CHAPTER 3 SCIENCE

the SMALLEST PARTS or UNITS of the human body

• TISSUE

• CELL

• ORGANS

form by a GROUP OF CELLS of the same kind

• CELL

• ORGAN

• TISSUE

MADE UP OF TISSUES with similar functions

• ORGAN

• TISSUE

• CELL

how many bones does an adult body have?

• 190

• 156

• 206

what is the LARGEST ORGAN of the body?

• skin

• hair

• blood

what is the MOST DELICATE PARTS of the body?

• HEART

• BRAIN

• LUNGS

covered and protected by the skull

• brain

• heart

• lungs

what carry messages between the body parts and the brain?

• brain

• nerves

• cell

this system helps keep a person safe

• nervous system

• circulatory system

• respiratory system

IT PUMPS BLOOD that carries oxygen and nutrients to the different parts of the body through tiny tubes.

• brain

• lungs

• heart