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Anatomy of the Hyoid Bone, Sternum, and Ribs

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이 집합의 용어 (20)

  • What are the three main parts of the hyoid bone?
    The hyoid bone consists of the body, greater horns, and lesser horns.
  • Where is the hyoid bone located?
    The hyoid bone is located in the anterior neck, above the larynx, and does not articulate directly with any other bone.
  • What is the function of the hyoid bone?
    The hyoid bone supports the tongue and serves as an attachment site for muscles of the neck and pharynx.
  • Name the three parts of the sternum.
    The sternum is composed of the manubrium, body, and xiphoid process.
  • What is the suprasternal notch?
    The suprasternal notch is a visible dip at the superior border of the manubrium of the sternum.
  • What are the true ribs?
    True ribs (1-7) attach directly to the sternum via their own costal cartilages.
  • What distinguishes false ribs from true ribs?
    False ribs (8-12) either attach indirectly to the sternum or not at all; ribs 8-10 attach via cartilage of rib 7, ribs 11-12 are floating ribs.
  • What are floating ribs?
    Floating ribs (11-12) do not attach to the sternum at all and have free anterior ends.
  • What is the costal groove on a rib?
    The costal groove is a groove on the inferior border of the rib shaft that protects blood vessels and nerves.
  • What is the function of the sternum?
    The sternum protects the heart and lungs and serves as an attachment point for ribs and muscles.
  • What is the sternal angle?
    The sternal angle is the junction between the manubrium and the body of the sternum, palpable as a ridge.
  • What is the vertebrosternal rib classification?
    Vertebrosternal ribs are true ribs that connect directly to the sternum via their own costal cartilage.
  • What is the vertebrochondral rib classification?
    Vertebrochondral ribs are false ribs (8-10) that connect to the sternum indirectly through cartilage of the rib above.
  • What is the anatomical significance of the clavicular notch?
    The clavicular notch on the manubrium articulates with the clavicle to form the sternoclavicular joint.
  • What is the function of the rib tubercle?
    The rib tubercle articulates with the transverse process of the thoracic vertebra.
  • What is the head of a rib?
    The head of a rib articulates with the bodies of thoracic vertebrae.
  • What is the neck of a rib?
    The neck of a rib is the flattened part between the head and the tubercle.
  • What is the costal cartilage?
    Costal cartilage connects the ribs to the sternum and provides elasticity to the thoracic cage.
  • What is the intercostal space?
    The intercostal space is the space between adjacent ribs that contains muscles, nerves, and blood vessels.
  • What is the function of the thoracic cage?
    The thoracic cage protects vital organs and supports respiration by allowing expansion and contraction.