The main site of gas exchange is the ________.
alveoli
The loudness of a person's voice depends on the ________.
force with which air rushes across the vocal folds
Which of the following maintains the patency (openness) of the trachea?
C-shaped cartilage rings
Select the correct statement about the pharynx.
The pharyngotympanic (auditory) tube drains into the nasopharynx.
The larynx contains ________.
thyroid cartilage
Which respiratory-associated muscles would contract if you were to blow up a balloon?
internal intercostals and abdominal muscles would contract
Which of the choices below is NOT a role of the pleural?
assist in blood flow to and from the heart because the heart sits between the lungs
The respiratory membrane is a combination of ________.
alveolar and capillary walls and their fused basement membranes
The nose serves all the following functions except ________.
as the direct initiator of the cough reflex
Which of the following is responsible for holding the lungs to the thorax wall are _________.
surface tension from pleural fluid and negative pressure in the pleural cavity
Most inspired particles such as dust fail to reach the lungs because of the ________.
ciliated mucous lining in the nose
Which of the disorders below is characterized by destruction of the walls of the alveoli producing abnormally large air spaces that remain filled with air during exhalation?
emphysema
Moistens area increase surface area
nasal conchae
air-filled cavities lined with mucous membrane, lighting the skull
paranasal sinuses
3 regions of pharynx
nasopharynx, oropharynx, laryngopharynx
function of epiglottis
closes off the trachea during swallowing
What creates your voice?
Vocal folds
Bacteria or other particulate debris contained within inspired air are removed or destroyed by _______.
mucus, vibrissae, conchae
Breathing air through the nose serves multiple functions. What function would be increased when breathing dry air?
Humidifying the air
Surface area in the nasal cavity is increased by the presence of _______.
conchae
Occasionally food or liquids will "go down the wrong pipe," initiating a cough reflex. Which structural barrier has been breached if this happens?
epiglottis
Men tend to have deeper voices than women because their vocal cords _______.
are longer and thicker
The most violent coughing is initiated when foreign objects contact the _________ of the trachea.
carina
Which of the following is not part of the conducting zone?
alveolar ducts
The respiratory membrane is composed of:
the alveolar membrane, the capillary wall, and their fused basement membrane
Loss of lung elasticity and destruction of alveolar walls is termed _______.
emphysema
The _________ zone includes the alveoli, while the ______ zone includes the trachea.
respiratory; conducting