New York State Basic Emergency Medical Technician (EMT-B) Practice Exam

What is the correct sequence and number of vertebrae sections?

1. Cervical (7), thoracic (5), lumbar (12), sacral (5), coccygeal (4)

2. Cervical (5), thoracic (12), lumbar (7), sacral (4), coccygeal (5)

3. Cervical (12), thoracic (4), lumbar (7), sacral (5), coccygeal (5)

4. Cervical (7), thoracic (12), lumbar (5), sacral (4), coccygeal (3)

The correct answer is: Cervical (7), thoracic (5), lumbar (12), sacral (5), coccygeal (4)

The correct sequence and number of vertebrae sections is based on the anatomical structure of the human spine. The vertebral column is generally divided into five regions: cervical, thoracic, lumbar, sacral, and coccygeal. Beginning at the top, the cervical region consists of 7 vertebrae. This segment supports the head and allows for a wide range of motion. Following this is the thoracic region, which contains 12 vertebrae, providing attachment points for the ribs and playing a crucial role in protecting the heart and lungs. Next is the lumbar region, which has 5 vertebrae. These vertebrae are the largest and bear the most weight, providing stability to the lower back. The sacral region consists of 5 fused vertebrae, which create the sacrum, an essential component that connects the spine to the pelvis. Finally, the coccygeal region, typically containing 4 vertebrae (which can be fused), forms the coccyx or tailbone, providing support for a person when sitting. This arrangement—cervical (7), thoracic (12), lumbar (5), sacral (5), and coccygeal (4)—is standard in