Unit 3: Week 2: Respiratory System Quiz

Which structure is the main site of gas exchange in the lungs?

• Trachea

• Bronchi

• Alveoli

• Diaphragm

The muscle that contracts during inhalation to allow the lungs to expand is the _____.

Ventilation refers to (a)   .

• Gas exchange in the alveoli
• Movement of oxygen in the bloodstre
• Air moving in and out of the lungs
• Cell energy production

Respiration refers to:

• Movement of air in and out of the lungs

• Gas exchange (O₂ and CO₂ movement)

• Breathing fast after exercise

• Cleaning the airway

Tags

NGSS.MS-LS2-3

Match the following processes of gas exchange with their correct descriptions:

• Oxygen moves during internal respiration

• From blood to cells

• Oxygen moves during external respiration

• From alveoli to capillaries

• Air moves upward during exhalation

• From bronchi to trachea

During internal respiration, oxygen moves:

• From cells to blood

• From trachea to bronchi

• From blood to body cells

• From alveoli to the environment

(a)   is the gas that moves from the blood into the alveoli.

• Nitrogen
• Water vapor
• Carbon dioxide
• Oxygen

_____ carries air from the throat down to the bronchi.

Which condition involves inflammation and narrowing of the bronchi, making it hard to exhale?

• Pneumonia

• Asthma

• Bronchitis

• COPD

A patient has fluid-filled alveoli due to pneumonia. Which process is MOST affected?

• Ventilation

• Respiration (gas exchange)

• Digestion

• Blood circulation

Tags

NGSS.HS-LS2-3