Respiratory System Quiz

What is the primary gas inhaled during external respiration?

• Carbon dioxide

• Oxygen

• Nitrogen

• Helium

What is another name for the nostrils?

• Nasal septum

• Anterior nares

• Nasal cavity

• Conchae

What separates the nasal cavities from the mouth cavity?

• The palatine bones and maxilla

• The tongue and teeth

• The nasal septum and nostrils

• The uvula and tonsils

What lines the mucous membrane in the nose?

• Cilia (hairs)

• Teeth

• Skin cells

• Blood vessels

What does the nose do to inhaled air?

• It freezes it.

• It warms and moistens it.

• It evaporates it.

• It compresses it.

What is trapped by the cilia and mucous membrane in the nose?

• Water and salt.

• Dust, pollen, bacteria, and foreign matter.

• Light and sound.

• Vitamins and minerals.

How many pairs of tonsils are part of the lymphatic system in the pharynx?

• 1 pair

• 2 pairs

• 3 pairs

• 4 pairs

What is the primary function of the thyroid cartilage?

• To protect the trachea

• To allow longer vocal cords

• To cover the larynx

• To support the epiglottis

What type of tube is the trachea described as?

• Rigid and bony

• Smooth and muscular

• Soft and flexible

• Rough and spiky

What would happen if the trachea was blocked?

• Breathing would stop

• Digestion would stop

• Blood flow would stop

• Heartbeat would stop