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

Verified step by step guidance

1. Step 1: Identify the bone labeled 'd' in the diagram. It is the bone located at the bottom right, which shows a cluster of small bones in the wrist area.
2. Step 2: Understand the classification of bone shapes: Long bones (longer than wide, mostly in limbs), Short bones (cube-shaped, mostly in wrists and ankles), Flat bones (thin and flat, like skull bones), and Irregular bones (complex shapes, like vertebrae).
3. Step 3: Analyze the shape of the bone 'd'. Since it consists of multiple small, cube-like bones grouped together in the wrist, it fits the description of short bones.
4. Step 4: Confirm that short bones provide support and stability with little movement, which matches the function of the wrist bones (carpals).
5. Step 5: Conclude that the bone labeled 'd' should be classified as a short bone based on its shape and location.

Key Concepts

Bone Classification by Shape

Bones are classified into four main shapes: long, short, flat, and irregular. Long bones are longer than they are wide, like the femur. Short bones are roughly cube-shaped, like the bones in the wrist. Flat bones are thin and often curved, such as the parietal bone. Irregular bones have complex shapes, like vertebrae.

Examples of Bone Types in the Human Skeleton

Understanding specific examples helps in classifying bones. The parietal bone is a flat bone protecting the brain. The vertebra is an irregular bone forming the spinal column. The femur is a long bone supporting weight and movement. Carpal bones in the wrist are short bones that provide stability and flexibility.

Anatomical Context for Bone Identification

Recognizing the location and function of bones aids classification. Long bones are typically found in limbs for leverage. Flat bones protect organs and provide surface for muscle attachment. Irregular bones have specialized functions, like protecting the spinal cord. Short bones provide support and stability with limited movement.