Respiratory System

Which structures filter and moisten air as it passes through the human respiratory system?

• Cilia and mucous membranes

• alveoli and cartilage rings

• diaphragm and bronchioles

• epiglottis and bronchi

Which statement best describes the structure indicated by letter x in the diagram below.

• It is kept open by rings of cartilage

• It is lined with a mucous membrane that filters, moistens, and warms the air

• It is made up of alveoli

• It contained ciliated bronchioles to filter the incoming air

What will most likely happen when food is in the trachea?

• The food will interfere with the passage of air to the alveoli

• The food will undergo emulsification and deamination

• The food will be moved down to the stomach by peristalsis.

• The food will be completely digested as a result of enzyme action.

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

When humans exhale, air passes from the trachea directly into the

• bronchioles

• alveoli

• bronchi

• pharynx

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 statement best describes the function of the respiratory passageways of a human?

• they permit digestive end-products to make contact with body cells.

• they permit exchange between the external atmosphere and the circulatory system.

• they transport gaseous cellular wastes from body cells to the lungs for excretion.

• they regulate the amount of ammonia and salt dissolved in body fluids.

a humidifier is a device that adds moisture to dry air. Which part of the human respiratory system has the same function?

• nasal cavity

• epiglottis

• diaphragm

• cartilage rings

The human trachea is a passageway that remains open due to the presence of

• bones

• skeletal muscles

• ligaments

• cartilaginous rings

Which structures in the naval cavity remove some bacteria and dust from outside air before it enters the lungs?

• rings of cartilage

• lymph nodes

• thin, moist alveoli

• ciliated mucous membranes