TISSUES.pptx

TISSUES BY ANDREA MC LEAN At the end of this session, students will be able to : 1. Describe the four basic types of tissue 2. Explain the functions of each type of tissue 3. Identify the part of the body where the tissue can be found A tissue is made up of a group of related cells and the spac...

TISSUES BY ANDREA MC LEAN At the end of this session, students will be able to : 1. Describe the four basic types of tissue 2. Explain the functions of each type of tissue 3. Identify the part of the body where the tissue can be found A tissue is made up of a group of related cells and the space between them. These cells work together to do a specific task. Tissues are just one level in the system or order of living things' formation and growth. What is a Tissue ? 9/3/20XX Presentation Title 3 The smallest block in the hierarchy is the cell. Tissues are made up of groups of similar cells. Organs are made up of groups of different tissues. Organ systems are made up of groups of organs. Cells, tissues, organs, and organ systems all work together to make a multicellular organism. All of these stages work together to help the body stay in balance. What is a Tissue ? 9/3/20XX Presentation Title 4 Based on what they do most of the time, tissues can be put into four basic groups: epithelial tissue, connective tissue, nerve tissue, and muscle tissue. Types of Tissues 9/3/20XX Presentation Title 5 Epithelial Tissues 9/3/20XX Epithelial tissues, which are also called epithelium, cover and line the areas inside and outside of the body. In epithelial tissues, the cells are usually close to each other and there isn't much space between them. The epithelium is often a barrier that protects the parts it covers. It covers the inside of the blood vessels and hollow organs like the stomach and kidneys. The tissue that makes up the top layer of skin is a special kind of epithelium. Presentation Title 6 9/3/20XX Presentation Title 7 Connective Tissues 9/3/20XX Connective tissues protect, support, and connect its parts. There are four main types of connective tissue: blood, cartilage, bone, and connective tissue itself. Organs, bones, and muscles are held together by connective tissue, which covers and cushions them. Tendons and ligaments are both types of connective tissue, but they are more specific. Presentation Title 8 Connective tissues protect, support, and connect its parts. There are four main types of connective tissue: blood, cartilage, bone, and connective tissue itself. Organs, bones, and muscles are held together by connective tissue, which covers and cushions them. Tendons and ligaments are both types of connective tissue, but they are more specific. Cartilage is a kind of connective tissue that is firm but also a little bit rubbery. It is found in the joints and other parts of the skeleton, like the ears and nose. 9/3/20XX Presentation Title 9 Connectiv e Tissues 9/3/20XX Because hard salt crystals are found in the structure of bone, it is the most rigid of the connective tissues. In contrast to cartilage, bone has a lot of blood vessels and nerves. Even though blood is a liquid, it is called a connective tissue because it is made up of similar cells that each have a specific job. Plasma is a liquid that holds these cells in place. Presentation Title 10 9/3/20XX Presentation Title 11 Nerve Tissue 9/3/20XX Nerve tissue works to get information from and send it to other parts of the body. Nerve cells work by sending electrical signals along fibers that carry information between the brain and other parts of the body. Neurons and glial cells are the two types of cells that make up nerve tissue. Presentation Title 12 Nerve Tissue 9/3/20XX The neuron is the most important cell in nerve tissue. A standard neuron has a cell body with a nucleus, at least one dendrite, and one axon, which are long fibers. Dendrites send impulses to the cell body, and axons send impulses away from the cell body. Nerves are made up of bundles of fibers from neurons that are joined together by connective tissue. Presentation Title 13 9/3/20XX Presentation Title 14 Muscle Tissues 9/3/20XX There are three types of muscle tissue: striated muscle, which moves the skeleton and is under conscious control; smooth muscle, which is found in the walls of hollow organs, blood vessels, airways, and the diaphragm; and cardiac muscle, which is only found in the heart. 15 Muscle Tissues 9/3/20XX Smooth muscle and heart muscle cannot be managed by the person. The autonomic nervous system is in charge of smooth muscle movements. The sinoatrial node is a part of the heart that sends out electrical signals that make the heart muscle contract. Presentation Title 16 9/3/20XX Presentation Title 17 ORGANS… Please read and watch videos for the next class 9/3/20XX Presentation Title 18 THANK YOU 9/3/20XX Presentation Title 19