Classify the bones in the following diagram according to their shape.
c. _____

Verified step by step guidance

1. Step 1: Identify the bone labeled (c) in the diagram, which is a section of the skull.
2. Step 2: Recall the classification of bones by shape: long bones, short bones, flat bones, irregular bones, and sesamoid bones.
3. Step 3: Understand that flat bones are typically thin, flattened, and often curved, providing protection and broad surfaces for muscle attachment. The skull bones, including the section labeled (c), fall into this category.
4. Step 4: Confirm that the bone labeled (c) is a flat bone because it is part of the skull, which protects the brain and has a broad, flat shape.
5. Step 5: Conclude that the bone labeled (c) should be classified as a flat bone.

Key Concepts

Bone Classification by Shape

Bones are classified into four main shapes: long, short, flat, and irregular. This classification helps in understanding their function and location in the body. For example, long bones like the humerus support weight and facilitate movement, while flat bones like the parietal bone protect internal organs.

Long Bones

Long bones are characterized by a shaft and two ends, primarily composed of compact bone. They are longer than they are wide and function mainly in support and movement. The humerus, shown in the diagram as (a), is a typical example of a long bone.

Irregular Bones

Irregular bones have complex shapes that do not fit into other categories. They often have specialized functions such as protection of nervous tissue or providing multiple anchor points for muscles. The vertebra (d) in the diagram is an example of an irregular bone.