Human Biology ATAR Year 11 Chapter 5 Pages

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Presentation transcript:

Human Biology ATAR Year 11 Chapter 5 Pages 53 - 59 Tissues Human Biology ATAR Year 11 Chapter 5 Pages 53 - 59

Epithelial tissue Connective tissue Muscular tissue Nervous tissue Columnar Cuboidal Squamous Connective tissue Matrix Muscular tissue Skeletal muscle Involuntary muscle Cardiac muscle Nervous tissue All cells in the body are specialised in some way. Each type of cell has a specific job to do. There are about 200 different types of cells in our bodies. These types of cells form all of the different types of tissues. There are 4 broad categories of tissues, classified according to their function and characteristics. Each category has many variations; tissues that serve many different purposes. Keywords Making connections

Tissues A tissue is a group of cells that are similar in structure and function Four basic types of tissue: Epithelial tissue Connective tissue Muscular tissue Nervous tissue

Epithelial tissue Function Characteristics Examples: Covering or lining Characteristics Cells closely joined together Various shapes – thin and flat (squamous), column- shaped (columnar), cube-shaped (cuboidal) Smooth surface Examples: outer layer of skin outside lining of many organs inside lining of the stomach, heart and intestines

Connective tissue Function Characteristics Examples Bone & cartilage Provides support Holds body parts together Characteristics Cells spaced apart, forming a matrix The matrix is filled with non-cellular material Examples Bone & cartilage Tendons & ligaments Fat storage tissue Blood

Muscular tissue Function Characteristics Can respond to stimuli and contract (become shorter) Facilitates controlled movement Characteristics Skeletal muscle (voluntary muscle) Cells are shaped like long fibres Cells are striated (striped) Involuntary muscle Cells are more round in shape, with pointy ends Cells are smooth or not striated Cardiac muscle Cells are branched fibres

Muscular tissue

Nervous tissue Function Characteristics Examples Send signals or electrical impulses from one cell to another Allows us to perceive and respond to the environment Characteristics Have a cell body, dendrites and an axon Are spindly or thread-like in shape Examples Brain, spinal cord, nerves

Tissues – a comparison