Connective Tissue (CT) Flashcards
Types of CT
CT proper
Cartilage
Bone
Blood
Functions of CT
connect body parts
support
protection
insulation
transport
Classification
dense vs loose (CT proper)
regular (organised) vs irregular (unorganised)
Components
Fibres
Cells
Ground substance
CT fibres
collagen
reticular (collagen type III)
elastin
Cells
fibrocytes/fibroblasts
adipose cells
macrophages
immunologic cells
Ground substance
glycoproteins (fibronectin and laminin)
proteoglycans (dermatan sulfate, chondroitin sulfate, keratan sulfate, and heparan sulfate)
Glycoproteins
compounds consisting of oligosaccharides linked to proteins at the level of their side chains
Proteoglycans
compounds consisting of protein bounded to glycosaminoglycan (GAG) group -> repeating subunits of disaccharide units that are negatively charged (e.g. hyaluronate)
CT of skin
dermis
hypodermis
Dermis
papillary layer
reticular layer
Papillary layer
adjacent to epidermis (deep)
looser irregular CT
highly vascularised and innervated
collagen type I
Reticular layer
denser irregular CT
more fibrous than papillary
collagen type I
Hypodermis
specialised type of loose CT
Made of adipose tissue
Cartilage classification
elastic (ears)
hyaline (trachea)
articular (long bones)
