Which one of the following is correct description of a certain part of a normal human skeleton ?

Options

A. Parietal bone and the temporal bone of the skull are joined by fibrous joint
B. First vertebra is axis which articulates with the occipital condyles
C. The `9^(th)` and `10^(th)` pairs of ribs are called the floating ribs.
D. Glenoid cavity is a depression to which the thigh bone articulates.

Answer

A

Explanation

Parietal bone and temporal bone of the skull are joined by fibrous joint (immovable joint). First cervical vertebra is atlas. The last two pairs (`11^(th)` and `12^(th)`) of ribs are called flothing ribs. Glenoid cavity is a depression to which humaerus articulates.