Body systems

Which organ system in humans is most directly involved in the transport of oxygen?

• A. Nervous

• B. Excretory

• C. Digestive

• D. Circulatory

Which systems are responsible for removing carbon dioxide from the body? Select two correct answers.

• A. The endocrine system

• B. The circulatory system

• C. The muscular system

• D. The respiratory system

• E. The integumentary system

The main function of this system is to —

• F. control reproduction

• G. transport oxygen

• H. produce hormones

• J. filter blood to remove waste

What is the main function of the circulatory system?

• A . To distribute blood throughout the body

• B. To remove excess and waste materials from the body

• C. To secrete hormones in different areas of the body

• D. To coordinate the actions of the body

Match the following body systems to their corresponding picture

• Muscular

• 
• Skeletal

• 
• Digestive

• 
• Urinary

• 
• Circulatory

• 

What does the skeletal system do?

• Supports and protects the body

• Moves blood around the body

• Brings oxygen into the body and remove carbon dioxide

• Digests food

The respiratory system is responsible for

• Obtaining food and excreting waste

• Obtaining carbon dioxide and eliminating oxygen

• Obtaining white blood cells and removing red blood cells

• Obtaining oxygen and eliminating carbon dioxide

Which set of organs belong to the nervous system?

• Heart, blood vessels

• Kidneys, urinary bladder

• Esophagus, stomach, intestines

• Brain, spinal cord

Which organs belong to the circulatory system?

• Heart, blood vessels, veins

• Esophagus, stomach, kidneys

• Trachea, larynx, lungs

• Brain, spinal column

Which organs belong to the respiratory system?

• Bones, cartilage

• Cardiac, smooth, skeletal

• Trachea, larynx, lungs

• Kidneys, bladder