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Human Body 7th grade
Ms. White Science Fusion p. 5-70
| Term | Definition |
|---|---|
| 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
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