Respiratory System

What is structure B?

• Vocal cords
• Larynx
• Pharynx
• Trachea

What is structure G?

• Vocal cords
• Larynx
• Pharynx
• Trachea

What is structure H?

• Vocal cords
• Larynx
• Pharynx
• Trachea

Which substances are produced during respiration?

• carbon dioxide and red blood cells
• water and oxygen
• carbon dioxide and water 
• oxygen and red blood cells

Where in the respiratory system does gas exchange occur?

• in the trachea
• in the heart
• in the pharynx
• in the alveoli

Tags

NGSS.HS-LS2-5

The role of the respiratory system is to bring what substance into the body?

• red blood cells
• water
• oxygen
• carbon dioxide

The dome-shaped muscle that plays an important role in breathing is the

• alveolus.
• larynx.
• bronchus.
• diaphragm.

What happens to cause air to be exhaled from the lungs?

• The rib muscles contract and move outward.
• The chest cavity expands and grows larger.
• The lungs contract and then expand.
• The diaphragm relaxes and moves upward.

Over time, smoking can irritate the breathing passages, which may become clogged with mucus. This condition is called

• emphysema.
• heart attacks.
• lung cancer.
• bronchitis.

A tumor that develops in the lungs may be a sign of

• heart disease.
• emphysema.
• bronchitis.
• lung cancer.

Tags

NGSS.MS-LS3-1