776 



SENSE ORGANS AND SKIN OF THE OX 



it is continuous without demarcation with the periople of the bulb. The periophc 

 matrix bears relatively long papillae. The coronary matrix is much less developed 

 than in the horse and its papillae are short.' The sensitive laminae are much nar- 

 rower and are more numerous than in the horse; secondary laminae are not present. 

 The matrix of the sole is not marked off behind from that of the periople; its 

 papillae are very small and close together. The matrix of the bulbs is separated 

 from the flexor tendon by a mass of elastic, fatty tissue, which is analogous with 

 the plantar cushion of the horse. The papillae here are long and often compound. 

 The accessory digits bear short conical horn capsules which resemble in a 

 general way those of the chief digits, and have a similar matrix, which covers one 

 or two nodular vestigial phalanges. From these a fibrous band descends obliquely 



Lateral extensor tendon 

 Metacarpal hone 



Metacarpo-phalangeal articnlafion 



First phalanx 

 Lateral extensor tendon 

 Common extensor tendon 

 Proximal interphalangeal joint 

 Second phalanx _ 



Periople 

 Coronary matrix 

 Third phalanx 

 Wall of hoof 



Upper pouch 

 of metacarpo- 

 -phalangeal 

 joint capside 

 Superficial 

 Jlexor tendon 

 Suspensory 

 ligament 

 Deep flexor 

 tendon 

 Superficial 

 flexor tendon 

 Annular 

 ligament 

 Proximal 

 Sesamoid 

 Prucial 

 ligament 

 Small claw 



'Annidar ligament 

 Pla7itar cushion 

 Upper pouch of capside 

 of distal interphalangeal 

 joint 

 ■Navicular bone 



'Navicular bursa 



Fro. 586. — Sagittal Skction of Distal Part of Fore Limb of Ox. 



on the volar aspect of each chi(^f digit and is attached below to the distal phalanx 

 and sesamoid bones, sending fil)ers also to the elastic pad of the heel. 



Tlic homs (Cornua) inclose the horn processes of the frontal bones (except in 

 the lulled breeds). They vary very greatly in size, form, and curvature. The root 

 or l)ase of the horn (Radix cornus) has a thin edge which is continuous with the 

 epidermis. It is covered by a thin layer of soft horn similar to the periople of the 

 hoof of the horse. Near the root the horn is encircled by variable rings. Toward 

 the apex (Apex cornus) the thickness of the horn increases till it becomes practically 

 a solid mass. The horn consists mainly of tubes which are very close together, 

 except at the rings, wiiere there is more intertubular horn. The matrix of the horn 

 (Matrix cornus) is united to the horn process by periosteum which is traversed by 

 numerous blood-vessels. The matrix at the root of the horn is thick and bears. 



