Connective Tissue Flashcards
Connective tissue characteristics
1.Under the surface(under epithelial) “padding”
2.Made of ct cells and extracellular matrix(protein fibers& ground substances)
3.vascular (has blood cells)
3 components of CT
1.Cells
2. Protein Fibers
3. Ground substance
Cells of CT
Fibroblast: makes & secretes protein fibers
•Adipocytes(fat cells) •Osteocytes(bone cells) • Chondrocytes(cartilage cells)
Protein fibers of CT
Collagen (firm) and Elastic (springy)
Ground substance of CT
-solid/hard (bone)
- rubbery (cartilage)
- liquid (blood)
Areolar Connective Tissue location
superficial layer of dermis(part of skin) “padding” surrounding muscle cells, organs, nerves and blood vessels.
Areolar CT Function
Support, cushioning, padding
Dense Irregular Tissue
1.Cells: fibroblast 2. Collegen (“swirly arrangements 3. Ground substance: gel
Location of Dense irregular Tissue
Deep layer of dermis (part of skin), walls of arteries and organs.
Function of Dense irregular Tissue
Stretch in any direction
Dense Regular Tissue
- Cells: fibroblasts 2. Fibers: Collagen (parallel arrangement) 3. Ground substance: Gel (almost none)
Dense Regular tissue location
Tendons, ligaments
Dense regular tissue function
Stretch in one direction only
Adipose CT
- Cells: adipocytes 2. Fibers: collagen(scarce) 3. Ground substance: gel (scarce)
Adipose CT Location
Hypodermis/Subcutaneous (fatty layer under skin)