Levels of Organizations
What is the smallest unit of life?
Cell
Which system transports oxygen and nutrients?
Cardiovascular System
: Anatomy is the study of ______.
Structure
Match: Skeletal, Digestive, Respiratory, Nervous → support, nutrients, gas exchange, control
Skeletal–support; Digestive–nutrients; Respiratory–gas exchange; Nervous–control
Explain why the levels of organization are important to understanding anatomy & physiology.
They show how simple structures build into complex systems working together.
Order from smallest to largest: tissue, organ, cell, organism, organ system.
Cell → Tissue → Organ → Organ System → Organism
Which system removes wastes and regulates water balance?
Urinary System
Q2: Physiology is the study of ______.
Function
Which level of organization is the stomach?
Organ
Name the 12 Body Systems
Integumentary, Skeletal, Muscular, Nervous, Endocrine, Cardiovascular, Lymphatic, Respiratory, Digestive, Urinary, Male Reproductive, Female Reproductive
What level comes between organ and organism?
Organ system
Which system controls body functions using hormones?
Endocrine System
Give an example of how structure and function are related in the heart.
Thick walls of ventricles pump blood with force.
Which level of organization is the stomach?
Muscular System
What is homeostasis (bonus)?
The body's ability to maintain stable internal conditions.
Which level is made of groups of similar cells?
Tissue
Which system protects the body against pathogens?
Immune/Lymphatic System
True/False: Anatomy and physiology are independent of each other.
False
Which system forms the external covering of the body?
Integumentary System
Why is function dependent on structure?
Because the way something is built determines what it can do.
True/False: An organ is made up of only one type of tissue.
False
Which system is responsible for gas exchange?
Respiratory System
Fill in the blank: The ______ of bones allows them to support the body.
Structure
True/False: The circulatory and cardiovascular systems are the same.
True
Essay: Give a real-world example where knowing structure helps explain function.
Ex:Lungs have alveoli → large surface area for gas exchange.