Arrange the stages of events that take place during coughing in the correct sequence.
Understand the Problem
The question is asking to arrange the stages of events that occur during coughing in the correct sequence based on the provided descriptions of each stage.
Answer
1. Irritant enters, 2. Sensory receptors stimulated, 3. Vagus nerve impulses, 4. Deep inspiration, 5. Glottis closure, 6. Muscle contraction, 7. Glottis opens, 8. Air expelled.
Stage 1: Irritant enters the trachea, Stage 2: Sensory receptors stimulated by irritant, Stage 3: Impulses sent by the vagus nerve to the respiratory centre, Stage 4: Deep inspiration, Stage 5: Closure of the glottis, Stage 6: Contraction of abdominal and respiratory muscles, Stage 7: Sudden opening of the glottis, Stage 8: Air expelled from the respiratory tract under pressure.
Answer for screen readers
Stage 1: Irritant enters the trachea, Stage 2: Sensory receptors stimulated by irritant, Stage 3: Impulses sent by the vagus nerve to the respiratory centre, Stage 4: Deep inspiration, Stage 5: Closure of the glottis, Stage 6: Contraction of abdominal and respiratory muscles, Stage 7: Sudden opening of the glottis, Stage 8: Air expelled from the respiratory tract under pressure.
More Information
Coughing involves coordinated actions of various muscles and structures to effectively clear irritants from the respiratory tract.
Tips
Confusing the order of muscle contraction and glottis actions affects understanding
Sources
- Anatomy and neuro-pathophysiology of the cough reflex arc - pmc.ncbi.nlm.nih.gov
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