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Multiple Choice
Which of the following structures is part of the axial skeleton in the head and neck region?
A
Humerus
B
Clavicle
C
Mandible
D
Scapula
Verified step by step guidance
1
Step 1: Understand the axial skeleton. The axial skeleton consists of bones that form the central axis of the body, including the skull, vertebral column, ribs, and sternum. It does not include bones of the appendicular skeleton, which are associated with limbs and girdles.
Step 2: Identify the head and neck region. The head and neck region includes structures such as the skull, mandible (lower jaw), and cervical vertebrae.
Step 3: Evaluate the options provided. The humerus, clavicle, and scapula are part of the appendicular skeleton, as they are associated with the limbs and girdles. The mandible, however, is part of the axial skeleton and is located in the head region.
Step 4: Confirm the mandible's role in the axial skeleton. The mandible is the lower jawbone and is a key structure in the skull, which is part of the axial skeleton. It plays a role in chewing and forming the lower part of the face.
Step 5: Conclude that the mandible is the correct answer because it is part of the axial skeleton in the head and neck region, while the other options belong to the appendicular skeleton.