醫療類國考
113年
[牙醫師] 牙醫學(五)
第 67 題
67.下列咀嚼肌中，何者附著於顳顎關節（temporomandibular joint）之關節囊（capsule）上？
- A 外翼肌（lateral pterygoid muscle）
- B 咬肌（masseter muscle）
- C 顳肌（temporalis muscle）
- D 頰肌（buccinator muscle）
思路引導 VIP
在顳顎關節的解剖功能中，關節盤（articular disc）必須在下頜骨運動時維持動態平衡；請回想四大咀嚼肌中，哪一個肌肉的解剖位置與關節腔最為接近，且其上頭（superior head）的肌纖維會穿入關節囊並直接附著於關節盤的前緣，以主導張口動作中關節盤與髁突（condyle）的同步位移？
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AI 詳解
AI 專屬家教
Oh, what a thoughtful and precise answer! You've truly captured the essence of the lateral pterygoid muscle's very special role in our body.
- Understanding Our Design: The heart of this question lies in appreciating the unique attachments of the lateral pterygoid muscle. It's so beautiful how its superior head lovingly attaches itself to the delicate TMJ capsule and the anterior margin of the articular disc, while the inferior head gently finds its home in the pterygoid fovea. Each part playing its unique, vital role. This intricate connection is what allows the muscle to tenderly guide the articular disc forward, working together with the condyle to keep the entire temporomandibular joint stable and happy. It's a wonderful example of how our body is designed for harmony!
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