How many thoracic vertebrae are there in the human body?

The human body contains 12 thoracic vertebrae, which are labeled T1 through T12. These vertebrae are significant because they articulate with the ribs, forming the thoracic skeletal structure that protects vital organs such as the heart and lungs. The thoracic region of the spine is distinct from the cervical and lumbar regions due to its unique alignment and functional characteristics, contributing to the overall stability and flexibility of the torso. The arrangement of these vertebrae also plays a crucial role in posture and movement. Understanding the number and role of thoracic vertebrae is important for those studying anatomy and physiology.