Connective Tissues Flashcards
What is the function of connective tissues
structure support nutrition defence storage and repair
Name the three categories of connective tissues
Fluid, connective tissue proper, supporting
Name and describe the 6 fixed cell types of connective tissues
Fibroblasts = produce ct fibes fibrocytes = maintain fibers Fixed macrophages= phagocytosis Adipocytes =store lipids reserve Mesenchymalcells = ct stem cells Melanocytes = synthesise melenin
What does a mast cell do?
Stimulates inflammatory response
What is the function of cartilage
Support, smooth sliding surface for joints, model , growth and intervebral cusioning
what do chondrocytes do?
they are cartilage
is bone or cartilage vascular
bone
name the two types of ossification
Intramembranous and endochondral
Namethe two types of bone growth
Longitudinal and appositional
List the steps of intramembranous bone growth
vascularization & mesenchymal proliferation
evolution of osteoprogenitor cells
evolution of osteoblasts
bone matrix laid down (osteoid)
osteocytes develop + mineralization
appositional growth on bone spicules
What does stresses do for bone?
strengthens it
What does parathyroid hormone do to bones
Increases osteoclast activity
What does calcitonin do for bones
Increases osteoblast activity
What does vitamin D do?
It is required for calcium absorbtion
What are the functions of bone?
Support.Protection, movement, hematopoiesis and ion storage