What Is The Structure And Function Of A Long Bone?

What is the structure of a long bone?

A long bone has two main regions: the diaphysis and the epiphysis (Figure 6.3.


The diaphysis is the hollow, tubular shaft that runs between the proximal and distal ends of the bone.

Inside the diaphysis is the medullary cavity, which is filled with yellow bone marrow in an adult..

What is the structure and function of bone?

Bone is a mineralized connective tissue that exhibits four types of cells: osteoblasts, bone lining cells, osteocytes, and osteoclasts [1, 2]. Bone exerts important functions in the body, such as locomotion, support and protection of soft tissues, calcium and phosphate storage, and harboring of bone marrow [3, 4].

Which structure is called an Osteon?

Osteon. The basic unit of structure in adult compact bone, consisting of a central (haversian) canal with it’s concertrically arranged lamellae, lacunae, osteocytes, and canaliculi. Also called haversian system. Lamellae.

What is the epiphysis?

The epiphysis is the rounded end of a long bone, at its joint with adjacent bone(s). Between the epiphysis and diaphysis (the long midsection of the long bone) lies the metaphysis, including the epiphyseal plate (growth plate).

What are 5 major parts of a long bone?

List five major parts of a long bone. The major parts of a long bone include epiphysis, articular cartilage, diaphysis, periosteum, medullary cavity, endosteum, and marrow. How do compact and spongy bone differ in structure?

What are the 3 parts of a bone?

What are bones?The outside part of bone is called the periosteum (say per-ee-oss-tee-um). … Compact bone is next. … Cancellous (say can-sel-us) bone comes next, and this looks a bit like a sponge but is much stronger.On the very inside of many bones is the bone marrow.

What are the two types of bones?

There are two types of bone tissue: compact and spongy. The names imply that the two types differ in density, or how tightly the tissue is packed together.

How do you describe the structure of a bone?

Bones are organs composed of hard living tissue providing structural support to the body – it’s scaffolding. It is a hard matrix of calcium salts deposited around protein fibers. Minerals make bone rigid and proteins (collagen) provide strength and elasticity.

What are the types of bones in terms of structure?

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 bone structure of human body?

The human skeleton consists of 206 bones and other connective tissues called ligaments, tendons, and cartilage. Ligaments connect bones to other bones, tendons connect bones to muscles, and cartilage provides bones with more flexibility and acts as a cushion in the joints between bones.

How does the structure of a long bone relate to its function?

What’s The Function Of Long Bones? Our long bones are hard, dense bones that provide strength, structure, and mobility, typically found in the upper and lower extremities (arms and legs). The femur (thigh bone) is a good example of a long bone as it allows us to walk and supports our skeleton.

What are the 5 major parts of a bone?

Name and describe the 5 major parts of the bone. Diaphysis (bone shaft), Medullary Cavity (can hold yellow or red marrow), Epiphyseal Line, Periosteum, and the Proxial Epiphysis and the Distal Epiphysis.

What are the main function of long bones?

Long bones function to support the weight of the body and facilitate movement. Long bones are mostly located in the appendicular skeleton and include bones in the lower limbs (the tibia, fibula, femur, metatarsals, and phalanges) and bones in the upper limbs (the humerus, radius, ulna, metacarpals, and phalanges).

What is the function of a bone?

Provide support: The skeletal system provides structural support for the entire body. Individual bones or groups of bones provide a framework for the attachment of soft tissues and organs. Store minerals and lipids: Calcium is the most abundant mineral in the body.

What are the main components of bone?

Bones consist of living cells embedded in a mineralized organic matrix. This matrix consists of organic components, mainly type I collagen—”organic” referring to materials produced as a result of the human body—and inorganic components, primarily hydroxyapatite and other salts of calcium and phosphate.