Levels of Organization
Systems
Organs
A & P
100

The basic building blocks of all living things

What is cells?

100

To act as the body's communication network

What is the nervous system?

100

The lungs, trachea, and nasal cavity.

What is the respiratory system?

100

The study of the structure of the human body.

What is anatomy?

200

The basic building block of all matter and chemistry

What is an atom?

200

Filter waste and excess fluid from the blood.

What is the urinary system?

200

Bone marrow, spleen, and tonsils. 

What is the lymphatic system?

200

The study of the function of the human body

What is physiology?

300

A structure composed of different tissues that work together to perform a specific function

What is an organ?

300

Keeps body fluid levels in balance and defends the body against infections.

What is the lymphatic system?

300

Liver, Colon, and gallbladder

What is the digestive system?

300

Example: parts of the heart

What is anatomy?

400

To a living thing that has an organized structure

What is an organism?

400

Protection, temperature regulation, sensory reception, and vitamin D synthesis.

What is the integumentary system?

400

Tibia, fibula, and ribs

What is the skeletal system? 

400

Example: Pumping of blood in the heart.

What is physiology? 

500

List the levels of organization in order.

What is an atom, molecule, cell, tissue, organ, organ system, organism?

500

To regulate various bodily functions by producing and releasing hormones.

What is the endocrine system?

500

Deltoid, rotator cuff, and quadriceps 

What is the muscular system?

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