60 The Anatomy of a HORSE. Chap. V. 



The firft of the common Pair is call'd the Sternothyieai' 

 deurrit and by fome 'Bronchium, or the Weafand Mufcles : 

 Thefe arife from the upper and inner part of the Breafl- 

 bone, afcending by the fides of the Windpipe to the (hield- 

 like Griftle, where they are inferted. Their Ufe is to draw 

 down the faid Griftle, and fo widen the Chink. 



The fecond Pair, call'd Hyothyreoideum^ arife from the 

 lower fide of the Os Hyoidcs^ and are inferted into the The- 

 Teoid Griftle. Thefe are fliid to ftreighten the Chink of the 

 Larynx, tho* fome affirm they widen it, and that the other 

 Pair contract it. 

 ,, ^ ^ Ti,r r The firft Pair of the proper Mufcles of 



Its Proper Muf- . . n,, ^-, ; -j > • 



^Igf *^ the Larynx, call d Crycothyrcoideiim Jnti- 



cum, becaufe they take their beginning from 



the Ring-fafhion'd Griftle Cricoidcs^ and are implanted in 



the Sides of the Thereoides, which they move obliquely 



downwards, thereby opening the Chink of the Laryjiy:. 



The next Pair, named Crycoa^-ytcstmdmm pojliciim, arife 

 contrary to the former, from the lower and back Part of 

 the Ring-fafhon'd Griftle, and are inferted in the lower 

 End of the Ewer- like Griftle, whereby they raife it upward 

 and backward, to open and widen the Larynx. 



The third or lateral Pair, arifing from the Sides of the 

 Ring-fafhion'd Cartilage, terminate in the Sides of the 

 Ewer- like Griftle, opening ahb the Larynx, by drawing the 

 Griftles obliquely to one Side. 



The fourth Pair are the largeft and ftrongeft of all the 

 proper Mufcles of the Larynx, and arife dole one to ano- 

 ther from the Middle of the hollow part of the (hield-like 

 Griftle, filling that Cavity through its whole Length, and 

 are inferted into the two Sides of the Ewer-like Griftle, af- 

 iifting the former. 



The fifth and laft, called Jryitfnoides, or Claudens fa- 

 cundum, takes its Rife from the hinder Line of the Ewer- 

 Ike Griftle Jrytistioides, and is implanted in the Sides of 

 the fame. This fingle Mufcle helps to ftrengthen th« 

 Throttle, by drawing both Sides of the Ewer- like Griftle 

 together. 



7he Epidottls ^^^ Epiglottis, or Throat- flap, which 

 no Mufde, but covers the Chink of the Larynx, has no 

 in Creatures very diftindt Mufcles, but in thofe Creatures 

 itatcheii: the that chew the Cud ; and flrall therefore be 

 <-^i^d, omitted in this Plage, 



The 



