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The frontal bone is a cranial bone forming the anterior portion of the skull, specifically the forehead. Here's a detailed description:
Location and Structure:
Position: Located in the anterior (front) part of the skull.
Shape: Irregular, somewhat shield-shaped.
Composition: Primarily composed of compact bone, which is denser and stronger than spongy bone. It also contains an inner and outer table (layers) of compact bone with a layer of spongy bone (diploe) in between.
Parts: The frontal bone is typically described as having these main parts:
Squama (Forehead): The large, curved, vertical part forming the forehead.
Orbital Part: Forms the superior (upper) part of the eye sockets (orbits). This includes the roofs of the orbits.
Nasal Part: Forms a small part of the root of the nose.
Frontal Sinuses: Air-filled cavities (sinuses) within the squama, above the orbits. Their size and shape vary significantly between individuals.
Key Features and Landmarks:
Supraorbital Margin: The superior (upper) rim of the eye socket.
Supraorbital Notch (or Foramen): A small notch (or sometimes a complete hole) located on the supraorbital margin, which transmits the supraorbital nerve and artery.
Glabella: A smooth, slightly raised area between the eyebrows.
Zygomatic Process: A projection on each side that articulates (s) with the zygomatic bone (cheekbone).
Frontonasal Suture: The line where the frontal bone articulates with the nasal bones.
Ethmoidal Notch: A notch on the posterior aspect of the orbital part that articulates with the ethmoid bone.
Lacrimal Fossa: A shallow depression in the orbital part for the lacrimal gland.
Trochlear Fovea: A small depression in the orbital part where the trochlea, a pulley-like structure for the superior oblique muscle, is located.
Functions:
Protection: Protects the brain, specifically the frontal lobes, from injury.
: Provides structural for the forehead, upper face, and eyes.
Muscle Attachment: Serves as an attachment point for various muscles involved in facial expression, eye movement, and head movement.
Formation of the Orbits: Forms a significant part of the eye sockets, protecting the eyes.
Formation of the Nasal Cavity: Contributes to the structure of the nasal cavity.
Voice Resonance: The frontal sinuses may contribute to voice resonance.
Clinical Significance:
Fractures: The frontal bone is susceptible to fractures, especially in cases of head trauma.
Frontal Sinus Infections: Infections in the frontal sinuses (sinusitis) can cause pain and pressure in the forehead.
Craniosynostosis: Premature fusion of the skull bones, including the frontal bone, in infants, which can affect brain development.#FrontalBone #Skull #Cranium #HumanAnatomy #3DModel #Segmentation #MedicalModeling #Anatomy3D #3DScan #DigitalAnatomy #BoneModel #CTScan #MRI #Radiology #Healthcare #MedicalIllustration #AnatomicalModel #VirtualReality #AugmentedReality #MedicalEducation #Osteology #Forehead #AnatomyEducation #ScienceIllustration #HealthcareTechnology #3DPrinting #DigitalHealth #MedicalVisualization #BodyParts #Skeleton #BoneStructure #FrontalLobe #Neuroanatomy #FacialBones #HeadAndNeck #MedicalImaging #AnatomicalStructures #Model3D #3DArt #ScienceArt #MedicalAnimation #AnatomyLab #SurgicalPlanning #Biomechanics #DigitalHuman #VoxelData #RealisticRendering #3DDesign #Codel #EducationalResources #AnatomyModel
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