Connective Tissue Flashcards
What are the three types of fibres found in connective tissue?
Reticular
Collagen
Elastin
What are the three types of connective tissue?
Loose
Dense Regular
Dense Irregular
What fibre types are found in loose connective tissue?
Reticular
Collagen
Elastin
What fibre types are found in dense regular connective tissue?
Collagen
Elastin
What fibre types are found in dense irregular connective tissue?
Collagen
Elastin
What cells are present in loose connective tissue?
Fibroblasts
Macrophages
Mast cells
WBCs
What cells are present in dense regular connective tissue?
Fibroblasts
What cells are present in dense irregular connective tissue?
Fibroblasts
List 4 functions of loose connective tissue.
- Wraps and cushions organs.
- Macrophages phagocytise bacteria.
- Inflammatory role
- Holds and conveys tissue fluid.
List the functions of dense regular connective tissue.
- Attaches muscles to muscles.
- Attaches bones to bones.
- Attaches muscles to bones.
- Withstands force in one direction.
List the functions of dense irregular connective tissue.
- Provides structural strength.
* Withstands force in many directions.
Where is loose connective found?
- Packages organs.
- Surrounds capillaries.
- Forms lamina propria of mucous membranes (mucosa).
Where is dense regular connective tissue found?
- Tendons
- Ligaments
- Aponeuroses (flat tendons)
Where is dense irregular connective tissue found?
- Dermis of skin
- Submucosa of digestive tract
- Capsules of organs and joints
What is areolar tissue?
- A type of loose connective tissue
- Hold organs in place
- Attach epithelial tissue to other underlying tissues.
- Holds water and salts
What is the lamina propria?
A thin layer of loose areolar connective tissue beneath the basement membrane.
What is mucosa?
The epithelia, basement membrane and lamina propria collectively.
What type of cells contain cigar shaped nuclei?
Fibroblasts
What is the function of fibroblasts?
- Synthesise ground substance (extracellular matrix)
* Synthesise collagen, elastin, fibronectin, reticular fibres.
What are enterocytes?
- Simple columnar epithelial absorptive cells found in the small intestine.
- Contain digestive enzymes.
- Have microvili on the surface.
What are reticular fibres?
- Composed of Type III collagen.
- Secreted by reticular cells.
- Crosslink to form a meshwork.
- Supports soft tissues.
How is unilocular/white fat different from multilocular/brown fat?
- White / unilocular adipose tissue stores energy as fats.
* Brown / multilocular adipose tissue generates heat.
Why is multilocular adipose tissue brown?
Due to the large number of mitochondria.
What is the function of the ground substance?
- Provides viscosity and plasticity to the tissues.
- Provides a medium for intercellular exchange.
- Lubricates collagen fibres.
