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Human Body 7th grade

Ms. White Science Fusion p. 5-70

homeostasis the maintenance of a constant internal state in a changing environment
skeletal system the organ system whose primary function is to support and protect the body and to allow the body to move
joint a place where two or more bones meet
muscular system the organ system whose primary function is movement and flexibility
tendon a tough connective tissue that attaches a muscle to a bone or to another body
tendon a tough connective tissue that attaches a muscle to a bone or to another body.
blood the fluid that carries gases, nutrients, and wastes through the body and that is made up of platelets, white blood cells, red blood cells, and plasma
artery a blood vessel that carries blood away from the heart to the body's organs
capillary a tiny blood vessel that allow an exchange between blood and cells in tissue
vein a vessel that carries blood to the heart
respiratory system a collection of organs whose primary function is to take in oxygen and expel carbon dioxide
trachea thin-walled tube that extends from the larynx to the bronchi, carries air to the lungs, also called windpipe
bronchi one of the the two main branches of the trachea that lead directly to the lungs
digestive system the organs that break down food so that it can be used by the body
esophagus a long, straight tube that connects the pharynx to the stomach
stomach the saclike, digestive organ that is between the esophagus and the small intestine and that breaks down food by the action of muscles, enzymes, and acids
small intestine the organ between the stomach and the large intestine where most of the breakdown of the food happens and most of the nutrients from the food are absorbed.
large intestine the broader and shorter portion of the intestine, where water is removed from the mostly digested food to turn the waste into semisolid feces, or stool
excretory system the system that collects and excretes nitrogenous wastes and excess water from the body in the form of urine.
liver largest organ in the body, makes bile, stores and filters blood, and stores excess sugars as glycogen
pancreas the organ that lies behind the stomach and that makes digestive enzymes and hormones that regulate sugar levels
nervous system structures that control the actions and reactions of the body in response to stimuli from the environment.
neuron a nerve cell that is specialized to receive and conduct electrical impulses.
Created by: Ms.White