Question

The vertebral formula of human adult is:

• A. $C_7{T}_{12}{L}_5{S}_{5}C{d}_1$
• B. $C_7{T}_{12}{L}_{\left(5\right)}{S}_{\left(5\right)}C{d}_5$
• C. $C_7{T}_{12}{L}_5{S}_{\left(5\right)}C{d}_{\left(4\right)}$
• D. $C_7{T}_{12}{L}_5{S}_{\left(5\right)}C{d}_4$

Answer 1

The correct option is C $C_7{T}_{12}{L}_5{S}_{\left(5\right)}C{d}_{\left(4\right)}$

The vertebral column is a part of axial skeleton and is also called spine or backbone. It protects the spinal cord by covering it. The human vertebral column is made up of 33 vertebrae, out of which, the upper 24 vertebrae are articulating and are separated from each other by inter-vertebral discs and the lower nine are fused in adults, 5 of them are in sacrum and 4 are in the tailbone.
So, cervical vertebrae(C) are 7, 12 thoracic vertebra (T), 5 lumbar (L), 5 sacral fused (S) and 4 coccygeal fused (Cd).
Therefore, the correct answer is option C- $C_7{T}_{12}{L}_5{S}_{\left(5\right)}C{d}_{\left(4\right)}$