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Chapter 2Admn1040

cell basic unit of all living things. -human body composed of trillions, vary shape, size, function
cell membrane forms the boundary of the cell
cytoplasm gel-like fluid inside the cell
nucleus largest structure within the cell, usually spherical and centrally located. -contains chromosomes for cellular reproduction & is control centre of the cell
chromosomes located in the nucleus of cell 46 total chromosomes in all normal human cells sex cells, 23.
genes regions within chromosome. Each chromosome has several thousand genes that determine hereditary characteristics
DNA deoxyribonucleic acid comprises each gene, is genetic material that regulates activities of the cell
tissue group of similar cells that performs a specific function
muscle tissue composed of cells that have special ability to contract, usually producing movement
nervous tissue found in the nerves, spinal cord, and brain. responsible for coordinating and controlling body activities
connective tissue connects, supports, penetrates, and encases various body structures. Adipose(fat), osseous (bone) tissues, and blood are types
epithelial tissue major covering of the external surface of the body, forms membranes that line body cavities & organs & is the major tissue in glands
organ two or more kinds of tissues that together perform special body functions e.g.skin is an organ composed of epithelial, connective, muscle, & nerve tissue
system group of organs that work together to perform complex body functions e.g. heart->blood, blood vessels. Transport nutrients & oxygen to cells and remove co2 & waste
Integumentary System Composed of skin, nails, and glands. -protective covering of body, regulates temp, helps manufacture vit D
Respiratory system Nose, pharynx(throat), larynx(voice box), trachea(windpipe), bronchial tubes,& lungs -performs respiration which provides for the exchange of oxygen and co2 within body
Urinary system Kidneys, ureters, bladder, urethra. -removes waste material (urine) from the body, regulates fluid volume, & maintains electrolyte concentration
Reproductive system female- ovaries, uterine tubes, uterus, vagina, and mammary glands male- testes, urethra, penis, prostate gland & associated tubes.
Cardiovascular system Composed of the heart & blood vessels. -Pumps and transports blood throughout body
Lymphatic system composed of a network of vessels,ducts, nodes, & organs -Provides defense against infection
Digestive System Composed of the gastrointestinal tract which includes esophagus, stomach, large&small intestine, plus accessory organs, liver, gallblader, pancreas -prepares food for use by body & eliminates waste
Musculoskeletal system muscles, bones, joints -provides movement & framework for body, protects vital organs such as brain, stores calcium, & produces red blood cells
Nervous system brain, spinal cord, nerves -Regulates body activities by sending and receiving messages
Endocrine system composed of glands that secret hormones. -hormones regulate many body activities
Created by: toranchulaa