II. Alimentary Canal 221 1. Mouth 221 Glands of the Mouth 223 Teeth 224 Tongue 226 Muscles of the Tongue 228 Soft Palate 229 Muscles of the Soft Palate 230 2. Pharynx 231 Muscles of the Pharynx 232 3. Œsophagus 234 4. Stomach 234 5. Small Intestine 236 6. Large Intestine 237 7. Liver, Pancreas, and Spleen 239 III. Respiratory Organs 243 1. Nasal Cavity 243 2. Larynx 246 Cartilages of the Larynx 247 Muscles of the Larynx 249 3. Trachea 251 4. Lungs 252 Thyroid Gland 254 Thymus Gland 254 IV. Urogenital System 255 1. Excretory Organs 255 Kidneys 255 Ureter 256 Bladder 256 (Suprarenal Bodies) 257 2. Genital Organs 257 _A._ Male 257 _B._ Female 263 Muscles of the Urogenital Organs, Rectum, and Anus 268 _a._ Muscles Common to the Male and Female 268 _b._ Muscles Peculiar to the Male 271 _c._ Muscles Peculiar to the Female 272 THE CIRCULATORY SYSTEM 274 I. The Heart 274