Human Body Systems

Which two human body systems are MOST responsible for getting oxygen to cells?

• digestive and skeletal

• skeletal and circulatory

• circulatory and respiratory

• respiratory and digestive

There are different kinds of muscles in the human body. Each muscle is formed from a group of cells that works together. The main function of a group of muscle cells is to

• make oxygen.

• release energy.

• digest nutrients.

• cause movement.

What body system is shown in the diagram?

• digestive

• reproductive

• circulatory

• respiratory

Which is a major organ of the circulatory system?

• brain

• heart

• kidney

• stomach

Which best describes the role of the respiratory system?

• It helps people stand upright.

• It helps people eat and digest different foods.

• It helps people transport blood throughout their bodies.

• It helps people breathe in oxygen and breathe out carbon dioxide.

In which system of the human body does the heart belong?

• skeletal

• respiratory

• cardiovascular/circulatory

Which best compares the respiratory system to the circulatory system?

• The respiratory system transports oxygen to cells, while the circulatory system provides oxygen for cells.

• The respiratory system provides oxygen for cells, while the circulatory system transports oxygen to cells.

• The respiratory system breaks down food for cell energy, while the circulatory system rids the body of waste.

• The respiratory system rids the body of waste, while the circulatory system breaks down food for cell energy.

The circulatory system transports waste through the bloodstream. Which is the best example of another system working to remove waste from the body?

• The respiratory system releases carbon dioxide.

• The skeletal system produces new red blood cells.

• The digestive system breaks down food into nutrients.

• The nervous system send signals from the brain to the muscles.

Which body system is responsible for supplying the body with oxygen and removing carbon dioxide?

• nervous

• digestive

• respiratory

• muscular

Which best describes how the muscular system impacts movement of the human body?

• When a muscle expands, it pulls on the bone it is connected to and the bone moves.

• When a muscle contracts, it pulls on the bone it is connected to and the bone moves.

• When a muscle contracts, it pushes on the bone it is connected to and the bone moves.

• When a muscle expands, it pushes on the bone it is connected to and the bone moves.