A&P - Body Systems & Homeostasis

Front

levels of organization

Back

• Cells → tissues → organs → organ systems → Organism

Front

Cells

Back

• Basic unit of structure and function in living things.

• Specialized to perform specific functions

Front

Tissues

Back

• groups of similar cells that perform a single function

• -Connective

• -Epithelial

• -Muscle

• -Nervous

Front

Organ

Back

a group of tissues that work together to perform a complex function

Front

• Organ system

Back

a group of organs that perform closely related functions

Front

Homeostasis

Back

• The process by which organisms keep internal conditions relatively constant despite changes

Front

• Feedback Inhibition

• (Negative Feedback loop)

Back

• The process by which a stimulus produces a response that opposes the original stimulus.

•  Brings a system closer to homeostasis

Front

• Positive Feedback loop

Back

•  Amplifies the effects of a small change