TISSUE REVIEW - connective tissues · procedure to identify connective tissues •if it’s...
Transcript of TISSUE REVIEW - connective tissues · procedure to identify connective tissues •if it’s...
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 cartilage
• smooth matrix hyaline cartilage
• dark lines in matrix elastic cartilage
• cells in rows fibrocartilage
– osteons compact bone
– blood cells blood
areolar c.t.
mast cell fibroblast
fibroblast Mast cell
areolar ct
high power
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
This is not
an empty
space. The
entire
cytoplasm
is filled
with
fats/lipids
Nucleus
Capillary Adipocyte
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.
Fibroblast
nuclei
Dense fibrous irregular
connective tissue
Collagen
fibers
not in a parallel
arrangement
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
Perichondrium
Chondrocyte in lacuna Elastic fibers
Elastic cartilage = cartilage with extra elastin fibers
in the matrix. Elastin appears very dark.
Collagen fibers Fibrocartilage
Chondrocytes in a lacunae
Fibrocartilage = cartilage with extra collagen fibers in the matrix. The
chondrocytes appear in striaight rows.
We are built with several tissues in the same organ, area:
dense irregular c.t. adipose c.t. gland