1. Animal tissue
Heba Al-Tamimi 

2. the science deals with study of animal tissues.
Simply groups of similar cells that work together performing the same task
Histology:
the science deals with study of animal tissues.
Cell tissues organs system organism

3. Organs are composed of four basic tissue types:
Epithelial tissues
Connective tissues
Muscular tissues
Nervous tissue

4. Epithelial Tissues
There are different types of epithelia, but all share the following common features:
Have one free surface
Lack blood vessels
Have little intercellular spaces
And attach to a basement membrane

5. Epithelial Tissue
Epithelial tissues either cover body surface (as skin) or line tubular organs (as intestine )
These tissues serve one or more of the following functions
Protection
Secretion
Absorption
Sensation
reproduction

6. Epithelial Tissues

7. Simple Squamous Epithelium
Squamous Cells
Simple Cuboidal Epithelium
Alveoli in lung
check
Cuboid Cells
Kidney tubules
Thyroid follicles

8. Connective tissues (C.T)
General C.T
Loose C.T
(Areolar)
Dense C.T
adipose
Special C.T
Blood
Cartilage
(hyaline)
Bone
(compact)

9. Connective Tissue
Characterized by the cells widely separated from each other in a matrix that is produced by the cells.
This tissue consist from
Cell Matrix (Ground)
Liquid (sol), Gel, Gum or solid
Fibers
Collagen (white fiber) wavy appearance ,bundle shape
Elastic yellow fibers) triad like ,branch
Cell :depends on the type of connective tissue

10. Loose Connective Tissue (Areolar)
Gel like matrix with both elastic and collagen fibers running though the ground substance in many directions.
Cells : fibrocytes
Location : mesentery
Mesentary: A fold of the peritoneum that attaches the stomach and other organs to the posterior wall of the abdomen

11. Dense Regular Connective Tissue
Tightly packed collagen fibers
Matrix : gel-like
Cells :fibrocytes
Location : tendon
Fibrocyte nucleus
Collagen

12. Adipose Tissue Function as storage cells for lipids
Adipose cells contain a large vacuole which in the living cell contains lipids.
Cell nucleus and cytoplasm are pushed out to edge of cell membrane.(peripheral)

13. Blood Liquid matrix = plasma Cell : No fiber Erythrocytes Lymphocyte
Platelets (small cytoplasmic fragment)
No fiber
Erythrocyte
Monocyte
Neutrophil
Lymphocyte

14. Cartilage (hyaline) matrix is semisolid.
Cells (Chondrocytes) are found in Lacunae within the matrix.
NO Fiber
Chondrocyte
Matrix

15. Bone (compact )
matrix is Solid due to deposition of Calcium- phosphate salt called hydroxyapatite.
Has blood supply and nerves running through the Haversian canal systems to cells (osteocytes) found inside lacunae .

16. Muscle Tissue Skeletal Muscle (Striated, voluntary)
Parallel elongated cells (Muscle fibers)
multinucleated and each cell is the length of the muscle.

17. Nervous tissue
Nervous tissues are found in brain ,spinal cord ,nerves and reach all organs
The tissues consist of:
Neurons which are specialized in transmitting information
Neuroglia support neural tissue and help supply nutrients to neurons

18. Nervous tissue
A neuron consist of :-
Cell body
Axon
Dendrites

19. Nervous tissue

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