Key facts about head and neck anatomyTable quiz
| Skull | Comprised of 22 bones: (Frontal bone, pa ... |
| Nose | Composed of nasal cartilages and nasal b ... |
| Eye | Consists of ocular bulbs (eyeballs) with ... |
| Ear | Comprised of outer, middle and inner ear ... |
| Mouth/oral cavity | Consists of teeth, tongue, hard and soft ... |
What are the names of the bones in the neck?
Structure
- Muscles and triangles. Muscles of the neck attach to the skull, hyoid bone, clavicles and the sternum. ...
- Nerve supply. Sensation to the front areas of the neck comes from the roots of the spinal nerves C2-C4, and at the back of the neck from the roots of ...
- Blood supply and vessels
- Surface anatomy. ...
How many vertebrae does a human have in the neck?
The spinal column contains about two dozen inter-connected, oddly shaped, bony segments, called vertebrae. The neck contains seven of these, known as the cervical vertebrae. They are the smallest and uppermost vertebrae in the body. The spinal column extends from the base of the skull to the pelvis.
How many bones does a does a human have in its neck?
BONES OF THE NECK ( 8) The human neck has eight bones: the seven cervical vertebrae and the hyoid bone. Second cervical vertebra or Axis ( C2 ). Third cervical vertebra ( C3 ).
How many bones do you have in your neck?
There are seven bones in the neck, or cervical spine. Each bone is called a vertebra. (This answer provided for NATA by the University of Alabama Athletic Training Education Program.) Show More.
How many bones are in the head?
Introduction. 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.
How many bones are there in the neck?
seven bonesThese are the seven bones of the neck, called the cervical vertebra. The top bone, seen on the right of this picture, is called the atlas, and is where the head attaches to the neck.
What are the bones of the head and neck?
The skeletal section of the head and neck forms the top part of the axial skeleton and is made up of the skull, hyoid bone, auditory ossicles, and cervical spine. The skull can be further subdivided into: the cranium (8 bones: frontal, 2-parietal, occipital, 2-temporal, sphenoid, ethmoid), and.
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 are the 7 bones in the neck?
Position of human cervical vertebrae (shown in red). It consists of 7 bones, from top to bottom, C1, C2, C3, C4, C5, C6, and C7.
What bones are in the neck?
The skeleton of the neck is formed by the cervical vertebrae, the hyoid bone, and the manubrium of the sternum which are part of the axial skeleton, as well as the clavicles which are part of the appendicular skeleton.
What are the 22 bones of the skull?
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 ...
What are the head bones called?
craniumyour skull! Your 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.
What are 8 cranial bones?
There are eight cranial bones, each with a unique shape:Frontal bone. This is the flat bone that makes up your forehead. ... Parietal bones. This a pair of flat bones located on either side of your head, behind the frontal bone.Temporal bones. ... Occipital bone. ... Sphenoid bone. ... Ethmoid bone.
What are the 29 skull bones?
Head bones: The 29 head bones consist of 8 cranial bones, 14 facial bones, the hyoid bone, and 6 auditory (ear) bones. The 8 cranial bones are the frontal, 2 parietal, occipital, 2 temporal, sphenoid, and ethmoid bones.
What are the 14 facial 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)
How many bones are in the ear?
threeThe middle ear contains three tiny bones: Hammer (malleus) — attached to the eardrum. Anvil (incus) — in the middle of the chain of bones. Stirrup (stapes) — attached to the membrane-covered opening that connects the middle ear with the inner ear (oval window)
What are the bones of the head and neck?
Bones of the Head and Neck. The bones of the head and neck play the vital role of supporting the brain, sensory organs, nerves, and blood vessels of the head and protecting these structures from mechanical damage. Movements of these bones by the attached muscles of the head provide for facial expressions, eating, speech, and head movement.
How many bones are in the skull?
Movements of these bones by the attached muscles of the head provide for facial expressions, eating, speech, and head movement. The skull consists of 22 cranial and facial bones, which, with the exception of the mandible, are tightly fused together.
Which vertebrae form the bones of the neck that support the skull and organs of the head?
They form a bridge connecting the eardrum to the inner ear and function to transmit vibrations between these parts. The 7 cervical vertebrae form the bones of the neck that support the skull and organs of the head. The first cervical vertebra (atlas) supports and balances the head.
What is the bone that houses the digestive tract?
Another important bone of the head and neck is the hyoid bone. The hyoid is closely associated with the skull but is a “floating bone” that does not form a joint with any other bone.
What are the hollow spaces in the cervical vertebrae?
Hollow spaces within the cervical vertebrae protect and conduct the spinal cord and vertebral arteries through the neck. Muscle attachment sites on the cervical vertebrae provide movement and posture to the head and neck.
Where are attachment points located in the anatomy system?
Toggle Anatomy System. Continued From Above... Attachment points for the muscles of the head and neck are located on the exterior surfaces of the skull and allow for important movement like chewing, speech, and facial expressions. Teeth are rooted into deep sockets in the mandible and maxillary bones.
What bones are in the skull?
As you can see from the above skull diagram, there are quite a lot of skull bones. In fact, there are twenty three in total, some of which are paired: Ethmoid bone . Frontal bone .
What is the neck divided into?
From the outside, the neck is divided into triangles, each one containing specific muscles, vessels, and nerves. In turn, however, the neck also has an internal division in the form of compartments, which are delimited by various layers of cervical fascia.
What are the major nerves in the oral cavity?
In turn, the major nerves are the maxillary (CN V2), mandibular (CN V3), vagus (CN X), hypoglossal (CN XII), and facial (CN VII) cranial nerves. Check out the following learning materials to learn more about the oral cavity and its structures. Overview of the oral cavity Explore study unit.
How many cavities are there in the nasal cavity?
There are two cavities in total, separated by the nasal septum. Each cavity contains three seashell-like structures called nasal conchae and below them we can find the spaces called nasal meatuses, which house the nasal openings of the various paranasal sinuses located within your head and skull.
What is the skull?
The skull is a strong, bony capsule that rests on the neck and encloses the brain. It consists of two major parts: the neurocranium (cranial vault) and the viscerocranium (facial skeleton). The neurocranium is the part enveloping the brain and is formed out of two parts; the skull base that supports the brain and the calvaria (skullcap) that sits on top of the base, covering the brain. The viscerocranium supports mainly the facial muscles and a variety of anatomical structures.
What are the four main arteries that pass through the neck?
The four main arteries passing through the neck and/or supplying it are the common carotid, external carotid, internal carotid, and facial arteries together with the thyrocervical trunk. The cervical plexus is the main structure innervating or passing through the neck.
What is the mouth of the head?
Mouth. Another major facial feature of the head that is clearly visible, and also heard, is the mouth. Anatomically called the oral cavity . It is the first component of the digestive system and takes a major role in the mechanical digestion and mixing of food.
How many bones are there in the skull?
Anatomy. The term 'the skull' includes all the bones of the head, face and jaws. Within this capacity, there are twenty eight individual bones. Of these twenty eight bones, eleven of them are paired, to form a bilaterally symmetrical three dimensional structure and six of them are single, unique bones. In some cases sutural bones, also known as ...
What is the skull made of?
The skull contains all the bones of the head and is a shell for the brain and the origins of the central nervous system. A first glance shows that this is one large mass of detailed and irregular bone. Upon closer inspection however, it seems that it is intricately constructed of many smaller bone fragment pairs, all unique in shapes and sizes, ...
What causes a skull fracture?
The most probable cause for trauma to the skull is a car accident, violence and then sports injuries, in that order. The fractures that occur due to these traumas can occur in certain areas of the skull and are named according to the these areas in a list seen below: 1 Frontobasal fractures cause injury to the forehead and the base of the skull in the occipital bone; 2 Blow-out fractures damage the floor of the orbit; 3 lateral and midfacial fractures harm the frontal and lateral areas of the face; 4 Mandibular fractures occur anywhere on the mandible, with the most common area being the condyle; 5 Le Fort fractures occur in three areas range from the maxilla (Le Fort I), the midface (Le Fort II), to the border of the viscerocranium and the neurocranium (Le Fort III) and incorporate various facial bones.
What are the bones that grow between the sutures of two bones?
In some cases sutural bones, also known as wormian bones may grow between the sutures of two bones. These occur naturally and are not counted among the primary cranial bones. The skull bones are categorized into regional and development bones.
What are the subregions of the cranium?
Regional classification. (1) Region of the cranium, subregions: - cranial vault - upper portion of the skull. - cranial base - inferior portion of the skull. - cranial cavity - interior of the skull (subregions: anterior, middle, posterior cranial fossae) - facial skeleton - bones that make up the face. - acoustic skeleton - ear ossicles.
Which fossa contains the cerebellum?
The last fossa, named the posterior cranial fossa, contains the cerebellum. Finally, it is to be noted that there a several different views of the skull, that when separate from the body in its entirety, are possible without hindrance from other structures.
Which of the five senses is regulated by the oral cavity?
These five senses and their corresponding organs are: Olfaction or sense of smell which is accommodated by the nasal cavity; Vision which is hosted by the eye; Taste which is regulated by the oral cavity; Vestibular function and auditory function, simply known as movement or touch and hearing.
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?
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. The sphenoid bone is a butterfly-shaped bone consisting of a body, and upper and lower wings. The sphenoid bone contains the sphenoid sinuses.
Which bone contains the sphenoid sinuses?
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.
1. INTRODUCTION
Below you will find a list and an image with all the bones of the human neck.
2. BONES OF THE NECK ( 8)
The human neck has eight bones: the seven cervical vertebrae and the hyoid bone.
