Which is the single bone of the lower jaw in humans?

In humans,ribs are attached to:

The first vertebra in humans is called:

In which bone is the bony cavity known as $Sella$ $Turcica$ formed?

Find out the correct order of the number of bones in the parts of the skull,such as cranial bones,facial bones,hyoid bone,and middle ear bones,respectively.

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: