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These medical icons will be a great aid when building applications for fitness or health-related projects.
If i buy all icons 960840 then i can use them for life time or every year do i need to renewal the license?
Once you buy the icons you can use them for commercial purposes for a lifetime, no renewals required. They come in a variety of styles going from flat and minimal to shiny and filled with detail. You can always make use of the original source files to make any changes as you go, or take advantage of the multiple formats they are already exported in. The spinal cord is surrounded for most of its length by the bones (vertebrae) that form the spine.How long is the spinal cord?The human spinal cord, part of the central nervous system, is generally around 17 inches long, and extends from the brain to the lower back. Your spinal cord is protected by the vertebral column (also known as the spinal column or backbone).
These are bundled into specialized tracts that conduct impulses triggered by pressure, pain, heat, and other sensory stimuli or conduct motor impulses activating muscles and glands. Within the gray matter, running the length of the cord and extending into the brain, lies the central canal through which the cerebrospinal fluid circulates.A spinal cord injury (SCI) can occur anywhere along the spinal cord.
It is the result of damage to cells in the spinal cord and causes a loss of communication between the brain and the parts of the body below the injury. Its chief peculiarity is that it has no body, and this is due to the fact that the body of the atlas has fused with that of the next vertebra.C2 AxisForms the pivot upon which C1 rotates. The most distinctive characteristic of this bone is the strong odontoid process (dens) which rises perpendicularly from the upper surface of the body.
The body is deeper in front than behind, and prolonged downward anteriorly so as to overlap the upper and front part of the third vertebra. Injuries to C-1 and C-2 can result in a loss of many involuntary functions including the ability to breathe, necessitating breathing aids such as ventilators or diaphragmatic pacemakers.C3Injury to spinal bone three often causes pain, tingling, and sometimes numbness in the arms, neck, and head. If the fourth cervical vertebrae (C4) nerve root is also involved, pain is usually felt in the upper arms and shoulders, as well as the lower neck.C4 Cervical VertebraQuadriplegia and breathing difficulty - The fourth cervical (neck) vertebra from the top. Injuries above the C-4 level may require a ventilator for the person to breathe properly.C5Quadriplegia with some shoulder and elbow function - 5th cervical vertabrae down from the base of the skull, found in the neck. C5 injuries often maintain shoulder and biceps control, but have no control at the wrist or hand. C5 to C8 Iinjuries - Corresponding nerves control the arms and hands, a person with this level of spinal injury may still be able to breathe on their own and speak normally.C6 Cervical VertebraQuadriplegia with shoulder, elbow, and some wrist function - The sixth cervical (neck) vertebra from the top. These injuries generally allow wrist control, but no hand function.C7 Vertebra ProminensQuadriplegia with shoulder, elbow, wrist, and some hand function - The most distinctive characteristic of this vertebra is the existence of a long and prominent spinous process, hence the name vertebra prominens. In some subjects, the seventh cervical vertebra is associated with an abnormal pair of ribs, known as cervical ribs. These ribs are usually small, but may occasionally compress blood vessels (such as the subclavian artery) or nerves in the brachial plexus, causing unpleasant symptoms.
C-7 and T-1 can straighten their arms but still may have dexterity problems with the hand and fingers. All nerves except C8 emerge above their corresponding vertebrae, while the C8 nerve emerges below the C7 vertebra.
In other words C8 is a nerve root not a vertebrae.Thoracic Vertebrae (T1 to T12)The thoracic vertebrae increase in size from T1 through T12 and represent the 12 thoracic vertebrae.

The thoracic vertebrae are situated between the cervical (neck) vertebrae and the lumbar vertebrae. These thoracic vertebrae provide attachment for the ribs and make up part of the back of the thorax or chest.
Injuries below the T1 vertebra affect the legs and trunk below the injury, but usually do not affect the arms and hands. Paralysis of the arms AND legs is called quadriplegia.The most common fractures of the spine occur in the thoracic (midback) and lumbar spine (lower back) or at the connection of the two (thoracolumbar junction).
The T1 vertebra is the first (uppermost) of the twelve (12) thoracic vertebrae that make up the central and largest section of the spinal column between the lumbar vertebrae below and the cervical vertebrae above.T2The second vertebra in the thoracic spine is responsible for helping to support the rib cage.
The T2 vertebra possesses facets that create joints with two of the ribs, thus helping to keep the thoracic spine far more stable than the cervical spine in the neck or the lumbar spine in the lower back. The anterior aspect of the upper thoracic spine is a difficult region to approach in spinal surgery.T4Spinal cord transection at T4 results in severe damage of the nervous tissue, with impairment of motor, sensory and autonomic functions.
Thoracic vertebrae play an important role, not only in the protection of the spinal cord, but also in the protection of vital organs. A vertebral compression fracture refers to a break of the vertebral body, most often below the T7 level of the thoracic spine (upper back), and is most commonly caused by weakened bone resulting from osteoporosis. Most vertebral compression fractures result in a loss of more than 15% to 20% of the height of the vertebra.T8T8 vertebra is toward the lower (caudal) end of the twelve (12) thoracic vertebrae within the central, torso section of the spine. Throughout the thoracic spine, discs like those above and beneath the T8 vertebra can become damaged and cause painful symptoms.T9T9 to T12 are known as the transition vertebrae.
Complete injuries result in the total loss of movement and sensation below the point of injury, while incomplete injuries indicate that some function below the level of injury is retained.T10T10 is situated at the umbilicus.
The T10 vertebra is near to the bottom of the twelve (12) thoracic vertebrae (T1-T12) within the torso and making up the central portion of the spinal column.
This particular vertebra has a complete articular facet and the thoracic spinal nerves passes out under it. It is part of the section of the spinal cord which is most vulnerable to injury due to the area's high level of flexibility. An injury in this area will most likely experience limited or complete loss of use of the muscles in the lower abdomen, buttocks, legs, and feet. Partial damage may cause weakness, numbness, lack of muscle control, or loss of the use of one side of the lower body.
Complete damage could result in the loss of use of the lower body (paraplegia).T11The ribs connected to T11 and T12 at the bottom of the thoracic spine do not attach the sternum in front, but do provide protection for the kidneys in the back of the body. Because these levels have slightly less stability, they are slightly more prone to problems that can cause pain.
A person with a T11 vertebral injury may have or recover sensations in the L1 through L4 dermatomes which include the front of the leg down to the mid-shin level. In addition, such a patient should recover hip extensors, knee extensors, and even ankle dorsiflexion. However, the sacral functions, including bowel and bladder and many of the flexor functions of the leg may be absent or weak.T12T12 ends just above the hip girdle.
T12 bears the most weight of any thoracic vertebra, making it the strongest thoracic vertebra, but also the most susceptible to stress-related injuries. Compression fractures of the spine usually occur at the bottom part of the thoracic spine (T11 and T12) and the first vertebra of the lumbar spine (L1). The most common thoracic spinal cord injury involves T11 and T12.Lumbar Vertebrae (L1 to L5)Lumbar nerves (L1 to L5) injuries generally result in some loss of function in the hips and legs.

Often there is little or no voluntary control of bowel or bladder, but patients usually manage on their own with the use of special equipment.
Depending on strength in the legs, some patients may need a wheelchair and may also walk with braces.The lumbar vertebrae graduate in size from L1 through L5. The lumbar vertebrae are also the largest segments of the movable part of the vertebral column, and are characterized by the absence of the foramen transversarium within the transverse process, and by the absence of facets on the sides of the body. Lumbar disorders that normally affect L5 will affect L4 or L6 in these individuals.L1The first lumbar vertebra is at the same level as the ninth rib.
The L3 vertebra, or third lumbar vertebra, is one of the most common sites for the occurrence of a herniated disc and other spinal conditions that can cause chronic lower back pain. A lot of motion in the back is divided between these five motion segments with segments L3 - L4 and L4 - L5 taking most of the stress. L3 - L4 and L4 - L5 segments are most likely to breakdown from wear and tear causing such conditions as osteoarthritis.
L2 and L3 cover the front part of the thighs.L4The most likely to herniate (herniated disc, bulging disk, compressed disk, herniated intervertebral disk, herniated nucleus pulposus, prolapsed disk, ruptured disk, slipped disk). The effects of this can cause pain and numbness that can radiate through the leg and extend down to the feet (sciatica). Spondylolysis and spondylolisthesis are conditions that affect the moveable joints of the spine that help keep the vertebrae aligned one on top of the other. Spondylolysis is actually a weakness or stress fracture in one of the bony bridges that connects the upper and lower facet joints. This fracture can happen at any level of the spine but usually occurs at the fourth (L4) or fifth (L5) lumbar vertebra. L4 and L5 fractures are commonly the result of a high impact trauma from falls or motor vehicle accidents.L5The fifth lumbar vertebra (L5) is the largest of the five lumbar vertebrae and is considered an atypical vertebra due to its shape. As the last of the lumbar vertebrae, the L5 vertebra bears more body weight than any of the other 23 vertebrae that sit atop it in the vertebral column. Sacral Nerves (S1 to S5) injuries generally result in some loss of functionin the hips and legs.
Little or no voluntary control of bowel or bladder, but patients can manage on their own with special equipment Most likely they will also still be able to walk.Sacral Nerves (S1 to S5)The sacrum is shaped different in males and females.
The sacrum fits between the two hipbones connecting the spine to the pelvis located just below the lumbar vertebrae.The Sacrum consists of four or five sacral vertebrae in a child, which become fused into a single bone after age 26.
The sacrum forms the back wall of the pelvic girdle and moves with it.The first three vertebrae in the sacral have transverse processes which come together to form wide lateral wings called alae.
These alae articulate with the blades of the pelvis (ilium).As part of the pelvic girdle, the sacrum forms the back wall of the pelvis and also forms joints at the hip bone called the sacroiliac joints. The sacrum contains a series of four openings on each side through which the sacral nerves and blood vessels run.
Many muscles connect to the coccyx.Sacral Nerves (S1 to S5) injuries generally result in some loss of function in the hips and legs.

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