Ventilation - Video Tutorials & Practice Problems
Ventilation: Boyle’s Law
Ventilation Example 1
Why does air rush into the lungs during an inhale or inspiration?
Increase in atmospheric pressure.
Diaphragm moves upward.
Decrease in air pressure in the lungs.
Contraction of abdominal muscles.
During expiration, which action contributes to the movement of air out of the lungs during eupnea, or quiet breathing?
Contraction of intercostal muscles.
Relaxation of the diaphragm.
Contraction of the abdominal muscles.
Expansion of the ribcage.
Pressure Changes During Ventilation
Ventilation Example 2
At the end of inspiration, the intrapulmonary pressure is equal to ____________.
Atmospheric pressure.
Transpulmonary pressure.
Intrapleural pressure.
Both A & C are correct.
When the volume of air in the lungs is the greatest:
The intrapulmonary pressure is equal to the atmospheric pressure.
The intrapulmonary pressure is at its maximum.
The intrapulmonary pressure is at its minimum.
The intrapulmonary pressure is equal to the intrapleural pressure.
Muscles of Ventilation
Ventilation Example 3
Which muscle is used for inspiration during both eupnea and forced breathing?
Rectus abdominus.
Sternocleidomastoid.
Serratus anterior.
External intercostal muscles.
Which muscle is likely to be contracting while blowing up a balloon?
Rectus abdominis.
Sternocleidomastoid.
Diaphragm.
Scalenes.
Do you want more practice?
Your Anatomy & Physiology tutors
- Cary hyperventilates for several minutes before diving into a swimming pool. After he enters and begins swimmi...
- The contraction of the diaphragm and the external intercostal muscles begins inspiration. What happens, in ter...
- a. Differentiate clearly between minute ventilation and alveolar ventilation rate. b. Which provides a more ac...
- What is the significance of (a) Boyle's law, to the process of respiration?
- When the diaphragm and external intercostal muscles contract, (a) exhalation occurs, (b) intrapulmonary pre...
- Which of the following does not affect the efficiency of pulmonary gas exchange?a. The surface area of the res...
- Which of the following statements about pulmonary ventilation is false?a. Normal expiration requires the use o...
- Match each term with the correct definition ____Airway resistance ____Surface tension ____Surfacta...
- If you swallow a large bite of food without properly chewing it first, you will feel discomfort during ventila...
- As a result of a stroke, Mrs. Minnick's swallowing is uncoordinated. What detrimental effect might this have o...
- Predict what would happen to the tidal volume and inspiratory reserve volume if the phrenic nerves were severe...
- The detergent-like substance that keeps the alveoli from collapsing between breaths because it reduces the sur...
- Explain what would happen to the pressure inside a cylinder if you decreased its volume, according to Boyle's ...
- Multiple Choice More than one choice may apply. Which of the following represents intrapleural pressure? a. ...
- a. Define hyperventilation. b.If you hyperventilate, do you retain or expel more carbon dioxide? c. What effec...
- What happens to the metabolic rate of skeletal muscle tissue during exercise? What waste products are produced...
- Under ordinary circumstances, the inflation reflex is initiated by a. noxious chemicals, b. the ventral respi...
- Multiple Choice More than one choice may apply. During inspiration, intrapulmonary pressure is a. greater ...
- Billy's normal alveolar ventilation rate (AVR) during mild exercise is 6.0 L/min. While at the beach on a warm...
- Multiple Choice More than one choice may apply. Which of the following changes will accompany the loss of lun...
- How does pulmonary ventilation differ from alveolar ventilation, and what is the function of each type of vent...
- A member of the 'Blues' gang was rushed into an emergency room after receiving a knife wound in the left side ...
- Describe the functional relationships between volume changes and gas flow into and out of the lungs.
- When the inspiratory muscles contract, a. the size of the thoracic cavity increases in diameter, b. the size ...