Facial Bones: Names, Anatomy & Functions

The human face is supported by 14 facial bones that give it shape, form the openings for the eyes and nose, support the teeth, and provide attachment points for muscles involved in chewing, speaking, and facial expression. These bones work together with the bones of the skull, cartilage, muscles, nerves, and soft tissues to create the structure and movement of the face.

The facial skeleton, also called the viscerocranium, is distinct from the cranial skeleton, which surrounds and protects the brain. Although the two parts connect to form the skull, they serve different primary functions. The facial bones support the structures used for breathing, eating, and sensing the environment, while also helping protect delicate tissues and organs.

Understanding the names, locations, and functions of the facial bones reveals how the face balances strength, mobility, protection, and sensory function.

How many facial bones are there?

The adult human facial skeleton consists of 14 bones: six pairs of bones and two unpaired bones. The paired bones are the maxillae, zygomatic bones, nasal bones, lacrimal bones, palatine bones, and inferior nasal conchae. The two unpaired bones are the mandible and vomer.

The term paired means that a bone occurs on both the right and left sides of the face. These bones are generally similar in shape, although normal anatomical variation can produce differences between the two sides.

The count of 14 refers specifically to the facial skeleton. It does not include the six auditory ossicles, the small bones of the middle ears, or the hyoid bone in the neck, which supports the tongue and provides attachment points for muscles involved in swallowing and speech.

The 14 facial bones and their functions

Each facial bone contributes to a larger structure. Some form broad surfaces that give the face its shape, while others create small but important parts of the nasal cavity, eye sockets, and oral cavity.

Maxillae: The foundation of the upper jaw

The two maxillae, or upper jaw bones, are among the most important facial bones. They meet at the midline of the face and form much of the central facial skeleton.

Each maxilla contains a curved alveolar process, a ridge that holds the sockets for the upper teeth. These sockets anchor the teeth through specialized connective tissues that attach each tooth root to its surrounding bone.

The maxillae also form much of the floor of the eye sockets, portions of the nasal cavity, and the front part of the hard palate, which separates the mouth from the nasal cavity. Inside each maxilla is a maxillary sinus, an air-filled cavity connected to the nasal cavity.

Because the maxillae contribute to several major facial structures, injuries or developmental differences affecting these bones can influence the bite, facial proportions, nasal airflow, and support of the eyes.

Mandible: The movable lower jaw

The mandible is the largest and strongest facial bone. It forms the lower jaw and supports the lower teeth. Unlike most facial bones, which are joined to neighboring bones by immovable or nearly immovable joints, the mandible moves during chewing, speaking, yawning, and swallowing.

At its upper rear corners, the mandible has two projections called the condylar processes. Each connects to the temporal bone of the skull at a temporomandibular joint, commonly abbreviated as the TMJ. These joints allow the jaw to open, close, slide forward and backward, and move from side to side.

The mandible also provides attachment points for muscles that close and move the jaw. Its internal openings and canals allow nerves and blood vessels to travel to the lower teeth and nearby tissues.

The combination of bone shape, joint movement, muscle force, and tooth alignment makes the mandible essential for biting, grinding food, and producing the precise movements needed for speech.

Zygomatic bones: The cheekbones

The paired zygomatic bones form the prominent cheekbones on either side of the face. They contribute to the outer walls and floors of the eye sockets and connect with neighboring bones, including the maxillae and temporal bones.

Extensions of the zygomatic and temporal bones meet to form the zygomatic arches, the bony structures that can be felt along the sides of the face just in front of the ears. These arches provide passage and attachment relationships for muscles involved in chewing, including the masseter muscle, which helps elevate the mandible.

The zygomatic bones also help protect the eyes by contributing to the sturdy framework surrounding the orbits, the anatomical term for the eye sockets. Their shape plays a major role in the width and contour of the middle face.

Nasal bones: The bony bridge of the nose

The two nasal bones are small, elongated bones that meet at the midline to form the upper bony bridge of the nose. They connect with the frontal bone above and the maxillae along their sides.

These bones provide structural support for the upper nose, while the lower portions of the nose are shaped largely by cartilage and soft tissue. This distinction explains why the bridge of the nose feels firm while the tip and much of the lower nose are more flexible.

The nasal bones contribute to the external appearance of the nose, but they do not form the entire nasal framework. The nasal cavity, through which air travels, is a separate internal space bounded by several bones, cartilage, and soft tissues.

Lacrimal bones: Small bones beside the eyes

The lacrimal bones are the smallest bones of the facial skeleton. Each is located on the inner wall of an eye socket, near the nose.

These thin bones help form a shallow groove associated with the lacrimal sac, which collects tears draining from the surface of the eye. Tears pass through small openings in the eyelids into drainage channels and then enter the lacrimal sac before traveling through the nasolacrimal duct into the nasal cavity.

The lacrimal bones therefore contribute to the bony framework surrounding the eye and support the anatomy of the tear drainage system. Their role is small in terms of overall facial structure but important for the organization of nearby tissues.

Palatine bones: The back of the hard palate

The two palatine bones are L-shaped bones located toward the back of the nasal cavity and oral cavity. Their horizontal plates form the rear portion of the hard palate, the bony roof of the mouth.

The hard palate separates the oral and nasal cavities, allowing food and air to travel through different pathways. The palatine bones also contribute to the floor and outer wall of the nasal cavity and to a small portion of the floor of each eye socket.

Their position makes them important to the structural separation of the mouth and nose. The hard palate also provides a firm surface against which the tongue can press during chewing and speech.

Inferior nasal conchae: Structures that condition inhaled air

The inferior nasal conchae are two curved bones located along the outer walls of the nasal cavity. Each projects inward, creating a scroll-like structure covered by a moist lining rich in blood vessels.

These bones increase the internal surface area of the nasal cavity and help direct airflow. As air passes over the lining, it is warmed, humidified, and filtered as particles become trapped in mucus and are moved toward the throat by microscopic hairlike structures called cilia.

The inferior nasal conchae are distinct bones, unlike the superior and middle nasal conchae, which are parts of the ethmoid bone. All three pairs of conchae contribute to airflow patterns within the nose.

By helping regulate airflow and prepare inhaled air for the lower respiratory tract, the inferior nasal conchae support normal breathing and the protective functions of the nasal passages.

Vomer: Part of the nasal septum

The vomer is a thin, roughly plow-shaped bone located in the center of the nasal cavity. It forms the lower and rear portions of the bony nasal septum, the partition that separates the right and left nasal passages.

The upper part of the septum is formed largely by the perpendicular plate of the ethmoid bone, while cartilage forms much of its front portion. Together, these structures create a partition that helps organize the nasal cavity into two sides.

A perfectly straight septum is not necessary for normal breathing, and some degree of asymmetry is common. However, a substantial deviation can narrow one or both nasal passages and contribute to airflow obstruction.

The vomer therefore plays a structural role in separating the nasal passages rather than directly conditioning the air that passes through them.

How facial bones fit together

The facial skeleton is not a collection of isolated pieces. Its bones meet at joints called sutures, which are narrow seams of dense connective tissue that hold the bones together. Most facial sutures allow little to no movement after growth is complete.

The maxillae, zygomatic bones, nasal bones, lacrimal bones, palatine bones, and vomer connect with multiple neighboring bones to create a stable framework. This interconnected arrangement distributes forces across the face rather than concentrating them in a single bone.

The mandible is the major exception to this relative immobility. Its paired temporomandibular joints connect it to the cranium and allow movement. Although these joints are sometimes described as hinges, their motion combines rotation and sliding, which permits the range of movements needed for chewing.

Facial bones also interact with structures that are not bone. Cartilage shapes much of the nose, muscles move the jaw and change facial expressions, and ligaments stabilize joints. Blood vessels and nerves pass through openings and canals in the bones to reach the teeth, skin, muscles, and other tissues.

The result is a framework that is both sturdy and adaptable, supporting movement while maintaining the shape and organization of the face.

The relationship between facial bones and the skull

The facial skeleton is closely connected to the cranial skeleton, which consists of eight bones that surround and protect the brain. Together, the facial and cranial bones form the skull.

The frontal bone, which forms the forehead, contributes to the upper margins of the eye sockets. The ethmoid bone lies between the eye sockets and forms parts of the nasal cavity and medial orbital walls. The sphenoid bone contributes to the deeper portions of the eye sockets, while the temporal bones connect with the mandible at the temporomandibular joints.

These connections show why facial anatomy cannot be understood by examining the 14 facial bones alone. Several important structures, including the eye sockets and nasal cavity, are formed by a combination of facial and cranial bones.

The distinction between the two groups is based on their anatomical organization, not on a complete separation of their functions. Together, they protect the brain and sensory organs, support the teeth, and provide pathways for air, food, nerves, and blood vessels.

The major functions of the facial skeleton

Facial bones perform several functions simultaneously. Their shape and arrangement allow the face to support essential activities without sacrificing stability or sensory protection.

Supporting the teeth and chewing. The maxillae and mandible hold the upper and lower teeth. Their shape maintains the dental arches, while the mandible moves under the action of the chewing muscles. The teeth break food into smaller pieces, making it easier to swallow and digest.

Protecting the eyes and surrounding tissues. The frontal, zygomatic, maxillary, ethmoid, and sphenoid bones contribute to the walls of the eye sockets. This bony enclosure protects the eyes and provides attachment points for tissues that control eye movement. The surrounding bones do not eliminate the risk of injury, but they form an important protective framework.

Supporting breathing and smell. The bones of the nasal cavity create its internal structure. The nasal conchae guide airflow, while the nasal septum separates the passages. The nasal cavity also contains the specialized sensory lining responsible for detecting odors, although the bones themselves do not detect smells.

Separating the oral and nasal cavities. The maxillae and palatine bones form the hard palate, which creates a bony partition between the mouth and nose. This separation helps organize the passage of air and food and provides a firm surface for the tongue during eating and speech.

Enabling speech and facial expression. Facial bones provide attachment points and structural support for muscles involved in moving the jaw, lips, and other soft tissues. Speech depends on coordinated movement of the mandible, tongue, lips, soft palate, and larynx, rather than on the bones alone.

Giving the face its shape. The positions and proportions of the facial bones help determine the width of the cheeks, projection of the upper and lower jaws, shape of the nasal bridge, and overall contour of the face. Skin, fat, cartilage, and muscle also contribute substantially to a person’s appearance.

How facial bones develop and change with age

Facial bones develop through a combination of bone formation, growth at specialized regions, and remodeling. Bone remodeling is the continuous process in which old bone tissue is removed and new tissue is formed. It allows the skeleton to adapt to changing mechanical demands and maintain its structure.

Many facial bones form through intramembranous ossification, a process in which bone develops directly from connective tissue rather than first forming a cartilage model. Some parts of the skull and facial region develop through endochondral ossification, in which bone replaces a cartilage template.

During childhood, the facial skeleton grows along with the teeth, nasal passages, eye sockets, and surrounding soft tissues. The jaws change in size and shape, and the eruption of primary and permanent teeth influences the development of the alveolar processes, the parts of the jaws that contain the tooth sockets.

The facial skeleton does not mature uniformly. Different bones and regions grow at different rates, and the timing of growth varies among individuals. The jaws and midface continue changing through childhood and adolescence, with growth generally slowing as adulthood approaches.

In adulthood, facial bones remain living tissue. They continue to respond to mechanical forces and undergo remodeling, even though major growth in overall facial dimensions has largely ended. Tooth loss can lead to gradual resorption of the alveolar bone that once supported the teeth. Changes in bone density and remodeling with aging can also affect facial support and contours.

These changes occur alongside changes in skin elasticity, muscle mass, and the distribution of facial fat. For that reason, visible changes in facial appearance with age cannot be attributed to bone alone.

Common facial bone injuries and disorders

Because facial bones surround the eyes, nose, mouth, and upper airway, injuries can affect more than appearance. The consequences depend on which bone is involved, how severe the injury is, and whether nearby nerves, blood vessels, teeth, or soft tissues are damaged.

A nasal fracture is a break in one or both nasal bones. It can cause pain, swelling, bruising, and changes in the shape of the nose. Injuries may also damage the nasal septum or surrounding cartilage, so a normal-looking external bridge does not necessarily rule out internal injury.

A zygomatic fracture can affect the cheekbone and the surrounding eye socket. Depending on its location and severity, it may cause cheek flattening, difficulty opening the mouth, altered sensation in the cheek, or problems with eye movement. Some fractures involve the zygomatic arch without substantially affecting other parts of the cheekbone.

Maxillary fractures can disrupt the upper jaw, dental alignment, and the structures supporting the nose and eye sockets. More severe injuries may interfere with chewing, alter the bite, or involve multiple bones of the midface.

A mandibular fracture can produce pain, swelling, difficulty opening the mouth, or a change in how the teeth meet. Because the mandible supports the lower teeth and participates in two joints, treatment must account for both bone alignment and jaw function.

Developmental conditions can also affect facial bones. A cleft palate, for example, occurs when tissues forming the roof of the mouth do not fully join during development. Depending on the type, a cleft may involve the hard palate, soft palate, or both and can affect feeding, speech, and the separation between the oral and nasal cavities. Some craniofacial conditions alter the growth or fusion of bones, influencing facial proportions and the alignment of the jaws.

Persistent jaw pain, difficulty chewing, changes in the bite, facial numbness, or visible deformity after an injury warrant medical assessment. Injuries involving vision changes, severe facial bleeding, difficulty breathing, or significant trauma require urgent evaluation.

Why understanding facial bone anatomy matters

The facial skeleton provides a useful example of how anatomy integrates structure and function. The maxillae support the upper teeth and contribute to the nose and eye sockets. The mandible supplies the mobility needed for chewing and speech. The zygomatic bones shape the cheeks and support the orbital framework, while the smaller nasal, lacrimal, palatine, inferior nasal conchal, and vomer bones help organize the nose, eye sockets, and roof of the mouth.

Each bone has a distinct anatomical identity, but none operates entirely on its own. The facial skeleton works as a connected system with the cranial bones, teeth, cartilage, muscles, nerves, and soft tissues. This cooperation allows the face to maintain its form while performing the essential tasks of breathing, eating, speaking, sensing odors, and expressing emotion.