Download Zoo 103

Prepared by : Reem Aldossari
The connective tissues
Connective tissue is the most diverse of the
four tissue types with a wide variety of
Functions.
Functions of connective tissue:
Protection of organs
*Providing structural framework for the body
*Connection of body tissues
*connects epithelial tissues to the muscle tissues
*
The matrix consist of :
Protein fibers
White( Collagen) fibers
Yellow ( Elastic ) fibers
(occur in bundles)
(occur as a single and
branched).
* The matrix may be solid (as in bone), soft (as
in loose connective tissue), or liquid (as in
blood).
The fibres of areolar connective tissue :
Collagen (white) fibres :
•Occur in bundles and unbranched
•Elastic ( yellow) fibres :
•Occur single and branched
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I.Cartilage
Cartilage is studied as an example of skeletal
connective tissue.
*It has 4 main functions, these are:
•It forms the majority of the temporary skeleton in the
mammalian embryos until it is replaced by bone.
•In adults, it supports the structure of the nasal
septum, ear pinna, larynx, trachea and bronchi.
•It covers the articular surfaces of movable joints.
•It forms the epiphyseal plate.
The hyaline cartilage:
Trachea of the rabbit is studied as an example.
•It is called hyaline (hyalos = gloss) because of its
glossy, whitish blue appearance in the fresh state.
•The matrix is semi-solid and contains very delicate
collagen fibers. The refractive index of the matrix is
equivalent to that of its fibers, so it appears clear.
•It is the most common form of cartilage.
1-Matrix
2- Lacuna
3- Chondrocytes
) Hyaline Cartilage (
The vascular Tissues
Vascular tissues include blood and lymph
tissue only.
The matrix is liquid .
The blood of man :
Mature red blood cells (erythrocytes )round
and lacking nuclei
White blood cells( leucocytes) larger and
round nuclei
There are two types of white blood cells:
1-The granulocytes:
Are the cells that contain the cytoplasm where
the granules and take the nucleus where several
forms seem divided by the diffraction deep so is
also known as polymorphonulcear
There are three types of granulocytes:
1-neutrophilis
2-cosinophils or a cidophils
3- Basophilis
2 – Tagranulocytes or non granular
leucocytes :
That contain cytoplasm blisters is grainy and
characterized into two types:
1 - lymphocytes
2 – monocytes or marcocytes
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2
3
‫ب‬
Connective tissue (vascular tissue - blood
withdrawn -)
1-)b- cosinophils or a cidophils –a-neutrophilis(1-The granulocytes:
2-Lymphocytes
3-red blood cells