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Chapter 6 – Tissues

The following Topics and Sub-Topics are covered in this chapter and are available on MSVgo:

Introduction

The tissue is a cellular organizational level of biology that exists within organs and organ systems. A tissue is a set of cells and extracellular matrix from the same background that work together to perform a particular task. Below are the different forms of tissues: 

  • Animal Tissues
  • Plant Tissues

Tissues are a collection of cells of a common arrangement that work together to perform a particular task. The term tissue is derived from an ancient French verb that means “to weave.” Animal tissues are divided into four categories: connective, muscular, nervous and epithelial. There are three categories of tissues in plants: epidermal, ground and vascular. Organs in the body, such as the brain and heart, are made up of groups of tissues.

1. Connective Tissue And Its Types

Connective tissue is a kind of tissue that binds or divides groups of other tissues. It is located between all of the body’s other tissues and organs. Ground material, a gel that coats cells, makes up connective tissue. But for lymph and blood, most connective tissue includes fibres, which are large, slender proteins. Collagenous fibres attach bones to tissues; elastic fibres enable organs like the lungs to move, and reticular fibres provide cells physical support. Oxygen may also diffuse from blood vessels into cells via connective tissue.

2. Muscular Tissue And Its Types

Muscles in the body are made up of muscular tissue, and the specialized nature of the tissue causes muscles to contract. Skeletal muscle, heart muscle, and smooth muscle are the three kinds of muscle tissue. Skeletal muscle helps the body to move by anchoring tendons to bones. The heart contains cardiac muscle, which contracts to pump blood. Smooth muscle can be located in the intestines, where it aids in the movement of food across the digestive tract and other organs such as blood vessels, the uterus, and the bladder. Skeletal and cardiac muscles are striated, which ensures they have sarcomeres (muscle tissue units) that are organized in a regular sequence. Sarcomeres do not exist in smooth muscle.

3. Epithelial Tissue And Its Types

The epithelium, or epithelial tissue, protects the surfaces of organs such as the scalp, the trachea, the reproductive system, and the inner lining of the digestive tract. It helps defend organs by forming a membrane and absorbing water and nutrients, eliminating waste, and secreting enzymes or hormones. Many of the glands in the body are made up of epithelial ingrowths. Eczema and psoriasis, which induce rashes, are examples of epithelial tissue diseases. Carcinoma is cancer that arises from epithelial tissue. Asthma, which is marked by irritation of the airways and shortness of breath, is often caused by epithelial cells in the airways.

4. Nervous Tissues

Nervous tissues are responsible for communication and composes of the brain, spinal cord, and peripheral nerves. The tissue consists of two major cell types: neurons and glial cells.

  • Meristematic Tissues

They are a form of young cells that comprise continually dividing cells and aids in the growth of the plant’s length and width. Meristematic tissues are divided into different categories based on their locations, roles, division planes, roots, and growth. 

  • Apical Meristem.
  • Lateral Meristem.
  • Intercalary Meristem.

 

  • Permanent Tissues

A set of cells of identical origins, structures, and functions. During the ineffectiveness of meristematic action, they are engaged in full growth and distinction. Permanent tissues are divided into three categories: 

  • Simple Permanent Tissues.
  • Complex Permanent Tissues.
  • Special or Secretory Tissues.

 

  • Vascular Tissues

Plants use vascular tissues to move fluids from one section of the plant to another. Xylem and phloem are the two kinds of vascular tissue. Phloem transports organic compounds that the plant uses as fuel, especially sucrose, while xylem transports water and some soluble nutrients. Long and thin vascular tissues shape tubes that transfer nutrients like pipes. Two forms of meristems, which are tissues that comprise undifferentiated cells that are used during a plant’s development, are often involved with vascular tissue. The cork cambium and the vascular cambium are meristems that surround vascular tissue. The development of the plant’s vascular tissues is linked to these meristems. 

 

  • Ground Tissues

Both cells that aren’t vascular or dermal makeup ground tissue. Ground tissue is divided into three types: parenchyma, collenchyma, and sclerenchyma. Plants’ parenchyma cells have various roles, including photosynthesis, preservation of starch, fats, oils, proteins, water, and damaged tissue restoration. The plant’s structural strength is provided by collenchyma tissue, which is made up of long cells with irregularly thick walls. Plants that flourish in windy environments have thicker collenchyma tissue walls. Sclerenchyma is a kind of supportive tissue made up of dead cells. Fibres and sclereids are two kinds of sclerenchyma. Sclereids are star-shaped cells with thick cell walls, while fibres are long, slender cells. Fabrics made from Sclerenchyma fibres include hemp and flax.

In this chapter, we answered the question “Are Plants And Animals Made Of Same Types Of Tissues”. We learned about animal and plant tissues and their types.

  • What is tissue in the body? 

The tissue is a set of cells with identical structures that work together as a team.

  • What are the types of tissues? 

Connective tissue, epithelial tissue, muscle tissue, and nervous tissue are the four basic forms of tissue.

  • What are the four types of tissues? 

Epithelial, connective, muscular, and nervous tissue are the four major types of tissue in the body.

  • What is the main function of nerve tissue? 

It is in charge of organizing and regulating several bodily functions. It activates muscle contraction, raises environmental consciousness, and is involved in emotions, memory, and reasoning.

  • Why are tissues important to the human body?

Tissue is a collection of cells or fluid that act together to serve a certain function in the body, such as cells in an organ like the kidney or heart that transport oxygen and waste materials to and from the body’s cells.

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High School Physics

  • Alternating Current
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High School Chemistry

  • Acids, Bases and Salts
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High School Biology

  • Absorption and Movement of Water in Plants
  • Adolescent Issues
  • Anatomy of Flowering Plants
  • Animal Kingdom
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High School Math

  • Algebra – Arithmatic Progressions
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Middle School Science

  • Acids, Bases And Salts
  • Air and Its Constituents
  • Basic Biology
  • Body Movements
  • Carbon and Its Compounds
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  • Changes Around Us
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  • Water: A Precious Resource
  • Weather, Climate And Adaptations Of Animals To Climate
  • Winds, Storms And Cyclones

Middle School Math

  • Addition
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  • Boxes and Sketches
  • Data Handling
  • Fun With Numbers
  • Heavy and Light
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  • Long And Short
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  • Smart Charts
  • Squares
  • Subtraction
  • Tables And Shares
  • Tenths and Hundredths
  • Time
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