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Anatomy, Head and Neck: Cervical Vertebrae [1]
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Treasure Island (FL): StatPearls Publishing; 2023 Jan-.. The spine, or vertebral column, is a segmental set of 33 bones and associated soft tissues that comprise the subcranial portion of the axial skeleton
There are seven, twelve, and five articulating vertebrae in the cervical, thoracic, and lumbar spine. While somewhat similar in terms of bone morphology, these three regions variably balance spinal rigidity with flexibility and movement and articulate in a particular fashion that contributes to the overall S-shaped curvature of the spine
Cervical vertebrae [2]
In tetrapods, cervical vertebrae (singular: vertebra) are the vertebrae of the neck, immediately below the skull. Truncal vertebrae (divided into thoracic and lumbar vertebrae in mammals) lie caudal (toward the tail) of cervical vertebrae.[1] In sauropsid species, the cervical vertebrae bear cervical ribs
The vertebral transverse processes of mammals are homologous to the cervical ribs of other amniotes.[citation needed] Most mammals have seven cervical vertebrae, with the only three known exceptions being the manatee with six, the two-toed sloth with five or six, and the three-toed sloth with nine.[2][3]. In humans, cervical vertebrae are the smallest of the true vertebrae and can be readily distinguished from those of the thoracic or lumbar regions by the presence of a foramen (hole) in each transverse process, through which the vertebral artery, vertebral veins, and inferior cervical ganglion pass
By convention, the cervical vertebrae are numbered, with the first one (C1) closest to the skull and higher numbered vertebrae (C2–C7) proceeding away from the skull and down the spine. The general characteristics of the third through sixth cervical vertebrae are described here
Cervical Spine (Neck): What It Is, Anatomy & Disorders [3]
Your cervical spine — the neck area of your spine — consists of seven stacked bones called vertebrae. The first two vertebrae of your cervical spine are unique in shape and function
It’s named after Atlas, of Greek mythology, who held the world on his shoulders. Your second vertebra (C2), also called the axis, allows the atlas to pivot against it for the side-to-side “no” rotation of your head.
Your cervical spine is also surrounded by muscles, nerves, tendons and ligaments. “Shock-absorbing” disks, called intervertebral disks, are positioned between each vertebra
How Many Cervical Vertebrae Do You Have? [4]
I recently received an email from a yoga teacher buddy asking how many vertebrae we have in our spines, specifically how many cervical vertebrae. The easiest way to remember the number of vertebrae in a normal spine is to remember your meal times
Starting from the top of your spine, you have seven cervical vertebrae, 12 thoracic vertebrae, and five lumbar vertebrae. The cervical vertebrae are in your neck region, the thoracic in your chest region, and the lumbar are in your low back.
For example, the third cervical vertebra (counting from the top down) would be C3, and the second lumbar vertebra would be L2, and so on.. Adding that up… 7+12+5=24! But wait! If you look up how many vertebrae we have, everything says 33! How can that be? The answer is in your sacrum and coccyx (tailbone)
Cervical Spine – Anatomy, Diseases and Treatments [5]
The neck is part of a long flexible column, known as the spinal column or backbone, which extends through most of the body. The cervical spine (neck region) consists of seven bones (C1-C7 vertebrae), which are separated from one another by intervertebral discs
Attached to the back of each vertebral body is an arch of bone that forms a continuous hollow longitudinal space, which runs the whole length of the back. This space, called the spinal canal, is the area through which the spinal cord and nerve bundles pass
At each vertebral level, a pair of spinal nerves exit through small openings called foraminae (one to the left and one to the right). These nerves serve the muscles, skin and tissues of the body and thus provide sensation and movement to all parts of the body
The Cervical Spine [6]
The cervical spine is the most superior portion of the vertebral column, lying between the cranium and the thoracic vertebrae.. It consists of seven distinct vertebrae, two of which are given unique names:
– The second cervical vertebrae (C2) is known as the axis.. In this article, we shall look at the anatomy of the cervical vertebrae – their characteristic features, articulations and clinical relevance.
– Bifid spinous process – this is where the spinous process splits into two distally.. – Transverse foramina – holes in the transverse processes
Mayfield Brain & Spine, Cincinnati [7]
The spine is made of 33 individual bones stacked one on top of the other. This spinal column provides the main support for your body, allowing you to stand upright, bend, and twist, while protecting the spinal cord from injury
Yet, any of these structures affected by strain, injury, or disease can cause pain.. When viewed from the side, an adult spine has a natural S-shaped curve
The curves work like a coiled spring to absorb shock, maintain balance, and allow range of motion throughout the spinal column.. The abdominal and back muscles maintain the spine’s natural curves
Cervical Spine Anatomy: Overview, Gross Anatomy [8]
The first 2, C1 and C2, are highly specialized and are given unique names: atlas and axis, respectively. C3-C7 are more classic vertebrae, having a body, pedicles, laminae, spinous processes, and facet joints.
C1 serves as a ring or washer that the skull rests upon and articulates in a pivot joint with the dens or odontoid process of C2. Approximately 50% of flexion extension of the neck happens between the occiput and C1; 50% of the rotation of the neck happens between C1 and C2.
Unlike the other parts of the spine, the cervical spine has transverse foramina in each vertebra for the vertebral arteries that supply blood to the brain.. The cervical spine is made up of the first 7 vertebrae, referred to as C1-7 (see the images below)
Cervical spine [9]
The cervical portion of the spine is an important one anatomically and clinically. It is within this region that the nerves to the arms arise via the brachial plexus, and where the cervical plexus forms providing innervation to the diaphragm among other structures
To understand this intricate region, we will consider the bony structures first, and then discuss the ligaments, nerves, and musculature that are associated with this region of the spinal column, concluding with some clinical implications of damage to some of these structures.. |Types of vertebrae||Typical (C3-C6), atypical (C1, C2, C7)|
|Intervertebral discs||Consisting of an inner component called the nucleus pulposus surrounded by the annulus fibrosus, they allow the vertebrae to move and act as shock absorbers.|. Continuations from thoracic spine: anterior longitudinal ligament, posterior longitudinal ligament, ligamentum flavum, intertransverse ligament, interspinous ligament, nuchal ligament
Anatomy of the Spine [10]
By clicking to continue, you will be taken to a web site governed by their own Legal and Privacy Policies.. Your spine is one of the most important parts of your body
Your spine allows you to move about freely and to bend with flexibility. The spinal cord is a column of nerves that connects your brain to the rest of your body, allowing you to control your movements
Keeping your spine healthy is vital if you want to live an active life.. The spine is made up of 33 bones (including the sacrum and the coccyx)
Cervical Vertebrae: Anatomy, Function, Conditions [11]
Anatomy Bones The Anatomy of the Cervical Vertebrae The Bones of Your Neck By Brett Sears, PT Brett Sears, PT Facebook LinkedIn Twitter Brett Sears, PT, MDT, is a physical therapist with over 20 years of experience in orthopedic and hospital-based therapy. Learn about our editorial process Updated on May 19, 2021 Medically reviewed by Eva Umoh Asomugha, M.D
Learn about our Medical Expert Board Print Table of Contents View All Table of Contents Anatomy Function Associated Conditions Rehabilitation Your neck, also known as the cervical spine, is a complex series of bones, discs, muscles, nerves, and ligaments. There are seven bones, each called a cervical vertebra, that are stacked upon one another
Melena-Nsk / Getty Images Anatomy The seven cervical vertebrae can be divided into two groups: atypical vertebrae and typical vertebrae. Atypical Vertebrae The atypical vertebrae are cervical level one and two (C1 and C2)
Understanding Spinal Anatomy: Regions of the Spine – Cervical, Thoracic, Lumbar, Sacral [12]
The regions of the spine consist of the cervical, thoracic, lumbar, and sacral.. The neck region of the spine is known as the Cervical Spine
These vertebrae protect the brain stem and the spinal cord, support the skull, and allow for a wide range of head movement.. The first cervical vertebra (C1) is called the Atlas
Together, the Atlas and Axis enable the head to rotate and turn. The other cervical vertebrae (C3 through C7) are shaped like boxes with small spinous processes (finger-like projections) that extend from the back of the vertebrae.
Sources
- https://www.ncbi.nlm.nih.gov/books/NBK539734/
- https://en.wikipedia.org/wiki/Cervical_vertebrae
- https://my.clevelandclinic.org/health/articles/22278-cervical-spine
- https://yogauonline.com/yoga-anatomy-2/how-many-cervical-vertebrae-do-you-have/
- https://www.aans.org/en/Patients/Neurosurgical-Conditions-and-Treatments/Cervical-Spine
- https://teachmeanatomy.info/neck/bones/cervical-spine/
- https://mayfieldclinic.com/pe-anatspine.htm
- https://emedicine.medscape.com/article/1948797-overview
- https://www.kenhub.com/en/library/anatomy/cervical-spine
- https://www.jnjmedtech.com/en-US/treatment/spine/anatomy
- https://www.verywellhealth.com/cervical-vertebra-4774617
- https://www.coloradospineinstitute.com/education/anatomy/spinal-regions/
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