Human Body Systems 2

Which system includes the mouth, nose, trachea, diaphragm, and lungs?

• respiratory system

• digestive system

• cardiovascular system

• nervous system

The _________ carries air down your throat

• trachea

• esophagus

• bronchi

• neuron

The _________ branch off of the trachea and into your lungs

• bronchi

• alveoli

• trachea

• capillaries

The _________ is the involuntary muscle responsible for making your respiratory system work

• diaphragm

• heart

• stomach

• tongue

Being spongy helps make this organ more efficient

• lungs

• heart

• brain

• small intestine

________ are the millions of tiny air sacs in your lungs

• trachea

• alveoli

• bronchi

• capillaries

Which organs perform mechanical digestion?

• mouth

• stomach

• small intestine

• large intestine

• liver

Which organs perform chemical digestion?

• mouth

• stomach

• small intestine

• large intestine

• liver

This organ uses teeth to tear apart food and saliva to break down sugar molecules

• mouth

• esophagus

• stomach

• small intestine

• liver

The ________ is the muscular tube that carries food down your throat

• esophagus

• trachea

• small intestine

• large intestine