Skip to main content
Back

Set #3 Anatomy & Physiology: Ribs, Spine, & Upper Extremities

Control buttons has been changed to "navigation" mode.
1/35
  • Nasal septum
    The vertical midline partition dividing the nasal cavity into right and left halves, made of the vomer, perpendicular plate, and cartilage.
  • Zygomatic arch
    The bony cheek arch formed by the fusion of the temporal process of the zygomatic bone and the zygomatic process of the temporal bone.
  • Bony orbit
    The cone-shaped skeletal cavity enclosing the eye and associated muscles, formed by 7 different skull bones.
  • Lambdoid suture
    The arched line of articulation across the posterior skull, connecting the occipital bone with the paired parietal bones.
  • Sagittal suture
    The midline articulation line on the top of the skull, connecting the right and left parietal bones.
  • Coronal suture
    The line of articulation running crown-like across the top of the skull, connecting the frontal bone to the parietal bones.
  • Squamous suture
    The lower lateral articulation line on each side of the skull, connecting the temporal bone to the parietal bone.
  • Frontal suture
    A suture line separating the two halves of the frontal bone during skull development, usually fusing in early childhood.
  • Frontonasal suture
    The horizontal line of articulation across the root of the nose, connecting the frontal bone with the nasal bones.
  • Intermaxillary suture
    The midline articulation line connecting the right and left maxilla bones directly under the nose.
  • Anterior (frontal) fontanel
    The largest diamond-shaped soft spot in an infant skull, located at the junction of the sagittal, coronal, and frontal sutures.
  • Posterior (occipital) fontanel
    A small, triangular soft spot in an infant skull, located posteriorly at the junction of the sagittal and lambdoid sutures.
  • Sphenoidal fontanel
    An irregular soft spot in an infant skull located anterolaterally at the junction of the sphenoid, parietal, temporal, and frontal bones.
  • Mastoid fontanel
    An irregular soft spot in an infant skull located posterolaterally at the junction of the temporal, parietal, and occipital bones.
  • Hyoid bone
    A U-shaped bone in the mid-neck above the larynx; unique because it does not articulate directly with any other bone.
  • Costal cartilage
    Segments of hyaline cartilage connecting the ribs to the sternum, providing flexibility to the rib cage.
  • Ribs
    12 pairs of curved flat bones forming the lateral walls of the thoracic cage; right vs. left side orientation must be determined.
  • Sternal end of rib
    The blunt, flattened anterior end of the rib that attaches to the costal cartilage.
  • Vertebral end of rib
    The posterior end of the rib featuring the head, neck, and tubercle; articulates with the thoracic vertebrae.
  • Costal tubercle
    A small knob-like projection on the posterior surface of the rib near the head; articulates with the transverse process of a thoracic vertebra.
  • Costal groove
    A shallow trench along the internal inferior border of a rib; protects intercostal nerves and blood vessels.
  • True ribs
    Rib pairs 1 through 7; attach directly to the sternum via individual costal cartilages.
  • False ribs
    Rib pairs 8 through 12; do not attach directly to the sternum (8-10 fuse to cartilage of rib 7).
  • Floating ribs
    Rib pairs 11 and 12; a subcategory of false ribs with no anterior attachment to the sternum or other cartilage.
  • Sternum
    The breastbone; a flat bone located along the anterior midline of the thoracic cage.
  • Manubrium
    The superior, widest, and triangular portion of the sternum.
  • Jugular notch
    A shallow, central depression on the top edge of the manubrium of the sternum.
  • Body of sternum
    The long, central, middle section of the sternum.
  • Xiphoid process
    The small, inferior, pointed cartilaginous projection at the lower tip of the sternum.
  • Cervical region of spine
    The neck region of the spine, consisting of 7 vertebrae (C1−C7).
  • Thoracic region of spine
    The chest region of the spine, consisting of 12 vertebrae (T1−T12) that articulate with ribs.
  • Lumbar region of spine
    The lower back region of the spine, consisting of 5 large, stout vertebrae (L1−L5).
  • Sacral region of spine
    The pelvic region of the spine, consisting of 5 fused vertebrae forming the sacrum.
  • Coccygeal region of spine
    The tailbone region at the bottom of the spine, consisting of 3 to 5 small fused vertebrae.
  • Vertebral body (centrum)
    The thick, disc-shaped anterior weight-bearing section of a vertebra.