The box-like bony structure that protects the brain is called:

Which elements are most abundant in the formation of bones?

Which of the following statements are correct with reference to the human endoskeleton?
$A$. Human skull is monocondylic.
$B$. The joint between any two adjoining vertebrae is a cartilaginous joint.
$C$. In human beings,the number of cervical vertebrae is seven.
$D$. All ribs except the last $2$ pairs are bicephalic.
$E$. The occipital bone of the skull is articulated with the atlas vertebra.
Choose the correct answer from the options given below:

The number of true ribs in humans is ........ . (in $pairs$)

Match the following columns:

Column-$I$	Column-$II$ (Number of bones)
$P$. Face	$I$. $6$
$Q$. Ear ossicles	$II$. $14$
$R$. Cranium	$III$. $1$
$S$. Hyoid bone	$IV$. $8$

The number of occipital condyles in man is/are: