Human Body Systems

Which is the correct order of the levels of organization from smallest and most simple to largerst and most complex?

• cell, organ, tissue, organ system

• cell, tissue, organ system, organ

• cell, tissue, organ, organ system

• cell, organ system, organ, tissue

The function of the excretory system is to? What is the main organ it includes?

• Bring in oxygen, and remove carbon dioxide. lungs

• Remove waste. kidneys

• Send and receive messages. brain

• Pump blood around the body. heart

The function of the respiratory system is to? What is the main organ it includes?

• Bring in oxygen, and remove carbon dioxide. lungs

• Remove waste. kidneys

• Send and receive messages. brain

• Pump blood around the body. heart

What is the function of the digestive system?

• It transports blood and oxygen to your cells

• It breaks down food so the nutrients can be absorbed by your body

• It helps you breathe by taking in oxygen and transporting carbon dioxide out of your body

• It helps you move

Which system in the human body includes the heart, blood, arteries, and veins?

• cardiovascular

• muscular

• digestive

• respiratory

Which statement best describes the relationship between the nervous system and the muscular system?

• The nervous system controls the muscular system.

• The muscular system controls the nervous system.

• The nervous system provides nutrients for the muscular system.

• The muscular system provides nutrients for the nervous system.

Which two body systems work together to support the body and allow the body to move?

• circulatory and respiratory

• digestive and nervous

• skeletal and muscular

• circulatory and digestive

This system secretes chemical messages (hormones) to different parts of the body.

• excretory
• endocrine
• digestive
• immune

This system is the body's defense against attack.

• endocrine
• excretory
• muscular
• immune

What function do the endocrine system and nervous system have in common?

• Both relay messages to cells throughout the body.
• Both produce electrical signals that are carried by neurons
• Both produce hormones which are chemical messengers
• both remove wastes and toxins from the body