Connective tissue Flashcards
connective tissue function and structure
few cells lost of extracellular matrix
connects binds supports strengthen protects insulates transport compartmentalise provide energy - fat, bone, cartilage, blood
composition
cells - produce the ecm
ground substance (extracellular, fibres) extracellular matrix
ground substance connective tissue
fills space between cells
space where fibres are suspended
fibres
collagen - rigidity and strength
elastic - stretch and distension
reticular - supporting network/filter
classes connective tissue
connective tissue (CT) proper
cartilage
bone
blood
CT proper
loose - areolar, adipose, reticular
dense - regular, irregular, elastic
areolar ct
loose packing, support and binding
widely distributed - immediate under epithelial
adipose
nutrient storing ability, insulation, shock absorption and protection
fat
reticular
forms a framework to support cells
lymph nodes, spleen bone marrow
regular dense
attachment - ct bundles highly organised and aligned
tendons, ligaments
irregular dense
provides strength and stretching in multiple directions (cells not aligned)
skin dermis, fibrous covering surrounding bones, cartilage, organ capsules
elastic
high recoil and strength
walls of arteries
ligaments between spinal vertebrae
cartilage
cartilage cells within rigid matrix
avascular and not innervated (slow repair)
provide protections, flexibility, rigidity and withstand pressure
type cartilage
hyaline - prevent wear and tear - rib cage trachea nose
fibrocartilage - more rigid - intervertebral discs and pubic symphysis
elastic - found in ear and epiglottis
bone
support and protect body structure
cells (osteocytes) and matrix (lacunae)
spongy bone - ends of long bone, sternum, pelvis, vertebrae
compact bone - shaft long bone make up outer portions
blood
atypical - no support or connect
mostly RBC (erythrocytes), scattered WBC (leucocytes) and platelets
transport nutrients, waster and respiratory gases around body
