Flashcards Unit 2
Chemical change
The formation of a new substance with different properties; cannot be undone by physical means.
Circulatory system
Transports nutrients and oxygen to the body.
Digestive system
Breaks down food to provide nutrients and energy.
Endocrine system
Regulates the body with hormones.
Excretory system
Removes waste from the body.
External stimulus
A change in the environment outside of the organism.
Feedback mechanism
A response within a system that influences the activity of that system.
Force
A push or pull that can change the position or motion of an object or material.
Homeostasis
The body’s ability to keep the internal balance of the body stable.
Integumentary system
Provides protection of the body.
Internal stimulus
A change within the organism.
Motion
A change in the position of an object.
Muscular system
Provides movement of the body.
Nervous system
Controls and coordinates the body.
Physical change
A change which alters matter without changing its chemical composition or the identity of the substance.
Reproductive system
Produces offspring.
Respiratory system
Exchanges oxygen and carbon dioxide.
Skeletal system
Provides structure and protection for the body.
Stable
Balanced; unchanging.
Stimulus
A thing or event that causes a response or reaction.
System
Interacting, interrelated, or interdependent elements forming a more complex whole.
