Which of the following pairs is incorrectly matched regarding the human skeleton?
Which of the following pairs is incorrectly matched regarding the human skeleton?
Cranial bones - 8 in number; form the cranium.
Vertebral column - 26 serially arranged vertebrae in an adult.
Ribs - 12 pairs; the first seven pairs are true ribs.
Each limb - 32 bones, including the girdle bone.
Solution
$Each \text{ limb (forelimb or hindlimb) is made of 30 bones.
The pectoral and pelvic girdles are separate structures that articulate with the limbs but are not counted as part of the limb bones themselves.}$
$\begin{aligned}
&\text{Humerus (1) + Radius (1) + Ulna (1) + Carpals (8) + Metacarpals (5) + Phalanges (14)} \\
&= 30 \text{ bones in the forelimb.}
\end{aligned}$
$\begin{aligned}
&\text{Femur (1) + Tibia (1) + Fibula (1) + Patella (1) + Tarsals (7) + Metatarsals (5) + Phalanges (14)} \\
&= 30 \text{ bones in the hindlimb.}
\end{aligned}$
$\text{(NCERT Ed. 2025-26, 11th, Page No. 226)}$