Step 1: Distinguish the four main types of tissue in the human body. Define tiss

Question

Step 1: Distinguish the four main types of tissue in the human body. Define tissue List four main types of tissue and examples of each. Step 2: Distinguish the different types of epithelia of the body. Devise an epithelial classification scheme based on the shape of a cell and the number of cell layers. List and describe the characteristics unique to epithelial tissue. Relate cell shape and number of layers to functions of epithelial tissue. List and describe three specific epithelial surface features, including detailed examples of each. Define gland, and explain why glands are included with epithelium Explain the difference between endocrine and exocrine glands, and include examples. Devise a simple classification scheme for glands based on cellularity, including duct structure and secretory unit structure. Refer to Figure 4.5 Describe the goblet cell and its important glandular role.

Explanation / Answer

There are mainly four types of tissue in human body-

1. Epithelial Tissue- Covers body surface and lines internal organ body cavity. There are four types of epithelial tissue namely Squamous, Columnar, Cuboidal, Transitional.

For example- surface epithelial, mucus lining, glandular cells

2. Connective tissues- General function of this tissue is to provide support to the body structure. Examples of connective tissue are blood, bone, cartilage, lymphatic,dense and loose connective tissue.

3. Muscular Tissue- there are three types of muscle tissue in our body namely smooth muscle, skeletal muscle and cardiac muscle.

4. Nervous tissue- these tissue and composed of nerve cells and glia. Nerve cells function as signal transmitter and glia cells work for protection of nerve cells. These are present in central nervous system and peripheral nervous system.

Classification of Epithelial tissues:-

1. Simple Epithelium:- a)simple squamous epithelial, b) simple cuboidal epithelial, c) non ciliated simple columnar epithelial, d) ciliated simple squamous epithelial cells

2. Stratified Epithelium:- a)stratified squamous epithelial, b) stratified cuboidal epithelial, c) stratified columnar epithelial, d) transitional epithelial.

3. Pseudo stratified columnar epithelial

Glandular epithelial cells:- endocrine gland and exocrine gland.

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