Frequent question: How long is the spinal cord in most adults?

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How long is an adults spinal cord?

The spinal cord is 40 to 50 cm long and 1 cm to 1.5 cm in diameter. Two consecutive rows of nerve roots emerge on each of its sides. These nerve roots join distally to form 31 pairs of spinal nerves.

How far does the spinal cord extend on an adult?

The spinal cord extends down to between the first and second lumbar vertebrae, where it ends. The enclosing bony vertebral column protects the relatively shorter spinal cord. It is around 45 cm (18 in) long in adult men and around 43 cm (17 in) long in adult women.

How long is the average person’s spine?

The human spinal cord, part of the central nervous system, is around 45 cm (18 in) in men and around 43 cm (17 in) long in women.

Is spinal cord different from spine?

The spinal cord and meninges are contained in the spinal canal, which runs through the center of the spine. In most adults, the spine is composed of 33 individual back bones (vertebrae). Just as the skull protects the brain, vertebrae protect the spinal cord.

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What happens if your spinal cord hurts?

Emergency signs and symptoms of a spinal cord injury after an accident include: Extreme back pain or pressure in your neck, head or back. Weakness, incoordination or paralysis in any part of your body. Numbness, tingling or loss of sensation in your hands, fingers, feet or toes.

What part of the spine controls the heart?

Thoracic (mid back) – the main function of the thoracic spine is to hold the rib cage and protect the heart and lungs. The twelve thoracic vertebrae are numbered T1 to T12.

Where does spinal cord end in adults?

In adults, the cord terminates at the level of L1-L2. Thus the cord spans within 20 bony vertebrae. In a child, it terminates at the upper border of L3.

What part of your spine controls your legs?

The nerves of the cervical spine go to the upper chest and arms. The nerves in your thoracic spine go to your chest and abdomen. The nerves of the lumbar spine then reach to your legs, bowel, and bladder. These nerves coordinate and control all the body’s organs and parts, and let you control your muscles.

How much weight do you need to break your spine?

It is hard to quantify how much force it would take to break a human spine, Bydon said. But studies have shown, he added, that it would require a force greater than 3,000 newtons to fracture the cervical spine. That’s equal to the impact created by a 500-pound car crashing into a wall at 30 miles per hour.

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How heavy is the human spine?

However, if the number of vertebrae per segment is taken into consideration, the average weight per unit vertebra in a segment increased caudad from 6.3 gm in the cer- vical to 8.7 gm in the thoracic, to 17.9 gm in the lumbar segment.