Which one of the following is the correct description of a certain part of a normal human skeleton?
(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 9th and 10th pairs of ribs are called the floating ribs
(d) Glenoid cavity is a depression to which the thigh bone articulates
Correct option is (a) Parietal bone and the temporal bone of the skull are joined by fibrous joint
Immovable / fixed / fibrous joints are present between the skull bones. So, between parietal bone and the temporal bone of the skull are joined by fibrous joint. Other statements can be corrected as First cervical vertebra is atlas not axis. The 11th and 12th pairs of ribs are called floating ribs. Glenoid cavity is located at the end of scapula close to coracoid process.