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Unit 7(a) Science Mini-Test Review
Terms in this set (25)
A membrane covered structure that has all of the materials necessary for life. (basic unit of life)
The tissue whose functions include support, protection, insulation, and nourishment. (also joins and cushions organs)
The condition that results from excessive loss of body water.
The bottom, deeper, layer of skin, it is the thicker of the two layers and has many fibers made of collagen in it (makes the skin strong and flexible) and also contains many other structures like nerves, blood vessels, hair follicles, muscle fibers, oil glands & sweat glands.
The top layer of skin, it is the thinner of the two layers and is made of epithelial tissue and keratin (a protein that helps make skin tough).
The tissue that covers and protects underlying tissue.
Something outside the body that causes the animal to react.
To discharge non-useful material from the system (of an organism).
The ability of an organism (or cell) to seek and keep a condition of stability within its internal environment when dealing with external changes.
A collection of organs whose primary function is to help the body maintain a stable and healthy internal environment (homeostasis). The system composed of the skin, hair, and nails.
Something inside of an animal's body that causes the animal to react.
A darkening chemical in the skin and hair that determines its color.
The tissue made of cells that can contract and relax to produce movement.
Tissue that sends electrical signals throughout the body.
Sweating, the functional secretion of sweat.
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