Connective Flashcards
Features of connective tissue (3)
connects and binds
support and shape
facilitates communication
Functions of connective tissue (5)
mechanical support and protection storage defense repair communication and transport
Structure of connective tissue (3)
cells
fibres
ECM
Classification (constituents)
fibres < cells = loose
fibres > cells = dense
Classification (arrangement)
parallel = regular non-parallel = irregular
Function of dense regular
binds bones together and attaches muscle to bone
eg. tendons and ligaments
Functions of dense irregular
protect organs from injury, tough
eg. dermis of skin, capsules around organs
Functions of loose (4)
cushions and nourishes epithelia
arena for immune defense
binds organs
allows passage for nerves and blood vessels
eg. underlines all epithelia, outer coverings of blood vessels
Types of loose connective tissue (3) and their function and location
- areolar tissue (strength, elasticity, surrounds vasculature and nerves)
- adipose tissue (energy, insulate, protect, surrounds organs and under skin)
- reticular tissue (support and binding of organs, liver, kidney, ….)
Extracellular matrix (function, composition, location)
support surrounding cells
regulate communication and transport
clear, colourless, glycans, protein, water molecules
secreted by CT cells
viscosity: restricts penetration by bacteria
oedema (swelling): abnormal accumulation of interstitial fluid
Three types of fibres
collagen
elastin
reticular
Collagen (function, location)
strength and cushioning function depends on amount and arrangement
cartilage, bone, tendon, ligament
Elastin (function, location)
coil and recoil, flexibility
skin, arteries, bronchi
Reticular (function, location)
form delicate, irregular, flexible framework, inelastic, support cellular structures
spleen, liver, marrow
Cells for structure and storage (2)
fibroblasts, adipocytes