What are the 3 layers of the bones?

There are three layers in your bones. The compact bone is the hard, white outer layer. The spongy bone is the hard layer with many holes. The bone marrow is the center layer where blood vessels run through.

What are the layers of bone tissue called?

The outside of the bone consists of a layer of connective tissue called the periosteum. The outer shell of the long bone is compact bone, below which lies a deeper layer of cancellous bone (spongy bone), as shown in the following figure.

What are the two main layers of bone?

Bone tissue Periosteum – the dense, tough outer shell that contains blood vessels and nerves. Compact or dense tissue – the hard, smooth layer that protects the tissue within.

What is smallest bone in human body?

At 3 mm x 2.5 mm, the “stapes” in the middle ear is the smallest named bone in the human body. The shape of a stirrup, this bone is one of three in the middle ear, collectively known as the ossicles.

What is the metaphysis?

The metaphyses (singular: metaphysis) are the wide portions of long bones and the regions of the bone where growth occurs. The metaphysis is located between the diaphysis and epiphysis.

Which is biggest bone in human body?

femur
The longest bone in the human body is called the femur, or thigh bone.

Which is longest bone in human body?

The femur is one of the most researched bones in the human anatomy and forensic medicine. As the longest bone in the human body, it is well preserved in skeletal remains.

How do we classify bones?

The four principal types of bones are long, short, flat and irregular. Bones that are longer than they are wide are called long bones. They consist of a long shaft with two bulky ends or extremities.

What is metaphysis bone?

The metaphysis is the region where the epiphysis joins the diaphysis; in a growing bone this corresponds to the calcified layer of the epiphyseal plate together with the interdigitating bone (see Figure 4.19). In most long bones, one end usually fuses with the shaft before the other end.

What happens during ossification?

The cartilage cells die out and are replaced by osteoblasts clustered in ossification centres. Bone formation proceeds outward from these centres. This replacement of cartilage by bone is known as endochondral ossification.