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The Human Body

Body Structure and Function LO 4.1

TermDefinition
connective tissue fibrous substance that holds and connects body parts together
cell membrane outer covering of the cell
nucleus the central portion of the cell and directs all activities
cytoplasm the substance surrounding the nucleus that instructs cells to perform various essential tasks
tissues a group of cells with specialized functions
3 basic parts of the cell cell membrane, nucleus, cytoplasm
4 types of tissue in the body connective, epithelial, muscle and nerve
organs groups of tissues that work together to perform a specific function
muscle tissue contracts and expands allowing the body to move
tissue cells that work together to perform a single function are called
epithelial tissue covers the internal and external body surfaces
epithelial Skin and the intestines are made up of this tissue type
musculoskeletal system supports the body; protects organs; provides body movement; and includes muscles, bones and cartilage
cardiovascular system includes the heart and blood vessels
respiratory system includes the lungs and airways and performs breathing
nervous system regulates most body activities and sends and receives messages from the sensory organs consists of the brain, spinal cord, and peripheral nerves
urinary system eliminates metabolic waste and secretes fluid waste, helps to maintain acid-base and water salt balance, and helps regulate blood pressure includes kidneys, ureters, bladder, and urethra.
lymphatic and immune system includes the lymph, the glands and the vessels of this system and also the nonspecific and specific defense
digestive system made up of the organs that digest and excrete waste
endocrine system includes the glands that secrete the hormones that regulate many of the body's activities
system a group of organs that work together to perform one of the body's major functions
sensory system the eyes and ears and those parts of the other systems that are involved in the reactions of the five senses.
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