CHAPTER I.. The Gross Anatomy of the Horse.

THE GROSS ANATOMY OF THE HORSE.

BONES OF THE HEAD—BONES OF THE TRUNK 17 THE SPINAL COLUMN—BONES OF THE THORAX 17-19 BONES OF THE PELVIS—BONES OF THE LIMBS 19-21 JOINTS—MUSCLES—TENDON SHEATHS 21-24

THE FOOT. =A. The Bones of the Foot= 24 The Cannon—The Long Pastern—The Sesamoid Bones—The Short Pastern—The Pedal Bone— The Navicular Bone 24-28 =B. The Articulations of the Foot= 28 I. THE FETLOCK-JOINT 28 The Suspensory Ligament 29 The Inferior Sesamoid Ligament 30 II. THE CORONARY JOINT 31 III. THE PEDAL ARTICULATION (COFFIN JOINT) 31 =C. The Locomotory Organs of the Foot= 32 The Anterior Extensor Tendon of the Phalanges— The Perforatus Tendon—The Perforans Tendon 32-35 =Mucous Bursæ and Tendon Sheaths= 35 =Altering the Relative Tension of the Flexor Tendons and Suspensory Ligament of the Fetlock-Joint= 36 =D. The Elastic Parts of the Foot= 38 The Lateral Cartilages—The Plantar Cushion 39, 40 =E. The Blood-Vessels and Nerves= 41 The Arteries of the Foot—The Veins of the Foot— The Nerves of the Foot 41-44 =F. The Protective Organs of the Foot= 44 (a) THE HAIR-SKIN 44 1. The Epidermis 45 2. The Dermis 45 3. The Subcutaneous Tissue 45 (b) THE HOOF-SKIN, OR PODODERM 45, 46 1. The Perioplic Band 47 2. The Coronary Band 47 3. The Fleshy Wall 48 The Fleshy Leaves (Podophyllous Tissue) 48, 49 4. The Velvety Tissue of the Sole 49 5. The Velvety Tissue of the Frog 49 (c) THE HORN CAPSULE OR HOOF 50-53 The Wall 50-53 The Bars 51, 52 The Layers of the Wall: 1. The Periople. 2. The Middle or Protective Layer. 3. The Leafy Layer (Keraphyllous Layer) 53-55 The Sole 55, 56 The Frog 57, 58 The Minute Structure of the Horn 58 Hard and Soft Horn 59