Science Ch. 11 Vocab Flashcards
The basic unit of structure and function in living things.
Cell
A group of similar cells that perform a specific function.
Tissue
A body structure that is composed of different kinds of tissues that work together.
Organ
A group of organs that work together to perform a major function.
Organ System
An organ that produces and releases chemicals either through ducts or into the bloodstream.
Gland
A chemical that affects growth and development.
Hormone
The condition in which an organism’s internal environment is kept stable in spite of changes in the external environment.
Homeostasis
A muscle that is attached to the bones of the skeleton and provides the force that moves the bones; also called striated muscle.
Skeletal Muscle
Involuntary muscle found inside many internal organs of the body.
Smooth Muscle
Involuntary muscle tissue found only in the heart.
Cardiac Muscle
A muscle that appears banded; also called skeletal muscle.
Straited Muscle
