscle
Nervous
Nervous tissue
Internal communication
-brain spinal cord nerves
Muscle tissue
Contracts to cause movement
-muscles attached to bones (skeletal)
-muscles of heart (cardiac)
-muscles of walls of hallow organs (smooth)
Epithelial tissue
Forms boundaries between different environments, protects, secretes, absorbs, filters
-skin surface (epidermis)
-lining of GI tract organs and other hollow organs
Connective tissue
Supports, binds, protects other tissues together
-bones
-tendons
-fat and other soft padding tissue
2 main types of epithelial tissues
- Covering and lining epithelial
- on external and internal surfaces - Glandular epithelia
-secretory tissue in glands of body
1 layer of epithelial tissue
Simple epithelium
1+ layers of epithelium
Stratified epithelium
*pseudo-stratified
3 shapes of cells for epithelial tissue
Squamous
Cuboidal
Columnar
*transistional
How do we figure out the correct shape of epithelial tissue cells
According to the apical layer of cells
Where can you find simple squamous
Frog skin
Where can you find simple cuboidal
Kidney tubules
Where can you find simple columnar
Jejunum of small intestine
Where can you find pseudostratifed ciliated columnar
Trachea
Where can you find stratified squamous
Human skin
Where can you find transitional epithelium
Urinary system
What is the most abundant and widely distributed tissue type
Connective tissue
4 classes of connective tissue
Connective tissue proper
Cartilage
Bone tissue
Blood
What 2 things do connective tissues have
- Mesenchyme as their common tissue or origin
- Cells separated by nonliving ECM
3 basic elements of connective tissue
Cells
Ground substance
Fibers
3 types of muscle tissue
Skeletal muscle
Cardiac muscle
Smooth muscle
3 parts of skin (integument)
Epidermis
Dermis
*hypodermis
3 derivatives/appendages of integument
Cutaneous glands
Hair
Nails
2 major regions of skin
Epidermis- superficial region
Dermis- deep region
What does connective tissue support
Epithelial tissue
