Question

Describe the parts labelled in human skull and select the correct option

A) a-temporal bone; b-parietal bone; c-sphenoid bone; d-frontal bone; e-zygomatic bone; f-occipital bone

B) a-frontal bone; b-zygomatic bone; c-occipital bone; d-sphenoid bone; e-parietal bone; f-temporal bone

C) a-sphenoid bone; b-occipital bone; c-zygomatic bone; d-parietal bone; e-frontal bone; f-temporal bone

D) a-sphenoid bone; b-zygomatic bone; c-occipital bone; d-frontal bone; e- temporal bone; f- parietal bone

E) a-zygomatic bone; b-occipital bone; c-parietal bone; d-frontal bone; e-sphenoid bone; f-temporal bone

Answer 1

Hint: The human skull is a bony structure which forms the head. The skull is made up of numerous flat bones which are fused together. It supports the facial structure and forms the protective cavity for the brain. The brain consists of 22 bones in which the cranium protects the brain.

Complete answer:
The human Skull is the protective bony case which protects the brain. It contains many flat bones.
The parts of the skull given in the question are:

Sphenoid bone: It is present in the neurocranium and is unpaired. The sphenoid is situated in the middle of the skull towards the front.

Occipital bone: It is the main part of the skull called the backbone of the skull. It protects the back part of the brain.

Zygomatic bone: It is the cheek bone which is present laterally to the nasal bone and lies below the orbit.

Parietal bone: It is the roof of the cranium which is the superior bone of the skull.

Frontal bone: It is called the front bone of the cranium which is present in the region of forehead.

Temporal bone: It is the lateral bone of the cranium which is present inner to the ear. It houses the structure of the ear.

Hence, the correct answer is option (C).

Note: The sphenoid, occipital, parietal and temporal are the cranial base bones. They articulate with the atlas, the facial bones and the jaw bones. These bones fit together by the help of unique joints called sutures.