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1 Made up of blood vessels that carry blood away from and towards the heart.
2 A set of organs that allows a person to breathe and exchange oxygen and carbon dioxide throughout the body.
3 The system of organs responsible for getting food into and out of the body and for making use of food to keep the body healthy.
4 A passive biological system that removes excess, unnecessary materials from the body fluids of an organism.
5 The system that chemically controls the various functions of cells, tissue, and organs through the secretion of hormones.
6 A organ system consisting of skeletal, smooth and cardiac muscles.
7 The framework of the body, consisting of bones and other connective tissues, which protects and supports the body tissues and internal organs.
8 A complex collection of nerves and specialized cells known as neurons that transmits signals between different parts of the body.
9 The ability to maintain a constant internal environment in response to environmental changes.
10 A group of organs that work together to perform one or more functions.
11 A living that has an organized structure, can react to stimuli, reproduce, grow, adapt, and maintain homeostasis
12 Specialized structures within a cell that perform a specific function.
13 A type of diffusion that is usually related to cells.
14 A group of tissues in a living organism that have been adapted to perform a specific function.
15 The Smallest unit of life
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