Podcast
Questions and Answers
Which muscle is responsible for separating the thorax from the abdominal cavity?
Which muscle is responsible for separating the thorax from the abdominal cavity?
- The external intercostals
- The accessory muscles of inspiration
- The phrenic nerves
- The diaphragm (correct)
What is the function of the diaphragm during normal quiet breathing?
What is the function of the diaphragm during normal quiet breathing?
- To increase the thoracic volume (correct)
- To descend into the abdominal cavity
- To contract the external intercostals
- To innervate the phrenic nerves
Which nerves innervate the diaphragm?
Which nerves innervate the diaphragm?
- Phrenic nerves (correct)
- Vagus nerve
- Spinal accessory nerve
- Intercostal nerves
How much can the diaphragm descend during a deep inspiration?
How much can the diaphragm descend during a deep inspiration?
Which muscles are involved in inspiration?
Which muscles are involved in inspiration?
Which muscles are primarily responsible for pulling the rib cage upward and outward during inspiration?
Which muscles are primarily responsible for pulling the rib cage upward and outward during inspiration?
What is the role of the bucket handle movement during inspiration?
What is the role of the bucket handle movement during inspiration?
Which movement of the sternum is likened to the pump handle during inspiration?
Which movement of the sternum is likened to the pump handle during inspiration?
During normal quiet breathing, which muscles are involved in expiration?
During normal quiet breathing, which muscles are involved in expiration?
Which process is passive during normal quiet breathing?
Which process is passive during normal quiet breathing?
Which of the following statements about expiratory muscles during normal quiet breathing is true?
Which of the following statements about expiratory muscles during normal quiet breathing is true?
Which statement accurately describes the involvement of expiratory muscles during normal quiet breathing?
Which statement accurately describes the involvement of expiratory muscles during normal quiet breathing?
Which condition is most likely to involve the activation of accessory muscles of inspiration?
Which condition is most likely to involve the activation of accessory muscles of inspiration?
Which of the abdominal wall muscle does NOT involved in active expiration during exercise and voluntary hyperventilation?
Which of the abdominal wall muscle does NOT involved in active expiration during exercise and voluntary hyperventilation?
What happens to the diaphragm during active expiration?
What happens to the diaphragm during active expiration?
Which muscle contributes the most to the volume of air in the lungs during normal breathing at rest?
Which muscle contributes the most to the volume of air in the lungs during normal breathing at rest?
What is the role of the internal intercostal and transversus thoracis muscles?
What is the role of the internal intercostal and transversus thoracis muscles?
Which muscles assist in active exhalation by depressing the ribs and pushing the relaxed diaphragm into the thoracic cavity?
Which muscles assist in active exhalation by depressing the ribs and pushing the relaxed diaphragm into the thoracic cavity?
Which of the following best explains the drop in intrapleural pressure during inspiration?
Which of the following best explains the drop in intrapleural pressure during inspiration?
What generates the suction called intrapleural pressure in the pleural cavity?
What generates the suction called intrapleural pressure in the pleural cavity?
What is the approximate intrapleural pressure at the end of expiration (at FRC)?
What is the approximate intrapleural pressure at the end of expiration (at FRC)?
During inspiration, how does the intrapleural pressure change compared to the end of expiration?
During inspiration, how does the intrapleural pressure change compared to the end of expiration?
What is the significance of the pressure gradient between alveolar pressure and atmospheric pressure?
What is the significance of the pressure gradient between alveolar pressure and atmospheric pressure?
Which pressure must be lower in order for air to flow from the atmosphere into the alveoli?
Which pressure must be lower in order for air to flow from the atmosphere into the alveoli?
What is the approximate alveolar pressure at the end of expiration?
What is the approximate alveolar pressure at the end of expiration?
Which pressure is usually measured to reflect the intrapleural pressure?
Which pressure is usually measured to reflect the intrapleural pressure?
How is intrapleural pressure transmitted to the balloon-tipped catheter?
How is intrapleural pressure transmitted to the balloon-tipped catheter?
What is the purpose of the increased transpulmonary pressure gradient during inspiration?
What is the purpose of the increased transpulmonary pressure gradient during inspiration?
What happens to the alveoli during inspiration?
What happens to the alveoli during inspiration?
What happens to the alveolar pressure during expiration?
What happens to the alveolar pressure during expiration?
What causes air to flow out of the alveoli during expiration?
What causes air to flow out of the alveoli during expiration?
What is the role of the intrapleural pressure during the respiratory cycle?
What is the role of the intrapleural pressure during the respiratory cycle?
What is the pressure relationship between alveolar pressure (Palv) and atmospheric pressure (Patm) during the end expiration stage?
What is the pressure relationship between alveolar pressure (Palv) and atmospheric pressure (Patm) during the end expiration stage?
What happens to the chest wall and pleural pressure (Pip) during mid-inspiration?
What happens to the chest wall and pleural pressure (Pip) during mid-inspiration?
What is the pressure relationship between alveolar pressure (Palv) and atmospheric pressure (Patm) at the end inspiration stage?
What is the pressure relationship between alveolar pressure (Palv) and atmospheric pressure (Patm) at the end inspiration stage?
What is the pressure relationship between alveolar pressure (Palv) and atmospheric pressure (Patm) during mid-expiration?
What is the pressure relationship between alveolar pressure (Palv) and atmospheric pressure (Patm) during mid-expiration?
Throughout the typical respiratory cycle, what is the pressure in the intrapleural space?
Throughout the typical respiratory cycle, what is the pressure in the intrapleural space?
Which stage of the respiratory cycle has a sub-atmospheric pressure in the alveoli?
Which stage of the respiratory cycle has a sub-atmospheric pressure in the alveoli?
What is the role of the transpulmonary pressure gradient during inspiration?
What is the role of the transpulmonary pressure gradient during inspiration?
