Definition. The frontal bone (os frontale) is an unpaired craniofacial bone that provides partial coverage of the brain and forms the structure of the forehead and upper casing of the eye sockets. It is composed of a squamous part, two orbital parts, and one nasal part.
What are the three parts of the frontal bone?
The frontal bone is one of the skull bones enclosing the brain (neurocranium) and it consists of three parts:
- the squamous part.
- the orbital part.
- the nasal part.
What is a frontal in anatomy?
Frontal: In anatomy, pertaining to the forehead. As, for example, the frontal bone, frontal sinus, and frontal nerve. From the Latin frons meaning the forehead or brow.
Why is the frontal bone important?
The frontal bone is one of the eight bones that together form the cranium, otherwise known as the protective case of the brain. The primary functions of the frontal bone are to protect the brain and support the structures of the head, such as the nasal passages and eyes.
Which bones are connected to the frontal bone?
The frontal bone borders two other neurocranial bonesthe parietal bones through the coronal sutures and the sphenoid bone through the sphenofrontal suture. It also articulates with the zygomatic and nasal bones and the maxilla.
Is the frontal bone two bones?
The frontal bone is a bone in the human skull. The bone consists of two portions. …
| Frontal bone | |
|---|---|
| Articulations | Twelve bones: the sphenoid, the ethmoid, the two parietals, the two nasals, the two maxill, the two lacrimals, and the two zygomatics |
What is the weakest part of the skull?
pterion Clinical significance The pterion is known as the weakest part of the skull. The anterior division of the middle meningeal artery runs underneath the pterion. Consequently, a traumatic blow to the pterion may rupture the middle meningeal artery causing an epidural haematoma.
What is the Squamosal suture?
Abstract. The squamosal suture is one of the lateral minor skull sutures, separating the parietal and squamous temporal bones. While the phenotypic appearances and sequelae of synostosis of the major cranial vault sutures are well documented, little is reported concerning synostosis of the squamosal suture (SQS).
What is frontal bone?
Frontal bone: The large bone that makes up the forehead and supplies the upper edge and roof of the orbit (eye socket). The frontal bone articulates (comes together) with a number of other bones including the parietal, nasal, ethmoid, maxillary, and zygomatic bones.
Is frontal bone a facial bone?
The primary bones of the face are the mandible, maxilla, frontal bone, nasal bones, and zygoma. Facial bone anatomy is complex, yet elegant, in its suitability to serve a multitude of functions.
What is the meaning frontal?
1 : of, relating to, or adjacent to the forehead or the frontal bone. 2a : of, relating to, or situated at the front. b : directed against the front or at the main point or issue : direct frontal assault. 3 : parallel to the main axis of the body and at right angles to the sagittal plane.
How strong is the forehead bone?
The frontal bone can resist 400 to 1000 kg before fracture, thus it is secondary to high-velocity trauma and, by nature, commonly has concomitant facial fractures. Fractures of the frontal bone area frequently extend to the orbital roof, nose, dura, and frontal lobe.
Can you break your forehead?
Frontal bone (forehead) fractures: The frontal bone is the main bone in the forehead area. A high-impact injury to the head can cause a fracture of the frontal bone and floor of the sinuses. The fracture is mostly likely to occur in the middle of the forehead.
Which part of skull is strongest?
The fourteen bones at the front of your skull hold your eyes in place and form your facial features. Your mandible, or jawbone, is the largest, strongest bone in your face.
Where frontal and parietal bones meet?
coronal suture Each frontal bone plate meets with a parietal bone plate at the coronal suture. Sagittal suture. This extends from the front of the head to the back, down the middle of the top of the head. The 2 parietal bone plates meet at the sagittal suture.
What are the 8 facial bones?
Facial Bones
- Maxilla (2)
- Zygomatic (2)
- Mandible (1)
- Nasal (2)
- Platine (2)
- Inferior nasal concha (2)
- Lacrimal (2)
- Vomer (1)
Is the frontal bone a flat bone?
Flat bones of the skull Many of the bones of your skull are flat bones. These include: Frontal bone. This bone forms your forehead and the upper portion of your eye sockets.
What is the largest bone of the head?
mandible The skull is composed of two parts: the cranium and the mandible. In humans, these two parts are the neurocranium and the viscerocranium (facial skeleton) that includes the mandible as its largest bone.
How big is the frontal bone?
The mean thickness of frontal, parietal, temporal, and occipital bones was 7.9 mm, 9.7 mm, 6 mm, and 10.1 mm for men; 8.7 mm, 10.2 mm, 6.1 mm, and 10.1 mm for women, respectively. Women had significantly thicker frontal bone when compared to men (P = 0.009).
What is the spongy bone between the eyes called?
Ethmoid bone. The light, spongy bone between the eye sockets that form part of the nasal cavities. Sphenoid bone. Joins all the bones of the cranium together.
Do skulls have ear holes?
External acoustic meatus (ear canal)This is the large opening on the lateral side of the skull that is associated with the ear. Internal acoustic meatusThis opening is located inside the cranial cavity, on the medial side of the petrous ridge. It connects to the middle and inner ear cavities of the temporal bone.
Which bone is most superior?
the atlas Anatomical terms of bone In anatomy, the atlas (C1) is the most superior (first) cervical vertebra of the spine and is located in the neck. It is named for Atlas of Greek mythology because, just as Atlas supported the globe, it supports the entire head.
What is the weakest part of the human body?
The stapedius is the smallest skeletal muscle in the human body. The lower back is the weakest muscles and the one place most humans don’t train when exercising. If looking for weakest point to hit in a fight especially if opponent is bigger than you: The eyes, throat, nose, groin, instep.
What is the serrate suture?
An articulation by suture in which there is an interlocking of bones by small projections and indentations resembling sawlike teeth.
What is pterion of the skull?
The pterion is a craniometric point near the sphenoid fontanelle of the skull. It is a point of convergence of the sutures between the frontal, sphenoid, parietal, and squamous temporal bones [1.
Does everyone have Sutural bones?
They are found in both sexes as well as in both sides of the skull. Approximately half of Sutural bones are located in the lambdoid suture and fontanel and the masto-occipital suture. The second most common site of incidence (about 25%) is in the coronal suture.
How does the frontal bone work?
The frontal bone is a bone of the skull found in the forehead region. It is one of eight bones that form the cranium, or brain case. The frontal bone plays a vital role in supporting and protecting the delicate nervous tissue of the brain. It gives shape to the skull and supports several muscles of the head.
What is the function of the lacrimal bone?
Lacrimal bones are a part of the lacrimal (tear production) system. The lacrimal system contains the lacrimal gland, which produces tears, and the nasolacrimal duct, which drains tears from the eye to the nose. Lacrimal bones provide structure for the orbital cavity and support the eye.
What does the frontal lobe do?
The frontal lobes are important for voluntary movement, expressive language and for managing higher level executive functions. Executive functions refer to a collection of cognitive skills including the capacity to plan, organise, initiate, self-monitor and control one’s responses in order to achieve a goal.
Graduated from ENSAT (national agronomic school of Toulouse) in plant sciences in 2018, I pursued a CIFRE doctorate under contract with Sun’Agri and INRAE in Avignon between 2019 and 2022. My thesis aimed to study dynamic agrivoltaic systems, in my case in arboriculture. I love to write and share science related Stuff Here on my Website. I am currently continuing at Sun’Agri as an R&D engineer.