Human Gas Exchange

Which respiratory structure is supported by rings of cartilage?

• trachea

• alveolus

• bronchiole

• pharynx

Which sequence correctly indicates the branching pattern of the human respiratory system?

• trachea -> bronchi -> bronchioles -> alveoli

• trachea -> bronchioles -> bronchi -> alveoli

• alveoli -> trachea -> bronchioles -> bronchi

• alveoli -> bronchioles -> trachea -> bronchi

Which structure in humans is lined with ciliated mucous membrane, is supported by cartilaginous rings, and functions as a passageway for air?

• esophagus

• alveolus

• pharynx

• trachea

Which diagram best illustrates the function of an alveolus?

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Tags

NGSS.MS-LS1-2

Which part of the human respiratory system is correctly paired with a description of its structure?

• alveolus – microscopic sac containing rings of cartilage and ciliated membranes

• pharynx – cavity lined with flagellated mucous membranes

• bronchiole – small branching tubule lacking cartilaginous rings

• trachea – thin, moist membrane surrounded by capillaries

In the human respiratory system, bronchioles directly connect the

• trachea and pharynx

• bronchi and alveoli

• nasal cavity and trachea

• epiglottis and larynx

The division of the trachea forms

• main bronchi

• alveoli

• lungs

• nose

Which of the following is NOT a feature of alveoli

• Have a large surface area

• Have thin walls

• Have extensive blood supply

• Have a muscular wall

Which of the following correctly describes the functioning of the human breathing system?

• The bronchus cannot change its size.

• The nasal cavity has hairs to trap dust.

• The diaphragm muscle contracts during inhalation.

• The lung expels air through its muscular contraction.

Surfactant...

• decreases the surface tension of fluid in the alveoli

• increases the energy required to keep the lungs inflated

• makes the lungs tend to collapse

• traps foreign particles that enter the lungs