1 Cuneiform cartilage. Cartílago cuneiformis. Variably small cartilage beneath a small group of glands in the aryepiglottic fold. D

2 Cuneiform tubercle. Tuberculum cuneiforme. Prominence in the aryepiglottic fold caused by the cuneiform cartilage. If the cartilage is absent, it can also be produced by glands. B D

3 Epiglottis. Elastic cartilage shaped like a shoehorn. B C E

4 Stalk of epiglottis. Petiolus epiglottidis. Downward pointing end of the epiglottic cartilage that is attached to the thyroid cartilage by connective tissue. A D

5 Epiglottic tubercle. Tuberculum epiglotticum. Small prominence at the posterior surface of the mucosa above the stalk. B

6 Epiglottic cartilage. Cartilago epiglottica. Skeleton of epiglottis consisting of elastic cartilage. A C D

7 Thyroepiglottic ligament. Lig. thyroepiglotti-cum. Ligament attaching the stalk of the epiglottis to the posterior surface ofthe thyroid cartilage. A D

8 Hyoepiglottic ligament. Lig. hyoepiglotticum. Ligament between the hyoid and epiglottis. C

9 Corniculate tubercle. Tuberculum cornicu-latum. Mucosa-covered prominence over the corniculate cartilage just above the apex of the arytenoid cartilage. B D

10 Laryngeal musculature. Musculi laryngis. B C D E

11 [[M. aryepiglotticus]]. Now the aryepiglottic part of the arytenoid muscle. See p. 21 a. B D

12 M. cricothyroideus. o: Anterolateral aspect of cricoid cartilage. i: Interiorly at outer and inner surfaces of the thyroid cartilage lamina. A: Tenses vocal ligament by lifting the cricoid cartilage forward and tilting back the lamina and the arytenoid cartilage. I: Superior laryngeal nerve (different innervation than other intrinsic laryngeal muscles). C E

13 Straight part. Pars recta. Anterior, somewhat more steeply coursing fibers. C

14 Oblique part. Pars obliqua. Posterior, more horizontally coursing fibers. C

15 Posterior cricoarytenoid muscle. M. cri-coarytenoideus posterior. o: Posterior surface of cricoid cartilage. i: Muscular process of arytenoid cartilage. A: By swinging the vocal process upward and outward, it opens the rima glottidis. It is the only abductor of the vocal folds. I: Recurrent laryngeal nerve. B D

16 Ceratocricoid muscle. [M. ceratocricoideus]. Anatomic variant. o: Inferior horn of thyroid cartilage. i: Inferior margin of cricoid cartilage. I: Recurrent laryngeal nerve. B

17 Lateral cricoarytenoid muscle. M. cricoaryte-noideus lateralis. o: Upper lateral margin of cri-coid cartilage. i: Anteriorly at muscular process of arytenoid cartilage and adjacent area. A: Synergist in closing of rima glottidis. I: Recurrent laryngeal nerve. D

Feneis, Pocket Atlas of Human Anatomy © 2000 Thieme

18 M. vocalis. o: Inner surface of thyroid cartilage near the midline. i: Vocal process and oblong fovea of arytenoid cartilage. A: By its tension it alters the intrinsic vibrations of the vocal cord. I: Recurrent laryngeal nerve. E Thyroepiglottic muscle. [[ M. thyroepiglotti-cus]]. Now the thyroepiglottic part of the thyroarytenoid muscle. See p. 20 D Thyroarytenoid muscle. M. thyroarytenoideus. o: Anterior inner surface of thyroid cartilage. i: Muscular process and lateral surface of aryte-noid cartilage. A: Synergist in closure of rima glottidis. I: Recurrent laryngeal nerve. D E 20a Thyroepiglottic part. Pars thyroepiglottica. o: Anterior, inner surface of thyroid cartilage. i: Epiglottis and quadrangular membrane. I: Recurrent laryngeal nerve. D See p. 19. 21 Oblique arytenoid muscle. M. arytenoideus obliquus. o: Posterior surface of muscular process. i: Apex of contralateral arytenoid cartilage. A: Draws the arytenoid cartilages closer together. Synergist in closure of rima glottidis. I. Recurrent laryngeal nerve. B 21 a Aryepiglottic part. Pars aryepiglottica. o: Apex of arytenoid cartilage. i: Margin of epiglottis. Foundation of aryepiglottic fold. A: Depresses the epiglottis. See 11. Transverse arytenoid muscle. M. arytenoideus transversus. o: Posterior surface of arytenoid cartilage. i: Same surface of contralateral aryte-noid cartilage. A: Approximates arytenoid cartilages. Synergist in closure of rima glottidis. I: Recurrent laryngeal nerve. B Laryngeal cavity. Cavitas laryngis. E Laryngeal inlet (aditus). Aditus laryngis. Entrance into larynx between the epiglottis, ary-epiglottic folds and interarytenoid notch. B E Aryepiglottic fold. Plica aryepiglottica. Mu-cosal fold over the aryepiglottic muscle. It extends from the apex of the arytenoid cartilage to the lateral margin of the epiglottis. B D Interarytenold notch. Incisura interaryte-noidea. Mucosa-covered slit between the two apices of the arytenoids. B Vestibule of larynx. Vestibulum laryngis. Upper part of laryngeal cavity extending as far as the vestibular [ventricular] folds. E Rima vestibuli. Interval between the two vestibular folds. E

Vestibular (ventricular) fold. Plica vestibularis [ventricularis]. Fold produced by the vestibular ligament. It lies between the laryngeal ventricle and vestibule. E 29 a Intermediate laryngeal cavity. Cavitas laryngis intermedia. Space between the vestibular and vocal folds.

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