Body systems

Which system absorbs oxygen and releases carbon dioxide?

• respiratory
• excretory
• endocrine
• immune

This system breaks down food into nutrients the body can absorb.

• digestive
• excretory
• reproductive
• immune

This system sends chemical messages (hormones) that regulate growth, development, and metabolism.

• endocrine
• nervous
• immune
• skeletal

Which system responds to stimuli, and contains the brain and spinal cord?

• reproductive
• endocrine
• nervous
• integumentary

This system carries oxygen, nutrients and waste around the body.

• Lymphatic
• Urinary
• Respiratory
• Circulatory

Homeostasis in the human body is often maintained by a: 

• neutral feedback loop 
• solar feedback loop
• positive feedback loop
• negative feedback loop

Which system uses hormones to regulate body activities?

• Integumentary
• Urinary
• Endocrine
• Immune

What is a main function of the muscular system?

• movement
• protection
• hormones
• fight infection

Which of the following shows the correct diagram

• Cell-Tissue-Organ-Organ System
• Cell-Organ-Tissue-Organ System
• Organ System-Organ-Tissue-Cell
• Tissue-Organ System-Organ-Cell

One role of the pancreas is to create enzymes to help breakdown food.  This function makes it part of which system?

• Endocrine
• Digestive
• Immune
• Urinary