Question

Which of the following bones is classified as part of the axial skeleton?

a. Lunate
b. Rib 11
c. Clavicle
d. Hip bone
e. All of the above are part of the axial skeleton
f. Only answer choices A and B are part of the axial skeleton

Answer 1

Among the provided options, 'b. Rib 11' is the only bone classified as part of the axial skeleton. The axial skeleton includes the rib cage, which encompasses the ribs.

Step-by-step explanation:

The question asks which of the following bones is classified as part of the axial skeleton. The axial skeleton forms the central axis of the body and includes the bones of the skull, ossicles of the middle ear, the hyoid bone of the throat, vertebral column, and the thoracic cage (rib cage). Considering the options provided:

• Lunate - not part of the axial skeleton
• Rib 11 - part of the thoracic cage, which is part of the axial skeleton
• Clavicle - part of the pectoral girdle, which is the appendicular skeleton
• Hip bone - part of the pelvic girdle, which is the appendicular skeleton

Out of the options listed, only the Rib 11 is part of the axial skeleton. Hence, the correct answer is 'b. Rib 11'.