What is the body system that sends and receives electrical signals from the brain?

• Skeletal System
• Nervous System
• Muscular System
• Digestive System

Which body system transports oxygen and nutrients through out the body?

• Muscular System
• Nervous System
• Digestive System
• Circulatory System

What system receives oxygen and gets rid of carbon dioxide?

• Heart
• Muscular System
• Veins 
• Respiratory System

What system breaks food down into energy for the body?

• Stomach
• Digestive System
• Respiratory system
• Lungs

Which of the following is in the correct order from smallest to largest?

• tissue-organ-system-cell
• cell-organ-tissue-system
• System-tissue-cell-organ
• cell-tissue-organ-system

The _________________ includes two kidneys that filter waste from the blood and a bladder that holds urine? 

• endocrine system
• excretory system
• cardiovascular system
• nervous system

What three systems work together to move the body?

• Skeletal, Muscular, Nervous
• Skeletal, Respiratory, Digestive
• Nervous, Circulatory, Skeletal
• Circulatory, Respiratory, Digestive

What are some major parts of the digestive system?

• kidneys, liver, bladder, and skin
• brain, spinal cord, and nerves
• mouth, stomach, large intestine, small intestine
• heart, arteries, and veins

The _________________ which consists of organs and small glands, works to produce hormones, or chemical messengers, that are released to regulate body functions

• reproductive system
• lymphatic/immune system
• endocrine system
• digestive system

The ________________ is a network of vessels that collects fluids and traps bacteria and viruses to protect the body from disease. It also produces and stores infection-fighting cells.

• lymphatic/immune system
• skeletal system
• urinary system
• cardiovascular system