Practical topic 10

Question 1

Give the extrisic muscluature of the larynx

Answer 1

• M. Thyrohyoideus
• M. hyoepiglotticus
• M. sternothyroideus

Together with the hyoid muscles, they move the entire larynx, especially during swallowing

Question 2

Give the intrinsic muscluature of the larynx

Answer 2

• M. Cricothyroideus
• M. cricoarytenoideus dorsalis
• M. cricoarytenoideus lateralis
• M. thyroarytenoideus
• M. arytenoideus transversus
• M. vocalis,
• M. ventricularis

Pass from one laryngeal cartilage to another and move them in relation to one another

Functions: Principally in phonation and reflex closing of the glottis

Question 3

M. Cricothyroideus

Answer 3

• From cricoid cartilage to the thyroid lamina
• Separate thyroid lamina from cricoid and arytenoid cartilages
• A: Tenses vocal fold indirectly →Drawing ventral parts of cricoud and thyroid cartilage togeth

Question 4

M. cricoarytenoideus dorsalis

Answer 4

• O: Dorsolateral surface of cricoid cartilage
• I: Processus muscularis on the lateral surface of arytenoid cartilage
• A: Rotates arytenoid → Vocal process moves lateral à open glottis

Question 5

M. cricoarytenoideus lateralis

Answer 5

• O: Lateral surface of cricoid cartilage
• I: Arytenoid cartilage btw. cricoarytenoideus dorsalis and vocalis mm.
• A: Pull the moscular processes ventrally → Close the glottis

Question 6

M. thyroarytenoideus

Answer 6

• Gives rose to vocalis muscle medially and ventricularis rostrally
• O: Internal midline of thyroid cartilage
• I: Arytenoid cartilage
• A: Relax vocal fold, constrict glottis

Question 7

M. arytenoideus transversus

Answer 7

Pull the arytenoid cartilage together

Question 8

Nn. Laryngis, parts

Answer 8

• N. laryngealis cranialis
  
  • Enters in the opening of the thyroid cartilage
• N. laryngealis caudalis
  
  • Enters the larynx under the caudal edge of m. cricopharyngeus

Question 9

Give the different cartilages

Answer 9

• Epiglottic
• Thyroid
• Cricoid
• Arytenoid

Question 10

Answer 10

1. Thyroid cartilage
2. Epiglottic cartilage
3. Arythenoid cartilage
4. Cricoid cartilage
5. M. cricoarythenoideus lateralis
6. M. cricoarythenoideus dorsalis
7. Os basohyoideus
8. Os thyroideus
9. Lig. vocalis
10. M. vocalis
11. Ventriculus larygneus

Question 11

Answer 11

1. Thyroid cartilage
2. Cricoid cartilage
3. M. cricothyroideus
4. Trachea
5. Os. basihyoideus
6. Os ceratohyoideus

• * Lig. cricothyroideus

Question 12

Answer 12

1. Epiglottic cartilage
2. Arytenoid cartilage
3. Aryepiglottic fold
4. Thyroid cartilage
5. Cricoid cartilage
6. M. cricoarytenoideus dorsalis
7. Trachea
8. Root of the tongue (radix linguae)