Laryngeal cartilage forming complete circle: (LQ)
Ref. BOC, Vol III, 4th/ed p 240; Ohingra Sth/ed p 299, 6th/ed p 282; Mohan Bansal p 62
Thyroid cartilage Cricoid cartilage Epiglottic cartilage Arytenoid cartilage Corniculate cartilage Cuneiform cartilage
V shaped on cross section. Has 2 lamina right and left which are placed at an angle of 900 in males and 1200 in females Ring shaped, (it is the only complete ring present in the air passages)
Leaf shaped in adults, omega shaped in infants and neonates
Also know: The thyroid, cricoid and basal parts of arytenoid cartilages are made up of hyaline cartilage. They ossify after the age of 25 years. The other cartilages, e.g. epiglottis, corniculate, cuneiform and processes of the arytenoid are made of elastic cartilage and do not ossify.