The U-shaped bone present at the base of the buccal cavity is called(a) Hyoid(b) Maxilla(c) Mandible(d) Zygomatic

The correct answer is (a) Hyoid.
• The hyoid bone is a U-shaped bone located at the base of the buccal (mouth) cavity, in the neck. It plays a crucial role in supporting the tongue and providing attachment for muscles involved in swallowing and speech.
• The hyoid is unique because it does not directly connect to other bones but is suspended by ligaments and muscles, making it crucial for its role in supporting the tongue and facilitating proper swallowing.
Why the other options are incorrect:
• (b) Maxilla:
The maxilla is the upper jawbone, which holds the upper teeth and forms part of the nasal cavity and eye sockets. It is not U-shaped and is not located at the base of the buccal cavity.
• (c) Mandible:
The mandible is the lower jawbone and is responsible for holding the lower teeth. While it is a U-shaped bone, it is not at the base of the buccal cavity but rather forms the lower part of the mouth.
• (d) Zygomatic:
The zygomatic bone, also known as the cheekbone, forms part of the structure of the face and is not located at the base of the buccal cavity.
The hyoid bone is the correct answer, as it is U-shaped and located at the base of the buccal cavity.