Grade 5 Human Body

What is the major organ in the circulatory system?

• brain

• heart

• stomach

• liver

What body system lets us react to our environment? (like move our hand when it touches something hot)

• excretory

• respiratory

• nervous

• skeletal

What controls all of a cell's activities?

• cell wall

• cell membrane

• nucleus

• cytoplasm

What body system removes waste from the blood?

• excretory

• circulatory

• nervous

• skeletal

What body system breaks down food?

• circulatory

• digestive

• nervous

• skeletal

What is the thin covering that encloses a cell and holds its parts together?

• cell wall

• nucleus

• cell membrane

• cytoplasm

What is the main organ of our nervous system?

• brain

• liver

• stomach

• heart

What are organs made of?

• systems

• lungs

• tissue

• bones

What body system provides support for our bodies and protects our organs?

• circulatory

• nervous

• skeletal

• excretory

What body system gets oxygen from the air and gives it to cells?

• digestive

• circulatory

• respiratory

• excretory