Definition

Noun: * Long Bone: In the limbs of vertebrate animals, a long cylindrical bone that contains marrow. It is a type of bone characterized by its elongated shape, a central cavity (medullary cavity) containing bone marrow, and distinct ends (epiphyses) that often form joints.

Usage

The term "long bone" is a specific anatomical term used in biology, medicine, and zoology to classify bones based on their shape and structure. It is typically used in descriptive, scientific, or educational contexts.

Examples

• The femur and humerus are classic examples of long bones in the human body.
• A fracture in a long bone can be serious due to the risk of damaging the marrow and blood vessels.
• The study compared the growth plates in the long bones of different mammalian species.

Advanced Usage

• "Diaphysis": The technical term for the long, cylindrical shaft of a long bone.
  • The fracture occurred along the diaphysis of the tibia.
• "Epiphysis": The technical term for the rounded end of a long bone, which is part of a joint and is separated from the shaft by the growth plate in young animals.
  • The epiphysis of the femur articulates with the pelvis at the hip joint.

Variants and Related Words

• Longitudinal Bone: A less common synonym emphasizing the length.
• Tubular Bone: A synonym referencing the hollow, cylindrical structure.
• Short Bone: A contrasting anatomical classification for bones that are roughly cube-shaped (e.g., carpal bones in the wrist).
• Flat Bone: A contrasting anatomical classification for bones that are thin and often curved (e.g., skull bones, scapula).
• Irregular Bone: A contrasting anatomical classification for bones with complex shapes (e.g., vertebrae).

Synonyms

• Tubular bone
• Longitudinal bone

Antonyms / Contrasting Terms

• Short bone
• Flat bone
• Irregular bone
• Sesamoid bone

Noun

1. in limbs of vertebrate animals: a long cylindrical bone that contains marrow