Distribution of Elastic Cartilage in the Arytenoids and its Physiologic Significance

Abstract

An investigation of the distribution of the elastic cartilage in the arytenoids was performed on excised human adult and newborn larynges. The distribution of elastic cartilage in the arytenoids was investigated histologically in two serial sections: Horizontal and coronal. The behavior of the elastic cartilage portion of the arytenoids was investigated histologically under the conditions of adduction and abduction. The results are summarized as follows. 1) Elastic cartilage is found not only at the tip of the vocal process but at the superior portion of the arytenoid cartilage from the vocal process to the apex. 2) This phenomenon is observed at birth. 3) The vocal process bends at the elastic cartilage portion during adduction and abduction. The sides of the arytenoids come into contact mainly at the elastic cartilage portion. 4) Elastic cartilage appears to play an important role in the physiologic functioning of the arytenoid.

Keywords

arytenoid cartilage elastic cartilage larynx vocal process

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References

Leeson

Paparo

. Textbook of histology. 5th ed. Philadelphia: WB Saunders, 1985: 386–8.

Sorokin

. The respiratory system. In: Weiss

, ed. Histology. Cell and tissue biology. 5th ed. London: Macmillan Press, 1983: 797–803.

Kelly

Wood

Enders

. Bailey's textbook of microscopic anatomy. 18th ed. Baltimore: Williams and Wilkins, 1984: 623–5.

Bloom

Fawcett

. A textbook of histology. 10th ed. Philadelphia: WB Saunders, 1975: 746–7.

Hirano

Kurita

Kiyokawa

Sato

, Posterior glottis. Morphological study in excised human larynges. Ann Otol Rhinol Laryngol 1986; 95: 576–81.