Which one of the following is a skull bone?

Options

A. Coracoid
B. Arytenoid
C. Atlas
D. Pteiygoid

Answer

To determine which of the given options is a skull bone, we will analyze each option step by step.

**Step 1: Analyze the first option - Coracoid**
- The coracoid is a small hook-like structure located on the scapula (shoulder blade).
- It is not a bone of the skull.
- **Conclusion**: Coracoid is NOT a skull bone.

**Step 2: Analyze the second option - Arytenoid**
- Arytenoid refers to a pair of small, three-sided pyramids located in the larynx (voice box).
- These are involved in the function of the vocal cords but are not part of the skull.
- **Conclusion**: Arytenoid is NOT a skull bone.

**Step 3: Analyze the third option - Atlas**
- The atlas is known as the first cervical vertebra, which supports the skull and allows for the nodding motion of the head.
- While it is closely related to the skull, it is not classified as a skull bone.
- **Conclusion**: Atlas is NOT a skull bone.

**Step 4: Analyze the fourth option - Pateguitis**
- Pateguitis (likely a misspelling of "pterygoid") refers to bones associated with the skull.
- The pterygoid bones are part of the sphenoid bone, which is a skull bone.
- **Conclusion**: Pateguitis is a skull bone.

**Final Answer**: The correct answer is option 4 (Pateguitis).

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