Bands of tissue called ligaments and tendons hold the bones of the spine, called vertebrae, in place and attach the muscles of the back to the spinal column.
What keeps the spine together?
The facet joints link the vertebrae together and give them the flexibility to move against each other. Each vertebra has a hole in the center, so when they stack on top of each other they form a hollow tube that holds and protects the entire spinal cord and its nerve roots.
What three things hold the spine together?
Systems of strong fibrous bands of ligaments hold the vertebrae and discs together and stabilize the spine by helping to prevent excessive movements. The 3 major spinal ligaments are the (1) anterior longitudinal ligament, (2) posterior longitudinal ligament and (3) ligamentum flavum.
What holds the spinal cord in position?
The cord extends from the skull to the lower back. Thirty-one pairs of nerves branch out through vertebral openings (the neural foramen). These nerves carry messages between the brain and muscles. Soft tissues: Ligaments connect the vertebrae to hold the spine in position.
Does your spine hold your back?
When most people mention their back, what they are actually referring to is their spine. The spine runs from the base of your skull down the length of your back, going all the way down to your pelvis. It is composed of 33 spool-shaped bones called vertebrae, each about an inch thick and stacked one upon another.
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.
What are the 5 areas of the spine?
The spine is composed of 33 bones, called vertebrae, divided into five sections: the cervical, thoracic, and lumbar spine sections, and the sacrum and coccyx bones. The cervical section of the spine is made up of the top seven vertebrae in the spine, C1 to C7, and is connected to the base of the skull.
What absorbs shock in the spine?
The intervertebral discs are soft structures which act as shock absorbers between each of the vertebrae (bones) in the spine. A single disc sits between each vertebra. Each intervertebral disc has a strong outer ring of fibres (‘annulus’), and a soft, jelly-like centre (nucleus).
Which portions of the spine are the most vulnerable to injury?
The majority of fractures and dislocations of the spinal column occur in the cervical spine because it is the most mobile portion of the spinal column, and understandably, the most vulnerable to injury.
Is lumbar part of spine?
The lumbar region of the spine, more commonly known as the lower back, consists of five vertebrae labeled L1 through L5. The lumbar region is situated between the thoracic, or chest, region of the spine, and the sacrum. The lumbar spine typically has a slight inward curve known as lordosis.
What is natural shape of spine?
The normal spine has an S-shaped curve when viewed from the side. This shape allows for an even distribution of weight and flexibility of movement. The spine curves in the following ways: The cervical spine curves slightly inward, sometimes described as a backward C-shape or lordotic curve.