Viewing Cells and Tissues - Educational Presentation PDF

VIEWING CELLS AND TISSUES  SYLLABUS OBJECTIVES The various tissues of the human Conduct investigations, including body perform specific functions and microscopy techniques, competently can be categorised into four basic and methodically for the collec...

VIEWING CELLS AND TISSUES  SYLLABUS OBJECTIVES The various tissues of the human Conduct investigations, including body perform specific functions and microscopy techniques, competently can be categorised into four basic and methodically for the collection of tissue types: epithelial, connective, valid and reliable data. muscular and nervous.   All organisms consist of cells working together to provide structure and CELLS AND function. TISSUES  Cells make up tissues, which make up REVIEW organs, which make up body systems. TISSUE TYPES  Tissues are made up of multiple cells of the same type working together to undertake a function.  There are four main tissue types:  Epithelial tissue  Connective tissue  Muscular tissue  Nervous tissue Epithelial Tissue  Epithelial tissue is made up of epithelial cells very close to each other.  Its function is to cover the outside or line the inside of organs and protect them. Connective Tissue  Connective tissue is made up of widely spaced cells surrounded by a matrix.  Its function is to connect other tissue types to each other and to provide structure. Muscular Tissue  Muscular tissue is made up of long, thin, closely associated muscle cells.  The cells communicate with each other to coordinate movement. Nervous Tissue  Nervous tissue is made up of “star shaped” nerve cells called neurons.  Nervous tissue sends nerve impulses to muscles, organs and glands to control them, and therefore the body. VIEWING CELLS AND TISSUES  We can view organs and systems with the naked eye, but in order to view cells and tissues we must use a microscope.  A microscope uses a series of lenses to magnify an object and make it more easy seen. Microscopes Magnification  Ocular Lens- The lens that one looks into.  Objective Lens- The lens closest to the object.  Total magnification- To find the total magnification, multiply ocular magnification by objective magnification. Drawing Use a pencil Neat, ruled lines that do not overlap All labels to the right No arrows on lines Each diagram = at least half a page Magnification should be written at the bottom of the diagram Descriptive Title Should be UNDERNEATH the drawing (Figure 1:_____)