_________ is expelled when we exhale.

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-5

Is when the blood carries the oxygen to the cells and picks up carbon dioxide that is released on the way back.

• Cellular respiration

• Internal respiration

• External respiration.

Is an organ in the shape of a tube that connects the pharynx with the trachea.

• Lung

• Nose

• Airway

• Larynx

Tiny bags of air found at the end of the bronchial tubes.

• bronchioles

• bronchi

• alveoli

Small conduits that divide the lungs and conduct the air into the alveoli.

• bronchioles

• bronchi

Gases are exchanged here for oxygen in the blood.

• alveoli

• bronchi

• bronchioles

There are _____ stages of respiration.

• 2

• 3

• 4

Tags

NGSS.HS-LS1-7

It involves the nose, pharynx, larynx, trachea, bronchi, lungs and diaphragm.

• External respiration

• Internal respiration

• Cellular respiration

Occurs in the alveoli, where gases are exchanged in the blood.

• External respiration

• Cellular respiration.

• Internal respiration.

Alveoli are surrounded by____

• Bronchioles

• Bronchi

• Capillaries