Because we expose our feet to potential injury in our daily lives by walking, we have all experienced pains in the feet at one time or another. There are many common causes of foot pains, such as blisters and corns. There are also less common causes of foot pain, such as sciatica and osteomyelitis.
The trachea, or windpipe (figs. 21-1 and 21-2), which has cervical and thoracic parts, extends from the inferior end of the larynx (C6 vertebra) to its point of bifurcation (between T5 and 7 vertebral level). It is about 9 to 15 cm in length. The trachea descends anterior to the esophagus, enters the superior mediastinum, and divides into right and left main bronchi. The trachea is a median structure but, near its lower end, deviates slightly to the right, resulting in the left main bronchus crossing anterior to the esophagus. Owing to the translucency of the air within it, the trachea is usually visible above the arch of the aorta in radiographs.
The thoracic cavity houses the heart and lungs, while the majority of the digestive system is located within the abdominal cavity. Above the diaphragm, you are already familiar with the heart and its vessels. The trachea is visible as a ringed tube in the throat area.The cartilage of the trachea makes this structure stiff and easy to find. The esophagus is located just behind and slightly to the side. It is a soft structure and may blend in with the vessels and tissue of that area.The probe in this photo is lifting the esophagus.ts path runs parallel to the inferior vena cava. Just below the diaphragm is the largest organ in the cat, the liver. It has 4 lobes and a very obvious presence in the abdominal cavity. Embedded within the liver, but easy to spot, is the gall bladder.