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12. Plants & Animals

Regulation and Response

TermDefinition
integumentary System the organ system that protects the body from various kinds of damage, such as loss of water or abrasion from outside
Nervous System the network of nerve cells and fibers that transmits nerve impulses between parts of the body
Endocrine System the collection of glands that produce hormones that regulate metabolism, growth and development, tissue function, sexual function, reproduction, sleep, and mood
Urinary a group of organs in the body concerned with filtering out excess fluid and other substances from the bloodstream
Tropism (geo-/gravi-, thigmo-, photo-, hydro- the turning of all or part of an organism in a particular direction in response to an external stimulus (sunlight, gravity, touch)
Stimulus an event that evokes a specific functional reaction in an organ or tissue
Reflex/response an action that is performed as a response to a stimulus and without conscious thought
Hormones signaling molecules produced by glands in multicellular organisms that are transported to organs to regulate physiology and behaviour
enzymes a substance produced by a living organism that acts as a catalyst to bring about a specific biochemical reaction. (speeds up chemical reactions and lowers activation energy)
feedback mechanisms a process that uses the conditions of one component to regulate the function of the other. It is done to either increase or dampen the change in the system.
regulation any process that modifies the frequency, rate, or extent of any biological process
homeostasis the tendency of the body to seek and maintain a condition of balance or equilibrium within its internal environment, even when faced with external changes
Created by: cfhsbiology