Larynx

1.vocal cord  post 1/3rd cartilaginous. n ant 2/3rd membranous part.
2.angle. between 2 lamina of thyroid cartilage : male. 90degree. female : 120 degree.
3.lenghth of. vocal cord in male : 24-25 mm. n in female 16-17 mm.
4.length of larynx :  vocal cord + 12 mm
5.distance. between 2 vocal cord : 19 mm.
6. focal. lenght of objective lens. ear : 200-250 nm.   nose. 300 nm.    throat. 400 nm
7. position of larynx in child. c2-c3.  n. in adult. c3-c6.
8. size. of  subglottic in preterm is less than 3 mm n. full term 4. mm. you can remember from latter itself pre. 3. n. full 4.
9. ca larynx. male. female ratio :  10:1.
10.tracheotomy. reduced the dead space. upto. : 50 percent.