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Frontal Bone Anatomy

Introduction to Frontal Bone Anatomy:

  • The image descriptionfrontal bone (L., frons – forehead) is a cranial bone that surrounds and protects the anterior portion of brain.
The anterior, lateral, cranial floor, and coronal views of the frontal bone
The anterior, lateral, cranial floor, and coronal views of the frontal bone
The anterior, lateral, coronal, and cranial floor views of the frontal bone
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  • It is divided into vertical and horizontal parts.
The anterior view of the frontal bone
The anterior view of the frontal bone - squamous part
The anterior view of the frontal bone - squamous part
The squamous part of the frontal bone
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The cranial floor view of the frontal bone
The cranial floor view of the frontal bone - orbital part
The cranial floor view of the frontal bone - orbital part
The orbital part of the frontal bone
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Markings of the Frontal Bone:

  1. The image descriptionsuperciliary arch or supraorbital ridge (arcus superciliaris frontalis) is a smooth, arched, elevation above the orbit, which forms the eyebrow ridge. [image descriptionAnterior view/image descriptionLateral view]

 

The anterior view of the frontal bone
The anterior view of the frontal bone - superciliary arch
The anterior view of the frontal bone - superciliary arch
The lateral view of the frontal bone
The lateral view of the frontal bone - superciliary arch
The lateral view of the frontal bone - superciliary arch
The superciliary arch of the frontal bone
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  1. The image descriptionglabella (glabella frontalis) is a smooth prominence located above the nasal bones (or nose) and between the superciliary arches (or eyebrow arches). [image descriptionAnterior view/image descriptionLateral view]
The anterior view of the frontal bone
The anterior view of the frontal bone - glabella
The anterior view of the frontal bone - glabella
The lateral view of the frontal bone
The lateral view of the frontal bone - glabella
The lateral view of the frontal bone - glabella
The glabella of the frontal bone
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  1. The image descriptionsupraorbital notch or foramen (incisura supraobitalis frontalis; foramen supra-orbitae frontalis) is a notch or small hole located along the superior margin of the orbit. It serves as a passageway for the supraorbital vessels and nerve. [image descriptionAnterior view]
The anterior view of the frontal bone
The anterior view of the frontal bone - supraorbital foramen
The anterior view of the frontal bone - supraorbital foramen
The supraorbital notch/foramen of the frontal bone
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  1. The image descriptionorbital surface or plate (facies orbitalis frontalis) is a horizontal extension that forms the roof of the orbit and nasal cavity. [image descriptionAnterior view/image descriptionCranial floor view]
The anterior view of the frontal bone
The anterior view of the skull - orbital surface
The anterior view of the skull - orbital surface
The cranial floor view of the frontal bone
The cranial floor view of the frontal bone - orbital surface
The cranial floor view of the frontal bone - orbital surface
The Orbital surface of the frontal bone
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  1. The image descriptionzygomatic process (processus zygomaticus frontalis) is an inferior extension of the squamous part of the frontal bone that joins with the frontal process of the zygomatic bone. [image descriptionFrontal view/image descriptionLateral view]
The anterior view of the frontal bone
The anterior view of the frontal bone - zygomatic process
The anterior view of the frontal bone - zygomatic process
The lateral view of the frontal bone
Thelateral view of the frontal bone - zygomatic process
Thelateral view of the frontal bone - zygomatic process
The zygomatic process of the frontal bone
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  1. The image descriptionfrontal sinus (sinus frontalis) is a large cavity located above the orbit and deep to the superciliary arch. [image descriptionAnterior view/image descriptionCoronal view]
The anterior view of the frontal bone - frontal sinus
The anterior view of the frontal bone - frontal sinus
The anterior view of the frontal bone - frontal sinus
The coronal view of the frontal bone
The coronal view of the frontal bone - frontal sinus
The coronal view of the frontal bone
The frontal sinus of the frontal bone
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  • The cavity secretes mucous into the nasal cavity, lightens the skull, and resonates the voice.

Test yourself:

Anterior view: [image descriptionShow/image descriptionHide answers]

The anterior view of the frontal bone - test yourself
The anterior view of the frontal bone - test yourself answers
Test yourself - anterior view
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Test yourself:

Lateral view: [image descriptionShow/image descriptionHide answers]

The lateral view of the frontal bone - test yourself
The lateral view of the frontal bone - test yourself answers
Test yourself - lateral view
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Test yourself:

Cranial floor view: [image descriptionShow/image descriptionHide answers]

The cranial floor view of the frontal bone - test yourself
The cranial floor view of the frontal bone - test yourself answers
Test yourself - cranial floor view
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Test yourself:

Coronal view: [image descriptionShow/image descriptionHide]

The coronal view of the frontal bone - test yourself
The coronal view of the frontal bone - test yourself answers
Test yourself - coronal view
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