The thoracic spine is part of your spinal column and is composed of 12 bones that are stacked one upon another. The thoracic spine is located between your cervical and lumbar spines, and it serves ...

In modern humans, the thoracic structure tapers slightly more at the bottom. At the same time, however, the shorter Neanderthal stature somewhat compressed the height of the rib cage—meaning ...

Save guides, add subjects and pick up where you left off with your BBC account. The air that enters the nasal cavity flows down the trachea. The trachea has a number of adaptations: cartilage ...