Term
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Definition
The larynx is a 5-7 cm long structure.
upper boundary starts at the tip of the epiglottis, opposite the 3rd to 4th cervical vertebra
Its lower end is at the lower border of the cricoid cartilage. This lies opposite the 6th cervical vertebra. |
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Term
| Cricothyroidostomy or cricothyrotomy: |
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Definition
an incision through the skin and cricothyroid ligament/membrane and insertion of a tracheotomy tube into the trachea for relief of acute respiratory obstruction.
When making a skin incision, care must be taken not to injure the anterior jugular veins, which lie near the midline of the neck. |
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Term
Cricothyroid
Nerve and Action on Vocal Cord
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Definition
Nerve: External laryngeal
Action- Tenses: adducts; elongates |
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Term
Choking and Heimlich Maneuver |
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Definition
Food stuck in rima glottidis (apperature between vocal folds).
Compression of abdomen expels air from lungs to dislodge the food. |
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Term
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Definition
posterior cricoarytenoid muscle
Abduction of vocal ligaments rima glottidis is opened (widened) by rotating the vocal process of the arytenoids cartilage laterally NEED IT FOR RESPIRATION
Recurrent laryngeal |
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Term
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Definition
a direct result of restricted joint motion.
Due to RA (rumatoid arthritis), gout, laryngeal trauma.
Symptoms: mild dysphonia, acute airway compromise. |
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Term
| Intrinsic Muscles of Larynx |
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Definition
move the parts of the larynx – changing the length & tension of the vocal folds and size and shape of the rima glottidis (abduct & adduct vocal cords)
all are innervated by the vagus nerve –
all by recurrent laryngeal n. –EXCEPT cricothyroid m., supplied by external laryngeal n.
ONE MUSCLE IN ABDUCTING |
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Term
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Definition
| Shortening (relaxation) and adduction of vocal ligaments |
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