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Systems of the human body
System Function Structures
Circulatory system pumping and channelling blood to and from the body and lungs heart, blood, and blood vessels
Digestive system digesting and processing food mouth, salivary glands, esophagus, stomach, liver, gallbladder, pancreas, intestines, rectum, and anus
Endocrine system communication within the body using hormones endocrine glands such as hypothalamus, pituitary, pineal body, thyroid, parathyroids, adrenals, and gonads
Immune system fights off infections and infestations leukocytes, tonsils, adenoids, thymus, spleen and bone marrow
Integumentary system covers body, reduces water loss, prevents entry of pathogens skin, hair and nails
Lymphatic system transfers lymph between tissues and the blood stream lymph, lymph nodes and lymph vessels
Musculoskeletal system muscles provide movement and a skeleton provides structural support and protection muscles, bones, cartilage, ligaments, and tendons.
Nervous system collecting information from senses, processing it, commanding muscles, glands eyes, ears, semicircular canals, other sensory organs, brain, spinal cord and nerves
Reproductive system reproduction female: ovaries, fallopian tubes, uterus, vulva, vagina, clitoris and breasts; male: testicles, vas deferens, seminal vesicles, prostate, and penis
Respiratory system breathing and gas exchange pharynx, larynx, trachea, bronchi, lungs, and diaphragm
Urinary system fluid balance, electrolyte balance, and excretion of urine kidneys, ureters, bladder and urethra