Digestive and Excretory Systems

An alligator's, digestive system breaks down food, and its excretory system removes waste products. Which of the following do these and other organ systems make up?

• a cell

• a tissue

• an organ

• an organism

Organ systems in the human body work together to keep a human alive and well. Which of the following statements describes how the circulatory and excretory systems work together to maintain the human body?

• They bring oxygen into the body and deliver it to cells.

• They break down food and deliver nutrients to cells.

• They transmit electrical signals and move the body.

• They remove wastes produced by cells.

The liver is one of several organs that work together to break down food in the human body. The diagram shows these organs. Which of the following do these organs make up?

• a cell

• a tissue

• an organ system

• an organism

Which two body systems remove waste products from the body?

• the digestive and nervous systems

• the respiratory and excretory systems

• the circulatory and reproductive systems

• the musculoskeletal and immune systems

Which of the following is NOT part of your excretory system?

• Heart

• Lungs

• Kidneys

• Skin

The job of your kidneys is to...

• Create feces

• Take carbon dioxide out of your blood

• Put oxygen into your blood

• Clean blood, sending waste to bladder

Which 2 systems work together when your lungs release carbon dioxide as waste?

• Respiratory and Digestive

• Respiratory and Excretory

• Excretory and Muscular

• Skeletal and Muscular

Which 2 systems work together when blood takes nutrients from your small intestine to your cells?

• Circulatory and Digestive

• Circulatory and Muscular

• Digestive and Respiratory

• Digestive and Muscular

Getting rid of waste is the job of which system?

• Excretory

• Digestive

• Respiratory

• Muscular

Breaking down food is the job of which system?

• Muscular

• Circulatory

• Excretory

• Digestive