ehab thebyan, mbbs, hs.peds connective tissue 2. copyright © 2010 pearson education, inc. table 4.1...
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Ehab Thebyan, MBBS, Hs.Peds
CONNECTIVE TISSUE 2
Copyright © 2010 Pearson Education, Inc.
Table 4.1 Comparison of Classes of Connective Tissues (1 of 2)
Copyright © 2010 Pearson Education, Inc.
Table 4.1 Comparison of Classes of Connective Tissues (2 of 2)
Copyright © 2010 Pearson Education, Inc.
Figure 4.8g Connective tissues.
(g )Cartilage: hyaline
Description: Amorphous but firmmatrix; collagen fibers form an
imperceptible network; chondroblastsproduce the matrix and when mature
(chondrocytes ) lie in lacunae.
Function: Supports and reinforces;has resilient cushioning properties;
resists compressive stress.
Location: Forms most of theembryonic skeleton; covers the endsof long bones in joint cavities; forms
costal cartilages of the ribs; cartilagesof the nose, trachea, and larynx.
Photomicrograph: Hyaline cartilage from thetrachea (750x).
Costalcartilages
Chondrocytein lacuna
Matrix
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Figure 4.8h Connective tissues.
(h )Cartilage: elastic
Description: Similar to hyalinecartilage, but more elastic fibers
in matrix.
Function: Maintains the shapeof a structure while allowing
great flexibility.
Location: Supports the externalear (pinna); epiglottis.
Photomicrograph: Elastic cartilage fromthe human ear pinna; forms the flexible
skeleton of the ear (800x).
Chondrocytein lacuna
Matrix
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Figure 4.8i Connective tissues.
(i )Cartilage: fibrocartilage
Description: Matrix similar tobut less firm than that in hyaline
cartilage; thick collagen fiberspredominate.
Function: Tensile strengthwith the ability to absorb
compressive shock.
Location: Intervertebral discs;pubic symphysis; discs of knee
joint.
Photomicrograph: Fibrocartilage of anintervertebral disc (125x). Special staining
produced the blue color seen.
Intervertebraldiscs
Chondrocytesin lacunae
Collagenfiber
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Figure 4.8j Connective tissues.
(j )Others: bone (osseous tissue)
Description: Hard, calcifiedmatrix containing many collagen
fibers; osteocytes lie in lacunae.Very well vascularized.
Function: Bone supports andprotects (by enclosing);
provides levers for the musclesto act on; stores calcium and
other minerals and fat; marrowinside bones is the site for blood
cell formation (hematopoiesis).
Location: Bones
Photomicrograph: Cross-sectional viewof bone (125x).
Lacunae
Lamella
Centralcanal
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Figure 4.8k Connective tissues.
(k )Others: blood
Description: Red and whiteblood cells in a fluid matrix
(plasma.)
Function: Transport ofrespiratory gases, nutrients,
wastes, and other substances.
Location: Contained withinblood vessels.
Photomicrograph: Smear of human blood (1860x); twowhite blood cells (neutrophil in upper left and lymphocyte
in lower right) are seen surrounded by red blood cells.
Neutrophil
Red bloodcells
Lymphocyte
Plasma
Given the previous outline and examples
Can you name?First, the tissue type
Second, where in the body the tissue is found
What kind of tissue does this represent?
Where in the body can you find this tissue?
delicate thin layers between tissues; present in all mucous
membranes
Loose (areolar) connective tissue
What kind of tissue does this represent?
Where in the body can you find this tissue?
Adipose tissue
fat
What kind of tissue does this represent?
Where in the body can you find this tissue?
Dense connective tissue
tendons; ligaments
What kind of tissue does this represent?
Where in the body can you find this tissue?
Hyaline cartilage
nose; ends of long bones; ribs
What kind of tissue does this represent?
Where in the body can you find this tissue?
Elastic cartilage
outer ear; epiglottis
What kind of tissue does this represent?
Where in the body can you find this tissue?
Fibrocartilage
between vertebrae; knee joints; pubic joint
What kind of tissue does this represent?
Where in the body can you find this tissue?
Bone
skeletal system
What kind of tissue does this represent?
Where in the body can you find this tissue?
Blood
bloodstream