Introduction to Biotechnology
Animal tissues: Animal tissues are classified into four types based on the functions they perform: Epithelial, Connective, Muscular and Nervous tissue.
- Epithelial tissues –Tightly packed cells with almost no intercellular spaces. It forms the covering of the external surfaces, internal cavities, and organs of the animal body
- Various types of epithelial tissues:
- Squamous epithelium - Single layer of extremely thin and flat cells are called simple squamous epithelium while multi layered cells forms stratified squamous epithelium in order to prevent wear and tear
- Location in the human body:
- Simple squamous epithelium - Lining of the mouth, oesophagus, lung alveoli, etc.
- Stratified squamous epithelium – Skin
- Cuboidal epithelium - Consists of cube-like cells that provide mechanical support
- Location in the human body:Lining of kidney tubules and ducts of the salivary glands
- Columnar epithelium - Consists of elongated or column-like cells to facilitate movement across the epithelial barriers.
- Location in the human body: Inner lining of the intestine and gut
- Glandular epithelium - Consists of multicellular glands
Connective tissues -Specialised to connect various body organs. Various types of connective tissues are:
Loose connective tissue- It includes areolar and adipose connective tissues
- Areolar tissue - It provides supports to internal organs and helps in repair of tissues
- Found in the skin and muscles, around the blood vessels, nerves, etc.
- Adipose tissue - Acts as the storage site of fats; found between the internal organs an…
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