Different types of human tissue. 4 Types of Human Body Tissue and Functions 2022-10-12
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Human tissue is the biological material that makes up the body of a human being. It is composed of cells, extracellular matrix, and various substances that help the cells to function properly. There are four main types of human tissue: epithelial, connective, muscular, and nervous tissue.
Epithelial tissue is found lining the surfaces of the body, including the skin, blood vessels, and internal organs. It is made up of tightly packed cells that form a protective barrier and help to regulate the exchange of substances between the body and the environment. Epithelial tissue is classified based on the number of cell layers and the shape of the cells. Simple epithelial tissue has a single layer of cells, while stratified epithelial tissue has multiple layers. The cells of epithelial tissue can be squamous, cuboidal, or columnar in shape.
Connective tissue is found throughout the body and provides support, protection, and connection between different body parts. It is made up of cells and an extracellular matrix that consists of fibers and ground substance. There are several types of connective tissue, including adipose (fat) tissue, cartilage, bone, and blood. Adipose tissue stores energy and helps to insulate the body. Cartilage is a flexible, elastic tissue that cushions joints and allows for movement. Bone is a hard, rigid tissue that provides support and protection for the body. Blood is a fluid connective tissue that carries oxygen, nutrients, and hormones to cells and removes waste products from the body.
Muscular tissue is responsible for movement and the generation of force. It is made up of cells called muscle fibers that can contract and relax. There are three types of muscle tissue: skeletal, cardiac, and smooth. Skeletal muscle is under voluntary control and is responsible for movement of the bones and other structures. Cardiac muscle is found in the heart and is responsible for pumping blood throughout the body. Smooth muscle is found in the walls of internal organs and helps to move substances through the body.
Nervous tissue is found in the brain, spinal cord, and nerves and is responsible for transmitting and processing information. It is made up of cells called neurons and glial cells. Neurons are responsible for transmitting signals through the body, while glial cells provide support and protection for the neurons.
In conclusion, there are four main types of human tissue: epithelial, connective, muscular, and nervous tissue. Each type of tissue has specific functions and is found in different parts of the body. Understanding the different types of tissue is important for understanding how the body functions and for diagnosing and treating various medical conditions.
Types of Tissues
Skeletal muscle fibers are multinucleated and attached to the skeleton. Muscle tissue Muscle tissue is both extensible and elastic. Keep reading to access the lesson transcript below. Due to its involvement in the digestive process, however, it remains non-keratinized, and secretes mucus to smoothen the passage of food. The next level of organisation is the organ, where several types of tissues come together to form a working unit. Tight junctions in cells are also known as occluding junctions because they prevent the flow of material through the interstitial space between two cells.
4 Types of Tissues in Human Body and its Functions
Collectively, organ systems work together to for a organism for function properly. Neurons propagate information via electrochemical impulses, called action potentials, which are biochemically linked to the release of chemical signals. These cells can be flat, cuboidal, or columnar. The cilia also sway back and forth to sweep the trapped particles upward toward the throat, from which they can be expelled from the body. Three serous membranes are found lining the thoracic cavity; two membranes that cover the lungs pleura and one membrane that covers the heart pericardium. Unfortunately, there are not enough tissues to go around, and the need for donated tissues keeps rising. Connective Tissue fills in the spaces inside our body with a matrix made of fibers within a liquid, solid, or jelly-like substance.
14 Types of Cells in Human Body & their Important Functions
Nervous tissues propagate information. Nervous tissue allows the body to receive signals and transmit information as electric impulses from one region of the body to another. Also refer to — Muscle Tissue They are involved in producing force and generating motion, either for the locomotion or for other body movements within internal organs. Each year, approximately 30,000 people donate tissues, which supply tissues for up to 1 million tissue transplants. Like electrical circuits, the nervous system transmits signals from nerves to the spinal cord and brain. It protects us from potential invaders like viruses and keeps our body from losing moisture. The lateral sides of the cells connect to other epithelial cells with cell junctions, allowing the tissue to be tightly connected and form a barrier for the organism.
. Clockwise from nervous tissue, LM × 872, LM × 282, LM × 460, LM × 800. This side of the tissue is specialized for secretion or absorption if that is part of the function of the organ. Muscle tissue contracts forcefully when excited, providing movement. There are four main human body tissues: Tissue Type Location Function Epithelial Skin, lining of hollow organs Protection, secretion, absorption Connective Blood, bone, fat, cartilage, extracellular matrix Bind tissues and organs together, protection Muscle Skeletal muscle, heart, inner layers of hollow organs Contraction and electrical excitability to create movement Nervous Brain, spinal cord, nerves Communication within the body What Is Body Tissue? Embryonic Origin of Tissues The zygote, or fertilised egg, is a single cell formed by the fusion of an egg and sperm. Both answers would be correct.
A fourth, the peritoneum, is the serous membrane in the abdominal cavity that covers abdominal organs and forms double sheets of mesenteries that suspend many of the digestive organs. They are arranged in parallel lines and are bundled, making muscle tissue very strong. Muscle and nervous tissues will be discussed only briefly in this chapter. All substances that enter the body must cross an epithelium. Classification Example Location Function Connective Proper Areolar Connective Tissue All over the body Packing material between other tissues and organs, protection Connective Proper Adipose Tissue or Body Fat All over the body Insulates the body, protection, thermoregulation Connective Proper Reticular Connective Tissue Lymph nodes, spleen, bone marrow Support and protection Connective Proper Dense Regular Connective Tissue Tendons, ligaments, fascia Supports and binds other tissue together Connective Proper Dense Irregular Tissue Skin dermis and joint capsules Regulates multidirectional stress and stretch Connective Proper Elastic Connective Tissue Arterial blood vessels, bronchiole tubes Regulates stretch Bone Compact bone tissue Outer bone Protects, offers structure and support Bone Trabecular bone tissue Inner bone Produces blood cells, allows bone to be lightweight Blood Blood Within blood vessels Specialized connective tissue that transports materials Cartilage Elastic Cartilage External ear, epiglottis Allows for flexible support Cartilage Hyaline Cartilage Embryonic skeleton, ribs, nose, trachea, larynx Shock absorption Cartilage Fibrocartilage Vertebral discs, knees Cushioning and withstanding pressure Muscle Tissue Muscle tissue is a body tissue derived from the mesoderm that facilitates contraction in the body. The small tunnels, canaliculi, connect osteocytes in the different layers of an osteon. It is a scanning electron micrograph of human epithelial cells that line the bronchial passages.
The Four Types of Tissues Epithelial tissue, also referred to as epithelium, refers to the sheets of cells that cover exterior surfaces of the body, lines internal cavities and passageways, and forms certain glands. Serous fluid secreted by the cells of the thin squamous mesothelium lubricates the membrane and reduces abrasion and friction between organs. Like electrical circuits, the nervous system transmits signals from nerves to the spinal cord and brain. Let us learn in detail about the types of tissues in different organs. Cells in the human body are of different types based on their structure and function. Unlike other cells, these cells do not multiply. These projections are referred to as Axons send impulses away from the soma and dendrites carry incoming information.
An organ is a structure made up of two or more tissues that work together to carry out a specific job. They help in the contraction and relaxation of man organs like lungs, stomach, uterus, etc. The most notable lateral surface structures are junctions. All of them are immune system cells involved in defending the body, but each subtype has a different function. The cells within a tissue share a common embryonic origin. These membranes line the coelomic cavities of the body, that is, those cavities that do not open to the outside, and they cover the organs located within those cavities.
Blood cells freely flow in the liquid blood. In addition to muscle tissue, we have connective, epithelial, and nervous tissue in the body. Embryonic origin of tissues and major organs. Of them, macrophages can eat gulp any foreign particle like bacteria in the body. Nuclei of skeletal muscle cells are peripheral and ovoid. Lesson Summary Human body tissue makes up organs and other body parts. The study of tissue is known as histology and study of disease-related to tissue is known as histopathology.
Skin cells are constantly dying and being shed from the body and replaced by new skin cells, and bone cells can divide to form new bone for growth or repair. Simple columnar epithelia are found in the female reproductive system and in the digestive tract. Serous membranes are identified according locations. These cells are meant to engulf viruses and other foreign particles and destroy them. Free surfaces of the body include the outer surface of internal organs, lining of body cavities, exterior surface of the body, tubes and ducts.
These cells constantly survey nervous tissue to destroy invaders and clear cell debris. One particular type is called pseudostratified because a single layer of cells having varying heights gives the appearance of being stratified. These mature cells in the lacunae are called chondrocytes. Connective tissue such as fat and other soft padding tissue, bone, and tendon. It has elastic fibers in its matrix and is found in the lungs, trachea, bronchi, and the walls of large blood vessels. She is also certified in secondary special education, biology, and physics in Massachusetts.
