Question

In: Anatomy and Physiology

13. Naya is a healthy 45 year old female, 5 foot 2 inches in height, and...

13. Naya is a healthy 45 year old female, 5 foot 2 inches in height, and weighs 140 lbs.

          What intrinsic laryngeal muscles and laryngeal nerves are activated when she:

  1. Coughs
  2. Swallows
  3. Breathes quietly
  4. Says “Tubs” at 350 Hz. List each phoneme separately. Next to each phoneme, state the intrinsic laryngeal muscle(s) and laryngeal nerve(s) activated

Solutions

Expert Solution

1)Cough :

Muscles

Intrinsic laryngeal muscles activated in cough are

Thyroaretynoid

lareral cricoatetynoid

interatetynoid

These have adductor action i.e; these muscles closes the

glottis and activated during cough and then vocal cords contract and shut the larynx

vocal cords next relaxes and the glottis opens by abduction muscle(posterior cricoatetenoid muscle)and releases air

Nerves :recurrent laryngeal nerve

2)Swallow:

muscles:During swallowing both extrinsic and intrinsic muscles cooperate to prevent food from entering glottis.

during swallowing intrinsic muscles closes the glottis are: addcution muscles - thyroaretynoid,lateral cricoarytenoid,interarytenoid

Nerves:superior and recurrent laryngeal nerves

3:Breathes quietly:

Muscles:posterior cricoarytenoid opens the glottis and helps during quiet breathing.

posterior cricoarytenoid is a intrinsic laryngeal nucle that shows abduction action(open the glottis) and helps in entry of ait through larynx

Nerves: recurrent laryngeal branch of vagus nerve


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