Tissues | Lecture 5 | Chapter 6 | CBSE Class 9 Science | CBSE | Free Education

Tissues | Lecture 5 | Chapter 6 | CBSE Class 9 Science | CBSE | Free Education CBSE Class 9 Science. Let's watch this amazing topic for your effective Board Exam - Science Preparation with proper explanation by your favorite teacher. ✴️✔️ Do 𝐒𝐔𝐁𝐒𝐂𝐑𝐈𝐁𝐄 to the channel for more updates and hit that like button! ❤️ (Turn on your notification 🔔 to get all updates before anyone!!) #tissues #Study #CBSEClass9Science #Class9 #freeeducation #class9preparation Summary of Animal Tissue Types Connective Tissue Structure: Contains a matrix, which is a chemical substance that may be solid, liquid, or gelatinous. It includes fibers and cells that can be closely packed or spread out. Types of Connective Tissue: Bone: Hard, inflexible matrix made of calcium and phosphate compounds. Provides body structure and facilitates muscle movement. Cartilage: Flexible, soft tissue found in ear lobes, nose, trachea, and between bones. Acts as a cushion to prevent rubbing between bones. Tendon: Connects bones to muscles; made of white fibers and less flexible. Ligament: Connects bones to bones; made of white and yellow fibers and is more flexible. Areolar Tissue: Consists of cells and fibers in a matrix; located between skin and muscles and around blood vessels and nerves. Binds different types of tissues while maintaining flexibility. Adipose Tissue: Stores fat below the skin and between internal organs. Provides cushioning, insulation, energy storage, and shapes body parts like limbs and breasts. Blood: A liquid connective tissue with a fluid matrix called plasma. Transports gases, digested food, waste materials, and hormones throughout the body. Lymph: A whitish fluid derived from blood, contains plasma, white blood cells, and platelets. Transports materials that blood cannot. Epithelial Tissue Definition: Covers and protects the body and its organs. Forms lining for mouth, blood vessels, and various organ cavities. Functions: Protection of organs. Separation of organs from one another. Selective permeability, allowing certain substances to pass through. Acts as glands in some cases to secrete substances. Characteristics: Cells are tightly packed with little or no intercellular space. Separated from other tissues by a fibrous basement membrane. Types of Epithelial Tissue: Based on cell shape: Squamous: Flat cells. Cuboidal: Cube-shaped cells. Columnar: Pillar-shaped cells. Based on layers: Simple: Single layer of cells. Stratified: Multiple layers of cells. Special types: Ciliated: Has hair-like cilia for moving mucus. Non-ciliated: Without cilia. Transitional: Contains cells of mixed shapes (flat to cuboidal) and helps in expansion and contraction. Pseudostratified: Appears to have multiple layers but actually has one. Locations Where Epithelial Tissues are Found Simple squamous: Lung alveoli, lining of blood vessels. Stratified squamous: Skin, lining of mouth, esophagus. Simple cuboidal: Kidney tubules. Stratified cuboidal: Salivary and sweat glands. Simple columnar (ciliated/non-ciliated): Intestines, respiratory tract. Stratified columnar: Male urethra. Transitional: Urinary bladder. Functions of Different Epithelial Types Simple squamous: Allows easy passage of substances. Stratified squamous: Provides protection against wear and tear. Cuboidal and columnar: Provide mechanical support, absorption, secretion. Ciliated columnar: Moves mucus. Transitional: Helps in expansion and contraction. Glandular epithelium: Secretes substances. 🔔 SUBSCRIBE and GET it FREE:    / @free-educations