🩵 Unit 1: Levels of Organization Flashcards
Anatomy
study of body structures and relationships between them
Physiology
study of how body parts function and work
Levels of Organization
chemical—> cellular—> tissue—> organ—> organ system—> organism
Lowest Level of Organization
atoms and molecules
Cytology
study of cells
How are cells formed?
chemicals join or come together in different ways
Cells
basic unit of life
Cellular Level
a point organisms must reach to have life
Tissue
a group of similar cells joined together to perform a specific function
Histology
study of tissue
The 4 Types of Tissue
Epithelial
Muscle
Connective
Muscle
Organ
made of different tissues joined together
Examples of Organs
Heart, Lungs, Stomach
Organ System
groups of organs that form a system
Organism
all systems work together to create a functioning individual