THE EXTERIOR OF THE HORSE 



while allowing ample liberty to the tougue it restricts in some measure 



the range of its action. 



ANTERIOR SURFACE OF THE HEAD 



This division of the head comprises — 1, the forehead; 2, the nose; and 

 3, its two orifices or nostrils. 



The Forehead. — The forehead forms the ujjper part of the head 

 in front, extending from the poll and ears, down to a line drawn 



Fig. 5. — Median Section throug-li a Horse's Head, showing Soft Parts 



A, Lamellar Portion of Ligamentum Nuchae. 



B, Funicular Portion of Ligamentum Nuchas. 



c, Brain in Section. D, Spinal Cord. E, Frontal Sinus. 



F, Anterior Meatus 1 



G, Middle Meatus Y of Nose. 

 H, Posterior MeatusJ 



I, Superior or Maxillary Turbinated Bone. 



J, Inferior Turbinated Bone. K, Body of Lower Jaw. 

 Ji, Hard Palate, showing Transverse Ridges in Section. 

 M, Tongue. O, Section through Hyoid Bone. 



P, Soft Palate. Q, Epiglottis. 



R, Opening of the Eustachian Tube into the Pharynx. 

 s. Cartilaginous Rings forming the Trachea or Windpipe. 

 T, Oesophagus or Gullet. 



across the face between the inner corners of the eyes. On either 

 side it is limited by the ear, the temple, the supra-orbit or " hollow 

 of the eye ", the orbital ridge, and the eye itself. The U23per portion 

 forms the vault of the cranium, and encloses the brain; the lower forms 

 the front wall of two hollow cavities termed the " frontal sinuses ". High 

 up it is somewhat rounded, being covered by two fleshy muscles. The 

 lower part is protected only by skin. The forehead is partly covered by 

 the "forelock", to which reference has already been made. The forehead 



