Calvaria: Bones & Borders

Calvaria: Bones & BordersKey facts about the cranial “roof”, which is also known as calvaria
~ 3 min

The superior part of the neurocranium is called calvaria (calvaria).

Calvaria (calvaria)
Calvaria (calvaria)

The border between the calvaria and the cranial base runs along a line connecting:

  1. External occipital protuberance (protuberantia occipitalis externa)

    External occipital protuberance (protuberantia occipitalis externa)
    External occipital protuberance (protuberantia occipitalis externa)
  2. Superior nuchal line (linea nuchalis superior)

    Superior nuchal line (linea nuchalis superior)
    Superior nuchal line (linea nuchalis superior)
  3. Mastoid process (processus mastoideus)

    Mastoid process (processus mastoideus)
    Mastoid process (processus mastoideus)
  4. The area above the external acoustic opening (porus acusticus externus)

    External acoustic opening (porus acusticus externus)
    External acoustic opening (porus acusticus externus)
  5. Zygomatic process (processus zygomaticus) of the temporal bone

    Zygomatic process (processus zygomaticus)
    Zygomatic process (processus zygomaticus)
  6. Infratemporal crest (crista infratemporalis) of the greater wing of the sphenoidal bone

    Infratemporal crest (crista infratemporalis)
    Infratemporal crest (crista infratemporalis)
  7. Zygomatic process (processus zygomaticus) of the frontal bone

    Zygomatic process (processus zygomaticus)
    Zygomatic process (processus zygomaticus)
  8. Supraorbital margin of the frontal bone (margo supraorbitalis)

Supraorbital margin (margo supraorbitalis)
Supraorbital margin (margo supraorbitalis)

The following bones form the calvaria

  • The squamous part of the frontal bone (squama frontalis)

    Squamous part of frontal bone (squama frontalis)
    Squamous part of frontal bone (squama frontalis)
  • Parietal bone (os parietale)

    Parietal bone (os parietale)
    Parietal bone (os parietale)
  • The squamous part of the occipital bone (squama occipitalis)

    Squamous part of occipital bone (squama occipitalis)
    Squamous part of occipital bone (squama occipitalis)
  • The squamous part of the temporal bone (squama temporalis)

    Squamous part of temporal bone (squama temporalis)
    Squamous part of temporal bone (squama temporalis)
  • The lateral part of the greater wing (ala major) of the sphenoidal bone

    Greater wing (ala major)
    Greater wing (ala major)

    These bones are connected by several sutures, which gives the calvaria a complete form.

  • Sagittal suture (sutura sagittalis), which is located between the parietal bones

    Sagittal suture (sutura sagittalis)
    Sagittal suture (sutura sagittalis)
  • Coronal suture (sutura coronalis), which is located between the squamous part of the frontal bone and the parietal bone

    Coronal suture (sutura coronalis)
    Coronal suture (sutura coronalis)
  • Lambdoid suture (sutura lambdoidea), which is located between the squamous part of the occipital bone and the parietal bone

    Lambdoid suture (sutura lambdoidea)
    Lambdoid suture (sutura lambdoidea)
  • Squamous suture (sutura squamosa), which is located between the squamous part of the temporal bone and the parietal bone

    Squamous suture (sutura squamosa)
    Squamous suture (sutura squamosa)
  • Serrate sutures (suturae serratae), which are located between the lateral part of the greater wing of the sphenoidal bone and the surrounding bones

Serra sutures (suturae serratae)
Serra sutures (suturae serratae)

The anterior part of the calvaria is called the forehead (frons).

The anterolateral part of the calvaria is called the temporal fossa (fossa temporalis).

Temporal fossa (fossa temporalis)
Temporal fossa (fossa temporalis)

It is bordered from below by the infratemporal crest of the greater wing of the sphenoidal bone, and from the lateral side by the zygomatic arch (arcus zygomaticus).

Zygomatic arch (arcus zygomaticus)
Zygomatic arch (arcus zygomaticus)

The posterior superior part of the calvaria is called the vertex (vertex).

The peculiarities of the internal (cerebral) surface of the listed bones are described in the corresponding PDFnotes.

Dictionary

Calvaria

calvaria
calvaria
external occipital protuberance
protuberantia occipitalis externa
superior nuchal line
linea nuchalis superior
mastoid process
processus mastoideus
external acoustic opening
porus acusticus externus
zygomatic process
processus zygomaticus
infratemporal crest
crista infratemporalis
supraorbital margin
margo supraorbitalis
squamous part of frontal bone
squama frontalis
parietal bone
os parietale
squamous part of occipital bone
squama occipitalis
squamous part of temporal bone
squama temporalis
greater wing
ala major
sagittal suture
sutura sagittalis
coronal suture
sutura coronalis
lambdoid suture
sutura lambdoidea
squamous suture
sutura squamosa
serra sutures
suturae serratae
forehead
frons
temporal fossa
fossa temporalis
zygomatic arch
arcus zygomaticus
vertex
vertex
Main screen of the Easy Anatomy app

Download Easy Anatomy and try it for free

  • Anatomical atlas
  • Interactive notes
  • Videos on Anatomy
  • Flashcard tests

Easy Anatomy

Learn anatomy effectively

3.2K

Функция доступна в приложении

Download the app