Respiratory System — Flashcards

Flashcard 141: Complete sheet of mucus is cleared into the pharynx every _____ min.

Answer: 10-20

Flashcard 142: SP-_____ - carries out the regulation of the feedback uptake of surfactant by the type II alveolar epithelial cells that secrete it.

Answer: A

Flashcard 143: Most potent stimulus for respiration is _____

Answer: CO2

Flashcard 144: Which surfactant protein carries out the organization of SP-B and SP-C into the surfactant layer?

Answer: SP-A

Extra: Surfactant consists of phospholipids (mainly DPPC) and four surfactant proteins: - **SP-A and SP-D:** Hydrophilic proteins (collectins) primarily involved in innate immunity and host defense. - **SP-B and SP-C:** Hydrophobic proteins essential for the spreading and stabilization of the surfactant film to reduce surface tension. **SP-A** specifically carries out the organization of SP-B and SP-C into the surfactant layer and is required for the formation of tubular myelin.

Flashcard 145: Breathing in a bag technique relieves _____ in hyperventilation syndrome

Answer: hypocapnia

Flashcard 146: Nicotine paralyzes the _____ on the surfaces of the respiratory epithelial cells

Answer: cilia

Flashcard 147: _____ generates the rhythm for automated breathing.

Answer: Pre-Botzinger complex

Flashcard 148: What is the cause of death in wet drowning?_____

Answer: Disruption of pulmonary surfactant

Flashcard 149: Type _____ failure, also called as hypoxia with hypercapnea, is because of the inability to eliminate carbon dioxide effectively.

Answer: II

Flashcard 150: Mucus blanket moves at a speed of _____ mm/min

Answer: 10–20 mm/min