Menu Close

What is the structure of the long bone?

What is the structure of the long bone?

A long bone is a bone that has a shaft and 2 ends and is longer than it is wide. Long bones have a thick outside layer of compact bone and an inner medullary cavity containing bone marrow. The ends of a long bone contain spongy bone and an epiphyseal line.

What is the structure and function of a long bone?

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 structure of a long bone is the only place on a long bone that is not covered by the periosteum?

The periosteum is a membranous tissue that covers the surfaces of your bones. The only areas it doesn’t cover are those surrounded by cartilage and where tendons and ligaments attach to bone. The periosteum is made up of two distinct layers and is very important for both repairing and growing bones.

What are the 4 parts of the long bone?

Examples of long bones include the femur, tibia, radius and ulna.

  • Epyphysis. Every long bone is capped with wide areas on each end which are called epiphyses.
  • Diaphysis. The largest part of any long bone is the long cylindrical middle, called the diaphysis.
  • Metaphysis.
  • Medullary Cavity.

What are the 6 parts of a long bone?

Terms in this set (7)

  • diaphysis. straight shaft of long bone.
  • epiphysis. widened end of long bone.
  • periosteum. thick, fibrous membrane that covers the outside of a bone; anchors tendons & ligaments; contains blood vessels, nerves, & lymph vessels.
  • spongy bone.
  • compact bone.
  • epiphyseal plate.
  • medullary cavity.

Why are long bones cylindrical?

A long bone is one that is cylindrical in shape, being longer than it is wide. Long bones function as levers; they move when muscles contract.

What bones are classified as long bones?

Long Bones They consist of a long shaft with two bulky ends or extremities. They are primarily compact bone but may have a large amount of spongy bone at the ends or extremities. Long bones include bones of the thigh, leg, arm, and forearm.

Why are long bones called long bones?

Long bones are so-called because they are longer than they are wide. Long bones in the arm include the humerus, radius, ulna, metacarpals, and phalanges. Long bones of the leg include the femur, tibia, fibula, metatarsals, and phalanges.

What is the difference between epiphysis and diaphysis of a long bone?

A long bone has two parts: the diaphysis and the epiphysis. The diaphysis is the tubular shaft that runs between the proximal and distal ends of the bone. The wider section at each end of the bone is called the epiphysis (plural = epiphyses), which is filled with spongy bone.

Posted in Blog