Which of this pa of veebral canal will show secondary curves with concavity backward?
In veebrates, cervical veebrae (singular: veebra) are the veebrae of the neck, immediately below the skull. Thoracic veebrae in all mammalian species are those veebrae that also carry a pair of ribs, and lie caudal to the cervical veebrae.
Cervical
Thoracic
Sacral
Coccyx
Head and neck