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Body Systems L 1-3

TermDefinition
cell differentiation the process by which cells become different types of cells
tissue a group of similar types of cells that work together to carry out specific tasks
organ a group of different tissues working together to perform a particular job
organ system a group of organs that work together and perform a specific task
muscle strong body tissue that can contract in an orderly way
joint where two or more bones meet
ligament the tissue that connects bones to other bones
hydrostatic skeleton a fluid filled internal cavity surrounded by muscle tissue
exoskeleton a thick, hard outer covering; protects and supports an animal’s body
cardiac muscle muscle found only in the heart
smooth muscle involuntary muscle named for its smooth appearance
Calorie the amount of energy it takes to raise the temperature of 1 kg of water by 1°C
nutrient a part of food used by the body to grow and survive
digestion the mechanical and chemical breakdown of food into small particles and molecules that your body can absorb and use
mechanical digestion a process in which food is physically broken into smaller pieces
chemical digestion a process in which chemical reactions break down pieces of food into small molecules
esophagus a muscular tube that connects the mouth to the stomach
peristalsis waves of muscle contractions that move food through the digestive tract
villus fingerlike projections, many of which cover the folds of the small intestine
excretory system the system that collects and eliminates wastes from the body and regulates the level of fluid in the body
photosynthesis a series of chemical reactions that convert light energy, water, and carbon dioxide into the food
Created by: Kuiper
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