Science Unit 2- Human Body Systems Test (2021)

The chart shows structures that work together in an organism. What do the structures as a whole represent?

• organ

• organelle

• organ system

• organism

Tags

NGSS.MS-LS1-3

Which organ system is correctly matched with its main function?

• The excretory system defends the body from disease causing organisms.

• The respiratory system controls body responses to the environment.

• The skeletal system sends signals to the body through the nerves.

• The digestive system breaks down food into nutrients for energy.

Tags

NGSS.MS-LS1-3

Which two body systems work together when the diaphragm contracts and relaxes, causing air to move in and out of the lungs?

• muscular and respiratory

• circulatory and digestive

• nervous and immune

• respiratory and skeletal

Tags

NGSS.MS-LS1-3

Which of the following is NOT an organ of the digestive system?

• blood

• stomach

• liver

• small intestine

Which of the following correctly describes the function of the respiratory system?

• The respiratory system carries oxygen and other nutrients to all cells and carries waste away from cells.

• The respiratory system sends signals to the brain from all parts of the body.

• The respiratory system digests food and absorbs nutrients for the body.

• The respiratory system inhales oxygen into the lungs, and then expels carbon dioxide.

In the lungs, carbon dioxide and oxygen are exchanged in tiny sacs that are covered in capillaries. Which two systems are working together to complete this exchange?

• Excretory and circulatory systems

• Respiratory and circulatory systems

• Digestive and respiratory systems

• Nervous and immune systems

Tags

NGSS.MS-LS1-3

The immune system uses white blood cells to fight off pathogens that have entered the body. The immune system depends on help from which two systems in order to function properly?

• skeletal-produces blood cells; circulatory-carries white blood cells around the body
• nervous-carries white blood cells around the body; circulatory-produces blood cells
• digestive-produces blood cells; muscular-carries blood cells around the body
• excretory-produces blood cells; nervous-carries the blood cells around the body

Tags

NGSS.MS-LS1-3

The nervous system communicates with all other organ systems by sending chemical and electrical signals. How does the nervous system communicate with other cells in the body?

• The nervous system communicates with the cells by sending hormones through the bloodstream.

• The nervous system communicates with the cells by sending signals through the nerves.

• The nervous system communicates with the cells by sending signals through the skin.

• The nervous system communicates with the cells by sending shock waves through the blood.

Which of the following describes the function of the organ labeled A?

• This organ pulls on the bones to make the body move.

• This organ provides protection and support for the body.

• This organ supplies the leg with oxygen.

• This organ regulates the temperature of the leg.

Which organ system is INCORRECTLY matched with its function?

• The muscular system allows the body to move.

• The skeletal system provides protection and support for the body.

• The cardiovascular system carries oxygen and nutrients to all body cells.

• The excretory system digests food to provide the body with nutrients.