TISSUE REVIEW - connective tissues

TISSUE REVIEW - connective tissues
• The following slides are from your text or other sources.
This will allow you to study tissues at home.
• You are also responsible for tissue slides that we view with
the microscope in class.
• Also study the tissue slides and pictures found in the PAL
CD or at www.masteringaandp.com
• know:
– name of the tissue
– the cells ; the matrix ; other structures
– the function of the tissue
– where it is found
procedure to identify connective tissues
• if it’s connective :
• is the matrix loose or dense arrangement of fibers?
– loose
probably areolar
– loose, with many cells
reticular
– large cells with nucleus at edge adipose
– under epithelial tissue
areolar
– dense, parallel fibers
dense regular (fibrous)
– dense, dark, parallel
“
(elastic)
– dense, not parallel
dense irregular c.t.
• what are the cells called?
• what function matches this structure?
• other connective tissues:
– chondrocytes in lacuna
• smooth matrix
• dark lines in matrix
• cells in rows
– osteons
– blood cells
cartilage
hyaline cartilage
elastic cartilage
fibrocartilage
compact bone
blood
areolar c.t.
mast cell
fibroblast
areolar ct
high power
fibroblast
Mast cell
areolar c.t.
elastic fibers
collagen fiber
areolar c.t.
mast cell
ground substance occupies the space between cells, fibers
If it’s under epithelia, it’s probably areolar c.t.
in low power, areolar looks like this.
Adipose connective tissue
Capillary
Adipocyte
This is not
an empty
space. The
entire
cytoplasm
is filled
with
fats/lipids
Nucleus
adipose
under the skin
reticular c.t.
dark fibers + many cells
dense regular c.t.;
found where?
elastic c.t.
elastin fibers always stain dark
Dense fibrous irregular c.t.
Collagen
fibers
not in a parallel
arrangement
Fibroblast
nuclei
Dense fibrous irregular
connective tissue
hyaline cartilage
chondrocytes in lacuna
hyaline cartilage
if you see Chondrocytes in lacuna – it’s cartilage ;
if the matrix is smooth – it’s hyaline cartilage
hyaline cartilage
elastic cartilage
dark lines in the matrix
= elastin
Elastic Cartilage
Elastic cartilage = cartilage with extra elastin fibers
in the matrix. Elastin appears very dark.
Chondrocyte in lacuna
Elastic fibers
Perichondrium
Fibrocartilage = cartilage with extra collagen fibers in the matrix. The
chondrocytes appear in striaight rows.
Collagen fibers
Fibrocartilage
Chondrocytes in a lacunae
We are built with several tissues in the same organ, area:
dense irregular c.t.
adipose c.t.
gland