Irregular bones are bones with complex shapes. These bones may have short, flat, notched, or ridged surfaces. Examples of irregular bones are the vertebrae, hip bones, and several skull bones. Sesamoid bones are small, flat bones and are shaped similarly to a sesame seed. The patellae are sesamoid bones.

Where are irregular bones?

Irregular Bones Have Complex Shapes

For example, the vertebrae, irregular bones of the vertebral column, protect the spinal cord. The irregular bones of the pelvis (pubis, ilium, and ischium) protect organs in the pelvic cavity.

What is irregular bones in human skeleton?

Irregular Bones. Bones that are neither long, short, nor flat are considered irregular bones. The shapes of these bones provide very specific functions. The facial bones and the bones of the spinal column, the vertebrae, are all irregular bones. These bones have complicated shapes that are unique to their function.

How many irregular bones are there in the body?

The irregular bones are: the vertebræ, sacrum, coccyx, temporal, sphenoid, ethmoid, zygomatic, maxilla, mandible, palatine, inferior nasal concha, and hyoid.

Which bones are flat bones?

Examples of flat bones
Frontal bone. This bone forms your forehead and the upper portion of your eye sockets.Parietal bones. You have two parietal bones on either side of your head. Occipital bone. This bone forms the back of your skull. Nasal bones. Lacrimal bones. Vomer bone.

What are the 4 main types of bones?

There are four different types of bone in the human body:
Long bone – has a long, thin shape. Short bone – has a squat, cubed shape. Flat bone – has a flattened, broad surface. Irregular bone – has a shape that does not conform to the above three types.

Which of the following is an example of irregular bone?

The irregular bones are: the vertebrae, sacrum, coccyx, temporal, sphenoid, ethmoid, zygomatic, maxilla, mandible, palatine, inferior nasal concha, and hyoid.

What bones are long bones?

The long bone category includes the femora, tibiae, and fibulae of the legs; the humeri, radii, and ulnae of the arms; metacarpals and metatarsals of the hands and feet, the phalanges of the fingers and toes, and the clavicles or collar bones. The long bones of the human leg comprise nearly half of adult height.

Which bones are short bones?

Short bones are roughly cube shaped with vertical and horizontal dimensions approximately equal. They consist primarily of spongy bone, which is covered by a thin layer of compact bone. Short bones include the bones of the wrist and ankle.