Connective Tissue and its Types || Animal Tissues (Part 3) || in Hindi for Class 9

In this Science (Biology) video in Hindi for class 9th we explained the functions and working of connective tissue and its types. This is a topic of Chapter 6 of science from NCERT.

Animal tissues can broadly be categorized into four types, viz., epithelial tissue, connective tissue, muscular tissue and nervous tissue.

𝑪𝒐𝒏𝒏𝒆𝒄𝒕𝒊𝒗𝒆 𝑻𝒊𝒔𝒔𝒖𝒆 − This tissue maintains the form of the body as well as its organs and provides internal support. e.g., bone, ligament, tendon, cartilage, blood, adipose tissue, areolar tissue.

Connective tissues consist of three main components - fibers (elastic and collagenous fibers), ground substance and cells.

Elastic fibers are bundles of proteins (elastin). Collagen consists of amino acids bound in a triple helix.
Ground substance is the substance in the extracellular space that contains all components of the extracellular matrix (ECM) except for fibrous materials.

Connective tissues is broadly categorized into two types, viz., connective tissue proper and special connective tissue.

Connective tissue proper is broadly categorized into two types, viz., loose connective tissue and dense connective tissue.

Loose connective tissue has less fibres in comparison to the ground substance and dense connective tissue has more fibres in comparison to the ground substance.

Two important types of loose connective tissue are areolar tissue and adipose tissue.

Areolar tissue is found between the skin and muscles, around blood vessels and nerves and in the bone marrow. It is strong enough to bind different tissue types together, yet soft enough to provide flexibility and cushioning.

Adipose tissue is fat storing tissue found below the skin and between internal organs.

Dense connective tissue is broadly categorized into two types, viz., dense regular connective tissue and dense irregular connective tissue.

In dense regular connective tissue fibers arranged in an orderly parallel fashion, giving it tensile strength in one direction. e.g., ligaments and tendons.

Ligaments are very elastic and have considerable strength, whereas, tendons have great strength and limited flexibility.

In dense irregular connective tissue fibers arranged in all directions, giving it tensile strength in all direction. This type of connective tissue is found mostly in the deep layer of the dermis. It makes the skin resistant to tearing by stretching forces from different directions.

Special connective tissue has several types, but in this video we included only three - bones, cartilage and blood.

Bone cells are embedded in a hard matrix that is composed of calcium and phosphorus compounds.
Cartilage smoothens bone surfaces at joints and is also present in the ear, nose, trachea and larynx. Cartilage has widely spaced cells. The solid matrix of cartilage is composed of proteins and sugars.

Blood has a liquid matrix called plasma, in which red blood corpuscles (RBCs), white blood corpuscles (WBCs) and platelets are suspended. The plasma contains proteins, salts and hormones. But, not all authorities include blood as connective tissue because they lack the fiber component.

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🔴 Click here to watch the whole playlist on Chapter 6 : 'Tissues' for Class 9 :
   • Tissues || in Hindi for Class 9  

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Previous videos -

🔴 Tissues (Introduction)
   • Tissues || in Hindi for Class 9  

🔴 Meristematic Tissue
   • Meristematic Tissue || Plant Tissues (Part...  

🔴 Simple Permanent Tissue
   • Simple Permanent Tissue || Plant Tissues (...  

🔴 Epidermis
   • Epidermis || Plant Tissues (Part 3) || in ...  

🔴 Complex Permanent Tissue
   • Complex Permanent Tissue || Plant Tissues ...  

🔴 Animal Tissues (Introduction)
   • Animal Tissues (Introduction) || Animal Ti...  

🔴 Epithelial Tissue and its Types
   • Epithelial Tissue and its Types || Animal ...  

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