What is the inner spongy part of a bone called?

What is the inner spongy part of a bone called?

Cancellous bone
Cancellous bone, also called trabecular bone or spongy bone, light, porous bone enclosing numerous large spaces that give a honeycombed or spongy appearance. The bone matrix, or framework, is organized into a three-dimensional latticework of bony processes, called trabeculae, arranged along lines of stress.

What is a compact bone?

Compact bone, also called cortical bone, dense bone in which the bony matrix is solidly filled with organic ground substance and inorganic salts, leaving only tiny spaces (lacunae) that contain the osteocytes, or bone cells. Both types are found in most bones.

What is the end of a bone called?

The central tubular region of the bone, called the diaphysis, flares outward near the end to form the metaphysis, which contains a largely cancellous, or spongy, interior. At the end of the bone is the epiphysis, which in young people is separated from the metaphysis by the physis, or growth plate.

Is Osteon compact bone?

Compact bone consists of closely packed osteons or haversian systems. The osteon consists of a central canal called the osteonic (haversian) canal, which is surrounded by concentric rings (lamellae) of matrix.

Why is compact bone so strong?

Compact bone is the heaviest, hardest type of bone. It needs to be very strong as it supports your body and muscles as you walk, run, and move throughout the day. About 80% of the bone in your body is compact. It makes up the outer layer of the bone and also helps protect the more fragile layers inside.

What is a depression in a bone called?

Fossa – A shallow depression in the bone surface.

Can blood turn into bone?

In the rare disease fibrodysplasia ossificans progressiva (FOP), a mutation in the Alk2 gene results in the formation of bone in soft tissues.

What two bones make red blood cells?

Most blood cells are made in your bone marrow. This process is called haemopoiesis. In children, haemopoiesis takes place in the long bones, like the thighbone (femur). In adults, it’s mostly in the spine (vertebrae) and hips, ribs, skull and breastbone (sternum).

What is osteon in compact bone?

Compact bone consists of closely packed osteons or haversian systems. The osteon consists of a central canal called the osteonic (haversian) canal, which is surrounded by concentric rings (lamellae) of matrix. These blood vessels interconnect, by way of perforating canals, with vessels on the surface of the bone.

Is trabeculae found in compact bone?

Compact bone tissue is composed of osteons and forms the external layer of all bones. Spongy bone tissue is composed of trabeculae and forms the inner part of all bones.

What kind of tissue is found at the end of a bone?

Subchondral tissue. The smooth tissue at the ends of bones, which is covered with another type of tissue called cartilage. Cartilage is the specialized, gristly connective tissue that is present in adults. It’s also the tissue from which most bones develop in children.

What is the outer shell of the bone called?

The tough, thin outer membrane covering the bones is called the periosteum. Beneath the hard outer shell of the periosteum are tunnels and canals through which blood and lymphatic vessels run to carry nourishment for the bone.

Which is the thickest layer of bone in the body?

Cortical Bone. This layer is hard and thick. When you see a skeleton, you’re looking at mostly cortical bone. You can think of it like a hard shell, like a turtle has. It’s job is to protect body parts underneath it and hold up muscles around it.

Where are most of the bones in the body located?

More than half of the bones in your body are actually located in your hands and feet. These bones are attached to many little muscles that give you very exact control over how you move your fingers and feet.