Levels of Organization and Body Systems

The brain, spinal cord, and nerves are all organs that work together to send messages throughout the body. This is an example of ____.

•  an organ system
• an organ
• a cell
• an organelle

The brain is composed, or made of, many different types of cells and tissue. What level of organization is the brain?

• organ system

• organ

• cell

• tissue

A group of cells works together to connect and support various parts of the body. This group of cells can be called a _____.

• an organ
• an organism
• a system
• a tissue

Which of the following is the correct match between a cell, tissue, and organ?

• skin cell, skin tissue, heart

• muscle cell, muscle tissue, bicep (arm muscle)

• fat cell, fat tissue, liver

• nerve cell, skin cell, brain

The study of the shape and structure of body parts

• anatomy

• physiology

• homeostasis

• metabolism

The branch of biological science that studies and describes how body parts work or function

• anatomy

• physiology

• homeostasis

• metabolism

Which of the following is the smallest unit of all living things?

• organ

• organ system

• tissue

• cell

The endocrine system plays a major role in

• gas exchange

• hormone production

• active defense against pathogens

• movement

The lymphatic system provides

• mechanical breakdown of food

• support for the body's structure

• extra defense against pathogens

• nutrients

This body system helps the body to regulate temperature as well as water loss.

• Integumentary

• Circulatory

• Respritory

• Lymphatic