Histology Flashcards
Secrete the molecules that form the matrix (fibers and ground substance)
Fibroblasts
Engulf bacteria and cellular debris.
Macrophage (white blood cell)
Resides in connective tissue
Part of he immune system: secrete antibodies
Plasma cells
Fat cells which store triglycerides
Adipocytes
found along blood vessels in the connective tissue
Involved in the inflammatory response: produce histamine
Mast cells
Scarce under normal conditions
Migrate to connective tissue to combat pathogens
Neutrophils
Consists of fibres embedded in ground substance
Matrix
Part of connective tissue between the fibres and cells
Holds water within the tissues
Ground substance
long polysaccharide (repeating disaccharide unit)
Slippery substance that binds cells together, lubricates joints, maintain eyeball shape
Hyaluronic acid
Dermatan/keratan sulfate
Proteoglycans
28 different types with type I ______ being most common
Collagen fibres
Can withstand stretch of 150% of resting length
smaller diameter than collagen fibres
elastic fibres
A genetic disorder of fault elastic fibre production, so tissues high in elastic fibre are weak
Marfan’s syndrome
smaller than collagen bundles
consists of a single collagen molecule (type IV collagen)
*form the stroma (framework) of many soft organs
reticular fibres
Contains a large number of apidocytes
2 kinds: white/brown fat
adipose tissue
Forms part of the basement membrane, and the stroma (framework) of many organs i.e liver spleen, lymph
reticular connective tissue
Collagen fibres that are regularly arranged in bundles
strong against pulling 1 direction
found in tendons, ligaments
Dense regular connective tissue
Contains collagen fibres w no regular arrangement
found in places where forces are exerted in multiple directions. i.e skin, fascia
Dense irregular connective tissue
Contains mostly freeing branching elastic fibres
found in lungs, aorta
Elastic connective tissue
mature cartilage cells
chondrocytes
“gristle”
hyaline cartilage
strongest of 3 types of cartilage
contains bundles of collagen fibres
fibrocartilage
chondrocytes are scattered throughout a network of threadlike elastic fibres
elastic cartilage
