what are the bones of the head

What are the bones in the head called?

The cranium is composed of the eight bones of the skull known as the cranial bones. The cranial bones include the frontal bone, a parietal bone on each side, a temporal bone on each side, the occipital bone, the ethmoid bone, and the sphenoid bone.

What are the 7 skull bones?

Cranial BonesParietal (2)Temporal (2)Frontal (1)Occipital (1)Ethmoid (1)Sphenoid (1)

What are the 22 bones of the head?

The skull (22 bones) is divisible into two parts: (1) the cranium, which lodges and protects the brain, consists of eight bones (Occipital, Two Parietals, Frontal, Two Temporals, Sphenoidal, Ethmoidal) and the skeleton of the face, of fourteen (Two Nasals, Two Maxillae, Two Lacrimals, Two Zygomatics, Two Palatines, Two ...

How many bones are in head?

The skull (also known as cranium) consists of 22 bones which can be subdivided into 8 cranial bones and 14 facial bones. The main function of the bones of the skull along with the surrounded meninges, is to provide protection and structure.

What are the 14 skull bones?

In the human skull, the facial skeleton consists of fourteen bones in the face:Inferior turbinal (2)Lacrimal bones (2)Mandible.Maxilla (2)Nasal bones (2)Palatine bones (2)Vomer.Zygomatic bones (2)

What is the top of the head called?

crownThe crown of your head is located at the very top of your skull. You may also sometimes see it referred to as the vertex.

Are there 28 or 22 bones in the skull?

The human skull is generally considered to consist of twenty-two bones—eight cranial bones and fourteen facial skeleton bones. In the neurocranium these are the occipital bone, two temporal bones, two parietal bones, the sphenoid, ethmoid and frontal bones.

What is the largest bone of the head?

The mandible is the strongest and largest bone of the face.

How do you remember the skull bones?

0:447:07Skull Bones Mnemonic (Cranial and Facial Bones) - YouTubeYouTubeStart of suggested clipEnd of suggested clipThe first pair of bones in the cranium are the parietal bones. The word parietal. Sounds similar toMoreThe first pair of bones in the cranium are the parietal bones. The word parietal. Sounds similar to pair.

What is the back of your head bone called?

The occipital boneThe occipital bone is a bone that covers the back of your head; an area called the occiput. The occipital bone is the only bone in your head that connects with your cervical spine (neck). The occipital bone surrounds a large opening known as the foramen magnum.

What is the smallest bone in body?

stapesThe smallest bones are in the ear The smallest bones in the human body are the malleus (hammer), incus (anvil) and the stapes (stirrup). Collectively, these bones are known as the ossicles (Latin for “tiny bones”) and their role is to transmit sound vibrations from the air to the fluid in the inner ear.

What are the 4 main sutures of skull?

One suture in the middle of the skull extends from the front of the head to the back....The major sutures of the skull include the following:Metopic suture. ... Coronal suture. ... Sagittal suture. ... Lambdoid suture.

What are the six fontanelles?

Structure and FunctionAnterior Fontanelle. The anterior fontanelle is the largest of the six fontanelles, and it resembles a diamond-shape ranging in size from 0.6 cm to 3.6 cm with a mean of 2.1 cm. ... Posterior Fontanelle. ... Mastoid Fontanelle. ... Sphenoid Fontanelle. ... Third Fontanel.

How many bones are in the skull and face?

The skull consists of 8 cranial bones and 14 facial bones.

How many unique bones form the skull?

eight bonesYour brain is protected by several bones. There are eight bones that surround your brain: one frontal bone; two parietal bones, two temporal bones, one occipital bone, one sphenoid bone and one ethmoid bone. These eight bones make up the cranium. Another 14 bones in the face make up the entire skull.

What are the bones of the head?

The bones of the head form a protective cavity around the brain. The bones of the head meet at joint lines called sutures. They are a type of fibrous joint, which are immovable. The 22 bones of the skull can be divided in to two main categories: the cranium and the facial skeleton. The cranium encloses and protects the brain; whereas, ...

Which bone is the strongest and largest bone in the face?

The bones of the cranial base allow articulation with the first cervical vertebrae, as well as with the mandible to form the temporomandibular joint. The mandible is the strongest and largest bone of the face. The mandible forms the lower jaw and is the site of insertion for the lower teeth.

What is the sphenoid bone?

The sphenoid bone is a butterfly-shaped bone consisting of a body, and upper and lower wings. The sphenoid bone contains the sphenoid sinuses. The ethmoid bone forms the roof of the nasal cavity. Fibres from the olfactory nerve (CN1) pass through the ethmoid bone into the nasal cavity allowing the sense of smell.

Which bone supports the temporal lobes?

The temporal bone , located laterally, supports the temporal lobes, as well as containing the middle and inner parts of the ear. The bones of the head create the bony orbits: symmetrical cavities which surround and protect the eye and associated structures.

What structures enter and leave the cranium?

Neurovascular structures enter and leave the cranium through the cranial foramina. The cranium can be divided further in to the calvarium and the cranial base. The calvarium is comprised of the frontal, occipital and two parietal bones, and the cranial base is comprised of the frontal, sphenoid, ethmoid, occipital, parietal and temporal bones.

What are the bones of the skull?

Our skull is basically comprised of 22 different bones, which are further divided into two categories, namely: 1 Cranial Bones 2 Facial Bones

Why are head bones important?

On the other hand, the head bones are crucial too as they provide us facility of expressions. Without it, we would never imagine how hard our lives can be.

What is the red bone in the nose?

The nasal bones are different in size and form in every individual. 9. Hyoid Bone. The red-colored part is Hyoid Bone. it is a single “U” shaped bone that is located in the interior part of the neck, between the chin and the thyroid cartilage.

How many vertebrae are there in the neck?

The bones of the neck are usually comprised of 7 cervical vertebrae (Cervical Spine) that support the skull and organs of the head. Following are the 7 cervical vertebrae and some other important bones: 1.

What is the name of the bone that lies in the base of the skull?

5. Sphenoid Bone. It is a single bone that lies in the base of the skull that is between the frontal, temporal and occipital bones. The main parts of the sphenoid bone are Body of sphenoid, lesser wings of sphenoid, greater wings of sphenoids, and pterygoid process.

How many bones are there in the neck?

The neck is quite a complex structure with seven cervical bones, it has a great ability for flexion, extension, and rotation.

What is the phone number for the bone of the head and neck?

If you need any assistance or have a question about Bones of The Head and Neck Functioning and Location, you can consult our HearingSol experts with your problem, feel free to call us on +91-9899437202. We are always here to help you.

How many bones are in the brain?

Although the cranium—the largest section of the skull—might appear to be one solid bone, there are actually 22 bones that encase the brain. Twenty-one of those pieces are fused together by sutures, which are nearly rigid, fibrous joints found only in the skull.

What bone is the eye?

Sphenoid bone. The eye is protected from the hard edges of the bone by fat tissue, which makes movement of the eye smooth. Nerves, blood vessels, ligaments, and other important tissues occupy the rest of the orbit. Last medically reviewed on January 27, 2015.

What is the skull made of?

The skull consists of the cranium and the mandible, or jawbone. It is the semi-circular bone at the bottom of the skull and attached to the cranium at the jaw. The mandible is responsible for the up and down motion of the jaw. The mandible also holds the bottom row of teeth; the maxilla holds the upper row. Mammals, including humans, develop two ...

Why do humans have teeth?

The shape and structure of human teeth serve many purposes. As most humans are omnivores ( eat both plants and animals), their teeth must perform many functions to ensure proper chewing of food. The thin incisors and pointed canines help rip and tear meat, and the premolars and molars help grind down substances so they are easy to swallow.

Important Foramina

The cranial base has multiple foramina and other openings to allow passage to the spinal cord, blood vessels, and cranial nerves. Here are the names of some of the most important foramina, along with the nerves they allow passage to:

Blood Supply

The skull primarily gets its blood supply from the common carotid artery, while the vertebral artery also contributes.

Muscles

The scalp and face muscles are innervated mainly by the facial, oculomotor, or trigeminal nerves. The hypoglossal nerve innervates the tongue. These muscles are responsible for everything from facial expressions, talking, and eating to lifting or lowering our eyebrows and moving our eyes to see.

Content

The brain is one of the most important organs of the human body, governing the functioning of the rest of the body systems. Being protected is essential for survival.

Bony protection of the brain: the skull

When talking about the skull, the totality of bones that are part of the head is usually imagined. This consideration is not entirely correct, since the skull as such is technically the bony structure that covers the brain. The rest of the bones, like those of the jaw, are part of the facial skeleton.

Bones that make up the skull

As we have seen, the skull or neurocranium is made up of a total of eight bones joined and welded throughout the development of the individual in what are known as sutures. All of them have different openings and holes through which blood vessels and nerves circulate.

1. Frontal bone

This bone sits on and protects the frontal lobe. It allows to shape the forehead and reaches the upper part of the vault of the eye or supraorbital margin, being a point of union between the neurocranium and the viscerocranium. It joins with the parietal bones through the coronary suture, and with the nasal bones through the frontonasal suture.

2. Parietal bones

Is about the largest bones of the skull, which form most of the upper and lateral region of this. It is connected to the frontal one by the coronary suture, with the parietal by the squamous suture and with the occipital one by the lambdoid suture. Both parietals are joined together by the sagittal suture.

3. Temporal bones

Two bones each located under one of the parietals and joined to them by squamous sutures. These irregular bones can be divided into three areas: the squamous one that is located around the squamous suture, the mastoid that refers to the part closest to the jaw where various muscles of the jaw and neck sit.

4. Occipital bone

This bone mainly forms the base of the skull, placing the foramen magnum in it or hole where the brain and spinal cord connect. It protects part of the occipital and temporal lobes, the cerebellum and the brain stem. It has several protrusions and ridges that connect with the vertebrae.

How many bones are in the head?

Divided into two parts, rests on the spinal cord and serves as the framework of the head. Consists of 22 bones.

What bones are in the mandible?

The left and right temporal bones comprise the base as well as the sides of the skull. Both temporal bones contain a glenoid fossa, into which the mandible rests.

How many bones are in the roof of the oral cavity?

The roof of the oral cavity made up of four bones.

What is the largest bone in the upper face?

Forms floor of the orbits, floor of the nose and roof of the mouth. Often called the "upper jaw" it is the largest bone in the upper face. Has a body and 4 processes.

Which portion of the sphenoid contains two pterygoid plates?

The winged portion of the sphenoid that contains two "pterygoid plates" (medial plate and lateral plate).

Which process forms the cheek bones?

Joined by the zygomatic process of the maxilla to form the cheek bones .

Where is the single bone located in the nasal cavity?

This single bone is situated at the lower back portion of the nasal cavity. This bone separates the two nasal chambers and are usually unequal in size.

What are the bones that make up the top of the skull?

parts of only four bones forming the top of the skull are observable: the frontal bone, the occipital bone, the left and right parietal bones.

Which bones form the longest portion of the roof of the skull?

The left and right parietal bones form the longest portion of the roof of the skull and the sides of the skull.

What is the unpaired flat bone?

Makes up the forehead and parts of the orbits and nasal cavity. Unpaired flat bone- it is divided into the squamous portion, a small nasal part, and an orbital part. It also surrounds and includes airfilled diverticuli termed the frontal sinus. The frontal bone actually develops from left and right components that typically fuse at an early age.

What is the most significant landmark of the tympanic part of the temporal bone?

The most significant landmark of the tympanic part of the temporal bone is this sound conducting passageway:

What is the bony roof of the oral cavity?

forms the bony roof of the oral cavity. it is composed of parts of the maxillae and the palatine bones

Where is the zygomatic bone located?

a horizontally oriented bony bridge formed between the temporal and zygomatic bones located about halfway between the eye and the ear

Which bone has left and right condyles?

Left and right Condyles of the occipital bone

Anatomy and Structure of The Bones of The Skull

• Cranium
  Also known as the neurocranium or braincase, the cranium is the uppermost part of the skull that encircles and protects the brain, as well as the cerebral vasculature and meninges. The hollow space taken up by the brain is called the cranial cavity. The 8 (2 paired and 4 unpaired) bones fo…
• Facial Skeleton
  The facial skeleton, also known as the viscerocranium, comprises 14 facial bones (2 unpaired and 6 paired). Together, these bones structure our face, cheeks, nose, mouth, and jaws. Here are the bones in the facial skeleton: 1. Maxillae/upper jaw bones (2) 2. Lacrimal bone(2) 3. Zygomatic b…

See more on theskeletalsystem.net

Important Foramina

Blood Supply

Muscles