Tissues 0.0 / 5 ? OtherAnatomy and PhysiologyOtherOther Created by: rosieewatsonCreated on: 21-11-19 10:26 What is a tissue? Group of similar cells and their products which perform a specific function 1 of 34 What are the 4 types of tissues? Muscular, nervous, epithelial and connective 2 of 34 What does the epithelial tissue do? Covers the inner and outer surfaces of various body parts such as skin, organs, body cavities and blood vessels 3 of 34 What is the function of epithelial tissue? Absorption, secretion and protection 4 of 34 Different types types of epithelium are named according to what? Their layering and shape of their cells 5 of 34 What are the three different shapes of cells? Squamous, cuboidal and columnar 6 of 34 What is a simple epithelium? A single sheet of epithelium - just one cell thick 7 of 34 What is a stratified epithelium? When it is layered 8 of 34 What is a pseudostratified epithelium? One layer of cells, but all the cells are different shapes and sizes 9 of 34 FACT! The tissue may contain specialised cells - they produce mucus 10 of 34 What are specialised cells called? Goblet cells - often accompanied by cilia 11 of 34 What is cilia? Hair like projections 12 of 34 What do cilia do? Protrube from the edge of goblet cells and waft mucus along the surface of the epithelium 13 of 34 Where is glandular tissue derived from? Epithelial tissue 14 of 34 Define unicellular One cell 15 of 34 Define multi- cellular Multiple cells e.g. sebacous and sweat glands 16 of 34 What are glands classified as? Endocrine or exocrine 17 of 34 Endocrine glands Do not have ducts 18 of 34 Function of endocrine glands Release secretions directly into the bloodstream - which are then transported to their target organ or tissue 19 of 34 What do endocrine glands secrete? Hormones 20 of 34 Exocrine glands Have ducts (small tubes) - lead to the nearby epithelial surface 21 of 34 Function of exocrine glands Secretions are emptied onto the epithelial surfaces via the ducts 22 of 34 How are exocrine glands classified? By their structure and secretions 23 of 34 Name the 4 ways exocrine glands can be divided into? Tubular, alveolar/acinar, simple (unbranched duct), compound (branched duct) 24 of 34 What consists of connective tissue? Extraceullar matrix - within has different different cells embedded 25 of 34 What is ECM made up of? Ground substance and variety of fibres 26 of 34 Define ground substance Gel - like substance composed of proteoglycans and glycosaminoglycans 27 of 34 Function of the ground substance? Designed to resist compressive forces and provide cushioning support in the tissue 28 of 34 True or false - changing the composition of the matrix changes the properties of the tissue True 29 of 34 Function of fibres Provide tensile strength of the tissue 30 of 34 Collagen fibres Very strong but not stretchy 31 of 34 Elastic fibres Stretchy but weaker than collagen fibres 32 of 34 Where are cells present? Within the matrix 33 of 34 What do fibroblasts do? Produce ECM - thus provide the structure of the tissue 34 of 34
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