cervical vertebral c5-6
The hyoid bone is at the level/in line with the third cervical (C3) vertebra.
The bifurcation (splitting) of the common carotid artery is in line with/at the level of the intervertebral disc between the third and fourth cervical vertebral (between C3 and C4).
the thyroid cartilage is the largest. It also forms the Adam's Apple in case of males due to high level of Testosterone after puberty.
The thyroid is one of the largest endocrine glands in the body. This gland is found in the neck inferior to (below) the thyroid cartilage (also known as the Adam's apple in men) and at approximately the same level as the cricoid cartilage. The thyroid controls how quickly the body burns energy, makes proteins, and how sensitive the body should be to other hormones.http://en.wikipedia.org/wiki/Thyroid
S3
It is a protrusion (herniation) of disc material near the center of the spine (paracentral), in this case just to the right of center. The C6 designation indicates the herniation is located in the Cervical spine (neck) at the level of the 6th cervical vertebral space (there are a total of seven cervical vertebra -- C1 through C7). A couple of useful reference/education sites are www.spineuniverse.com and www.spine-health.com. Hope this helps!Bunny
The sternal angle of Louis is located at the level of the second rib and the intervertebral disc between the fourth and fifth thoracic vertebrae (T4-T5).
Fourth thoracic
There is more white matter at the cervical level compared to the sacral level because the cervical region has a higher concentration of ascending sensory pathways traveling from the body to the brain. These pathways require more white matter for transmission of these sensory signals. Additionally, the cervical region has a larger proportion of corticospinal tracts responsible for motor control, which also contribute to the increased white matter volume.
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Osteoarthritis can cause the breakdown of cartilage between facet joints. This causes pain as well as loss of motion and stiffness.The facet joints are in the back portion or posterior of the spine. They combine with the disc space to create a three joint complex at each vertebral level. These joints consist of two opposing bony surfaces that should have cartilage between them and a capsule around it that produces fluid.The cartilage and the fluid combine to allow the joint to move with little friction. However, with facet joint arthritis, the cartilage breaks down causing more friction with joint movement. This leads to a loss of motion stiffness and back pain.