Reticular tissue is a specific form of connective tissue predominating in several regions with high cellular content. Fibroblasts, known as reticular vegas casino app cells, are the cells that produce reticular fibres. Scleroderma- It is characterised by thickening and hardening of the connective tissue. The immune system of the body starts attacking its own tissues.
- (b) Collenchymatous tissues are irregularly thickened at corners
- (a) The nature of matrix differs according to the function of the tissue
- (b) Smooth muscles contract and pull the tendons to move the bones
- A group of cells along with intercellular substances that perform a specific function is called tissue.
(b) Smooth muscles contract and pull the tendons to move the bones (a) Smooth muscles contract and pull the ligament to move the bones The columnar epithelium is pillar-like cells which have nuclei towards their base.
Are there adipocytes in areolar tissue?
- Areolar connective tissue is found between the skin and muscles, around blood vessels and nerves and in the bone marrow.
- Differentiation is a process by which the cells divide meristematically to take a permanent shape, size and function
- The muscular tissue which functions throughout the life continuously without fatigue is
- Cork cells contain tannins and chloroplasts.
(iii) xylem parenchyma- xylem parenchyma. Vessel elements are found in flowering plants Cork protects the plants from infection and mechanical injury. Walls of cork cells are thickened with suberin which is fat. Cork cells are compactly arranged dead cells and they lack intercellular spaces.
Specialised Connective Tissue
Animals of colder regions and fishes of cold water have thicker layer of subcutaneous fat. Sieve tubes are present in phloem hence they have no role in conduction of water (d) Cells of striated muscles are multinucleate and unbranched Answer is (b) conducting tissue
(a) Epithelial tissue is protective tissue in animal body. Xylem comprises tracheids, vessels, xylem parenchyma and xylem fibres. Because of a process called transpiration, the water is released from the plants in the form of vapours. (b) Filling of space inside the organs – (iv) Areolar tissue Xylem fibres provide structural rigidity and they have no role in conduction of water.
Areolar tissue located between the skin and muscles, around blood vessels and nerves and in the bone marrow. Areolar tissues are found around muscles, nerves and blood vessels hence they are not connected with bone dislocation. White adipose connective tissue, on the other hand, is involved in storage of triglycerides, maintaining metabolic homeostasis, and endocrine functioning. The loose connective tissue also contains fat cells called adipocytes in normal amounts. The ground substance is present in large amounts and gives an impression of an open space, for this reason, the loose connective tissue is also known as areolar tissue.
Tendons are fibrous tissues which are highly elastic and strong. Meristematic tissues are classified as apical, lateral and intercalary based on their location. Answer is (d) Skeletal muscles contract and pull the tendon to move the bones (d) Skeletal muscles contract and pull the tendon to move the bones (c) Skeletal muscles contract and pull the ligament to move the bones
This type of tissue is present in the dermis of the skin. White adipose tissues protect kidneys and are also found at the back of the eye, in the hump of camels, blubber of whales, etc. A group of cells along with intercellular substances that perform a specific function is called tissue. (c) Parenchyma and collenchyma are two simple permanent tissues, whereas xylem and phloem are two complex permanent tissues. The basic differences between meristematic and permanent tissues of plants are tabulated below
Functions of the Areolar Connective Tissue
(e) ———gives flexibility in plants. (c) Cells of cork contain a chemical called——— (d) Husk of coconut is made of ———tissue. (b) ———have guard cells. Fill in the blanks (a) ———are forms of complex tissue. Epidermal tissue forms a continuous layer which helps to avoid mechanical stress.
Epithelial tissues Living tissues which have an elongated shape and thick cell wall in the corner. These are dead tissues which have thick cell wall due to deposition of lignin.
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Reticular fibres support the early extracellular matrix during the formation of scar tissue, the healing of wounds, and general development. They form the initial structure of every tissue they are a part of, demonstrating their essential support function. Due to the distribution of reticular fibres, it exhibits a branching, and mesh-like appearance frequently referred to as reticulum (reticulin). It may be localised, only affecting a part of the skin or systemic, impacting vital organs. The systemic lupus erythematosus (SLE) – It is an inflammatory disorder of the skin and internal organs.
While doing work and running, you move your organs like hands, legs etc. Break of skeletal muscle cannot be the reason for bone dislocation as bones are joined by ligaments. Dislocation of bones occurs when joints held by ligaments get separated.
Difference between Areolar Tissue and Adipose Tissue
Meristematic tissues are dividing tissue. Answer is (c) Apical and intercalary meristems are permanent tissues (c) Apical and intercalary meristems are permanent tissues (b) Collenchymatous tissues are irregularly thickened at corners
A loose connective tissue is made up of loosely packed elastin and collagen fibres that are suspended in a matrix. Areolar connective tissue is a loosely arranged connective tissue that is widely distributed in the body and contains collagen fibers, reticular fibers, and a few elastic fibers embedded in a thin, almost fluid-like ground substance. Areolar connective tissue is a type of dense, irregular connective tissue found in the human body. The important function of this type of tissue is that it provides nutrition to the cells and also acts as a cushion to protect the organs from various external forces. In this article, we shall explore the definition, function and structure of areolar connective tissue.
Important topics of NCERT Exemplar for Class 9 Science Chapter 6 Tissues
It consists mainly of a network of fibres and cells which are held together by a gel-like matrix. As we grow older, this tissue starts to shrink and gets stiffer which in turn causes problems like back pain, skin sagging etc. This can cause overly flexible joints (which can potentially dislocate joints easily), tendons and ligaments to stretch too much, skin to be extraordinarily stretchy but fragile, and blood vessels easily form blood clots. Connective tissue has two subclasses, namely loose and dense tissues. Select the correct answer and click on the “Finish” buttonCheck your score and answers at the end of the quiz The disease is characterised by a very thin and long body.
Specific series subs:
Plasma contains proteins, water, hormones, salts, etc. to transport to different parts of the body. The blood contains red blood cells (RBCs), white blood cells (WBCs) and platelets. The yellow marrow contains fat, whereas red marrow produces blood cells.
Other forms of connective tissue also contain trace amounts of reticular fibres. The word “reticular connective tissue” refers to the fibres that make up the majority of the tissue structure. In the dense connective tissue, fibroblast cells and fibres are compactly packed. They form the subcutaneous layer under the skin along with adipose tissues, attaching muscles and other structures to the skin.
Since they are arranged in a pattern of layers, the epithelium is called stratified squamous epithelium. The oesophagus and the lining of the mouth are also covered with squamous epithelium. This is called the simple squamous epithelium. Epithelial tissue has only a small amount of cementing material between them and almost no intercellular spaces. It also forms a barrier to keep different body systems separate.
They are rich in collagen fibres and calcium, which give strength. Chondrocytes lie in the cavities known as lacunae, in a group of 2-4 cells or singly. They secrete collagen fibres also, which provide additional strength. The cartilage consists of chondrocytes cells, which are enclosed in a hard, rubbery matrix, secreted by them. In humans, cartilage is present between the bones of the vertebral column, in the external ear, nose and hands.
(a) The nature of matrix differs according to the function of the tissue Cork cells are made impervious to water and gases by the presence of They are usually loosely arranged, thus large spaces between cells (intercellular spaces) are found in this tissue. The tissue that helps in the sideways conduction of water in the branches is In desert plants, the rate of water loss gets reduced due to the presence of
