Body Systems

Growth and development occur in all living organisms. When this organ in a human gets worn away it is replaced…

• liver
•  lung
• skin
• kidney

This organ is the largest organ in the body and belongs to this system...

• Heart – Circulatory system
• Brain – Nervous system
• Small Intestine – Digestive system
• D. Skin – Integumentary system  

This body system defends the body against disease...

• Digestive system
• Integumentary system
• Nervous system
• D. Circulatory system

The excretory system is connected to other systems, such as the circulatory system and the digestive system. The excretory system's primary function is to...

• get rid of wastes
• get nutrients to the cells
• exchange gases
• to protect the other systems

Which body system is responsible for bringing food and oxygen to every cell in your body?

• Respiratory
• Circulatory
• Excretory
• Reproductive

If a virus got into your body, which systems might work together to fight it?

• The circulatory system and the digestive system 
• The immune system and the lymphatic system 
• The skeletal system and the muscular system 
• The urinary system and the respiratory system

The heart is to the circulatory system as _____ is to the nervous system.

• lungs
• hand
• kidneys
• brain

This system is responsible for breaking down food so that nutrients may enter the blood stream.

• digestive
• circulatory
• respiratory
• excretory

Which body system includes the kidneys and bladder?

• Skeletal
• Muscular
• Endocrine
• Urinary

Which body system tells you when to reach for and catch a falling book?

• muscular
• skeletal
• nervous
• respiratory