Biology - Animal Tissue

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Introduction

• The tissue found in animals have comparatively some different properties than the plant tissue.

Types of Animal Tissue

• Animal Tissues are divided as −

  • Epithelial Tissue

  • Connective Tissue

  • Muscular Tissue

  • Nervous Tissue

• Let’s discuss them in brief −

Epithelial Tissue

• Epithelial tissues are the covering and protective tissues in the animal body.

• Epithelial tissue covers almost all organs and cavities within the body.

• Epithelial tissue also forms a barrier to keep different body systems separate.

• Epithelial tissue cells are closely packed (as shown in the image given above) and form a continuous layer.

Connective Tissue

• Connective tissues are made up of the cells those are separated by non-living material, and known as an extracellular matrix.

• This matrix could be either liquid or rigid.

• Connective tissues are further divided as −

  • Fibrous connective tissue

  • Skeletal connective tissue and

  • Fluid connective tissue

• Tendons are the example of fibrous connective tissue.

• Bone is an example of a skeletal connective tissue.

• Bone forms the framework and provide supports to the body.

• Blood is an example of fluid connective tissue.

• Blood has a fluid (liquid) matrix known as plasma.

• In plasma, the red blood cells (RBCs), the white blood cells (WBCs), and the platelets are remaining suspended.

Muscular Tissue

• Muscular tissue largely consists of elongated cells, and also known as muscle fibers.

• The muscular tissue is accountable for the movements in our body.

• The muscular tissue contains special proteins known as contractile proteins; and this protein helps in contraction and relaxation and supports free movement.

Nervous Tissue

• The brain, spinal cord, and nerves all are composed of the nervous tissue.

• Cells of the nervous tissue are extremely particular and sensitive for being stimulated and then transmitting the stimulus swiftly from one place to another within the body.

• The cells of nervous tissue are known as nerve cells or neurons.

• Nerve impulses allow us to move our muscles whenever we want to do so.