7.L.1.3 | Body Organization Levels Flashcards
(6 cards)
CELLS

the smallest structural and functional unit of an organism, typically microscopic and consisting of cytoplasm and a nucleus enclosed in a membrane. Microscopic organisms typically consist of a single cell, which is either eukaryotic or prokaryotic.
TISSUES

any of the distinct types of material of which animals or plants are made, consisting of specialized cells and their products.
ORGANS

a part of an organism that is typically self-contained and has a specific vital function, such as the heart or liver in humans.
ORGAN SYSTEM

in biology, an organ system is a group of organs that work together to perform one or more functions. Each does a particular job in the body, and is made up of certain tissues.
ORGANISM

an individual animal, plant, or single-celled life form.
HOMEOSTASIS

the tendency toward a relatively stable equilibrium between interdependent elements, especially as maintained by physiological processes.