Levels of Organization
The simplest level of organization in the human body
What is a cell?
Basic unit of life
What is a cell?
A group of similar cells working together
What is tissue?
Structure made of two or more tissues
What is an organ?
System that includes the brain and spinal cord
What is the nervous system?
Cells combine to form this level
What is tissue?
The control center of the cell
What is the nucleus?
Tissue that covers surfaces of the body
What is epithelial tissue?
Organ that pumps blood
What is the heart?
System responsible for movement
What is the muscular system?
The correct order from simplest to most complex
What is cell → tissue → organ → organ system → organism?
The structure that controls what enters and leaves the cell
What is the cell membrane?
Tissue responsible for movement
What is muscle tissue?
Organ responsible for gas exchange
What are the lungs?
System that transports oxygen and nutrients
What is the circulatory system?
Multiple organs working together form this
What is an organ system?
Cells that carry oxygen in the blood
What are red blood cells?
Tissue that connects and supports body parts
What is connective tissue?
Largest organ in the body
What is the skin?
System that breaks down food
What is the digestive system?
The highest level of organization
What is an organism
Specialized cells that transmit nerve signals
What are neurons?
Tissue that sends electrical signals
What is nervous tissue?
Organ that filters blood and produces urine
What are the kidneys?
System that protects the body and prevents water loss
What is the integumentary system?