Airway anatomy Flashcards Preview

Anesthesia Basics > Airway anatomy > Flashcards

Flashcards in Airway anatomy Deck (10):
1

Glossopharyngeal nerve

  • Motor: None
  • Sensory:
    • Posterior 1/3 of tongue
    • Epiglottis
    • Pharynx

2

Vagus nerve - recurrent laryngeal nerve

  • Motor: Larynx (expect cricothyroid)
  • Sensory:
    • Larynx - mucosal surface
    • Trachea - mucosal surface

3

Vagus nerve - internal branch of the superior laryngeal nerve

  • Motor: None
  • Sensory:
    • Epiglottis (dorsal)
    • Vocal cords

4

Vagus nerve - external branch of the superior laryngeal nerve

  • Motor: Cricothyroid
  • Sensory: None

5

Cricothyroid muscle

  • Innervation: External laryngeal nerve (from CN X)
  • Main action(s): Stretches and tenses vocal ligament

6

Thyro-arytenoid muscle

  • Innervation: Recurrent larygneal nerve (from CN X)
  • Main Action(s): Relaxes vocal ligament

7

Posterior crico-arytenoid

  • Innervation: Recurrent larygneal nerve (from CN X)
  • Main Action(s): Abducts vocal folds

8

Lateral crico-arytenoid

  • Innervation: Recurrent laryngeal nerve (from CN X)
  • Main Action(s): Adducts bocal folds (interligamentous portion)

9

Transverse and oblique arytenoids

  • Innervations: Recurrent laryngeal nerve (from CN X)
  • Main Action(s): Adduct arytenoid cartilages (adducting intercartilaginous portion of vocal folds, closing posterior rima glottis)

10

Vocalis

  • Innervation: Recurrent laryngeal nerve
  • Main Action(s): Relaxes posterior vocal ligament while maintaining (or increasing) tension of anterior part