Term Definition
skeletal system supports body and protects organs
muscular system allows body movements
respiratory system O2/CO2 exchange
circulatory system circulates blood, moving oxygen/nutrients
excretory system removes waste from body
nervous system controls your senses and and carries mesages
digestive system breaks down food into nutriments
immune system helps heal injuries and fight off diseases
integumentary system protects your body from injury or infection
endocrine system produces chemicals that regulate/control
reproductive system produces offspring
digestion breaks down food into smaller and simpler substances
saliva helps moisten and soften the bolus and to break it down chemically
pharynx connects the mouth to the digestive tube
esophagus contains muscles that contract and expand like rubber bands and helpsto push food down
stomach a digestive organ with thick muscular walls
small intestine a coiled, tubular organ that is connected to the stomach.
large intestine a thick, tubular organ that removes undigested waste
inhale to breath in
lungs the main organ of the Respiratory System
exhale to breath out
diafragm a flat muscle that controls breathing
capillary a tiny blood vessel
alveoli thin-walled air sacs within the lungs
diffusion the movement of particles from areas with high concentration to areas with low concentration
heart the muscular organ that pumps blood through the body
artery a blood vessel that carries blood away from the heart
vein a blood vessel that transports blood back to the heart
urinary system the part of the excretory system that handles most of the liquids
kidneys a bean-shaped organ that filters waste out of the blood
urine a fluid consisting of body waste and excess water
nephron small individual filters within the kidneys
bladder an organ of the excretory system that temporarily stores urine
urethra a tube that carries urine from the bladder to the outside of the body

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