The Respiratory System (EXAM 1)
The "C" in COPD stands for
chronic
Functions of the nasal cavity include all of the following except
cooling the air
The conchae
create turbulence in the air to trap particulate matter in mucus
The lungs are divided into lobes by structures called
fissures
After a quiet expiration, the amount of air in your lungs is called the
functional residual capacity.
Expiratory movements are produced by contraction of the ________ muscle(s).
internal intercostal
Absorption of O2 from blood and release of CO2 from tissue cells is known as
internal respiration.
The process by which dissolved gases are exchanged between the blood and interstitial fluids is
internal respiration.
Boyle's law states that gas volume is
inversely proportional to pressure
Higher brain centers that alter the activity of the respiratory centers include all of the following except the
pons
The respiratory defense system is important for all of the following reasons except
providing gas exchange
Which of the following systems is responsible for gas exchange?
respiratory
The respiratory membrane of the gas exchange surfaces consists of
simple squamous epithelium.
Which of the following would be greater?
the percent of oxygen saturation of hemoglobin when the temperature is 20 degrees centigrade
Henry's law states that
the volume of gas that will dissolve in a solvent is proportional to the partial pressure of that gas.
When the diaphragm and external intercostal muscles contract,
the volume of the thorax increases.
The visible and palpable prominence on the throat known as the Adam's apple is part of the
thyroid cartilage.
The airway that connects the larynx to the bronchi is the
trachea.
The sites of gas exchange within the lungs are the
alveoli
Air remaining in the conducting portion of the respiratory system that does not reach the alveoli is known as
anatomic dead space
A period in which breathing has stopped, followed by a forceful expulsion of air, is termed
apnea
Prolonged deep inspirations can result from stimulating the ________ center.
apneustic
If the fluid bond between the parietal and visceral pleura is broken and the lung collapses, the resulting condition is termed
atelectasis.
Which structure leads to the middle ear?
4
The most important chemical regulator of respiration is
carbon dioxide
The beating of the cilia of the respiratory passages in the direction of the pharynx forms the
mucus escalator.
The nasal cavity is divided into left and right portions by the
nasal septum
Identify the structure labeled "7."
oropharynx
________ is the amount of air that you can inhale above the resting tidal volume.
Inspiratory reserve volume
What does not happen to a carbon dioxide molecule once it enters the bloodstream?
It binds to heme groups in hemoglobin.
Which of the following is false about the pharynx?
It is shared by the integumentary and respiratory systems.
Which of the following is the best explanation for the C shape of the tracheal cartilages?
Large masses of food can pass through the esophagus during swallowing.
Which of the following statements about bronchioles is true?
Sympathetic action causes bronchodilation
Which of the following factors would increase the amount of oxygen discharged by hemoglobin into peripheral tissues?
decreased pH
The vocal folds are located within the
larynx
