Tissue is composed of groups of similar cells that work together to perform a specialized function. There are four main types of animal tissue: epithelial, connective, muscle, and nervous tissue. Epithelial tissue covers surfaces and internal linings of structures throughout the body. It includes squamous, cuboidal, columnar, ciliated columnar, and stratified squamous cell types. Connective tissue binds and supports other tissues. It includes blood, bone, cartilage and adipose tissue. Muscle tissue contains contractile cells that allow movement. There are three main types: skeletal, cardiac and smooth muscle. Nervous tissue transmits signals through the body via neurons located in the brain, spinal cord and nerves.

1. Tissue
Tissue

2. Definition:
group of similar cell, size and shape specialized
to perform a similar job.

3. Simple and compound tissue:
– Simple tissue:
tissue which composed of only one type of cell.
– Compound tissue:
tissue which composed of two and more than two type of cells.

4. Types of tissue:
Animal tissue
Plant tissue

5. Animals tissue:
– Epithelial tissue
– Connective tissue
– Muscle tissue
– Nervous tissue

6. Epithelial Tissue:
– Squamous epithelial:
– Cuboidal epithelial:
– Columnar epithelial:
– Ciliated columnar:
– Stratified squamous:

8. Squamous epithelium:
– Single layer of flat cells.
– Location: Found in lungs, heart, blood vessel and glomeruli .
– Function: Allow movement of material across it.

9. Cuboidal epithelium:
– Single layer of cube shape cells.
– Location: Found in kidney tubes and small gland.
– Function: Make secretions.

10. Columnar epithelium:
– Has elongated cells
– Location: Found in alimentary canal and gall bladder.
– Function: Make secretions.

11. Ciliated columnar epithelium:
– Has elongated cells with cilia.
– Location: Present in trachea and bronchi.
– function: propel mucus.

12. Stratified squamous epithelium:
– Many layer of flat cells.
– Location: present in lining of oesophagus and mouth and over skin.
– Function: protects inner parts.

13. 2. Connective tissue:
– Function: connecting function, support and bind other tissues.
– Connective tissue has scattered cells.
– Example: blood, bone and cartilage (ends of bones, external ear, nose and
trachea)
– Adipose tissue: found around kidney, under skin and abdomen.
– Function: provide energy and support organs.

14. 3. Muscle tissue:
– Consist of bundle of long cell called muscle fibre.
– Most abundant animal tissue.
– Have ability to contract.
– Types:
I. Skeletal muscle.
II. Cardiac muscle.
III. Smooth muscle.

15. I. Skeletal muscles: (voluntary
muscle)– Striated muscle and contain many nuclei.
– Function: Responsible for movement of bones.

16. II. Smooth muscle: ( involuntary)
– Non-striated muscle each with single nucleus.
– Location: Present in wall of alimentary canal, urinary bladder, blood vessel.
– Function: Movement of substace.

17. III. Cardiac muscle:
(involuntary)– Striated and single nucleus in each cell.
– Location: Present in wall of heart.
– Function: Produce heartbeat

18. 4.Nervous tissues:
– Transmission of information in body.
– Form a communication system in boby.
– Composed of nerve cells or neuron.
– Conduct message in the form of nerve impulse.
– Location: brian, spinal cord and nerves.