human body

How many limbs do humans have?

• 1

• 2

• 3

• 4

the ______________ system supports the body and protects the internal organs

• circulatory

• skeletal

• digestive

• respiratory

the main function of the __________ is to pump the blood to all the body

• lungs

• heart

• kidney

• trachea

The lungs are the main part of the _____________ system

• Respiratory

• circulatory

• immune

• skeletal

the _______ controls all the systems in the body

• left lung

• brain

• heart

• liver

the _______ produces bile to break down fats and chemical substances in the body

• liver

• large intestine

• brain

• stomach

how many bones do humans (adults) have?

• 350

• 200

• 206

• 306

__________ acts in relation to taste, mastication, bolus formation, enzymatic digestion, and swallowing

• blood

• mocus

• secretion

• saliva

When we breathe in, we inhale air that is rich in ________

• carbon dioxide

• oxygen

• hydrogen

• sulfur

the immune system protects the body from germs

• true

• false