The human spinal cord is protected by the spinal column, which is made up of bones called vertebrae. Each vertebra consists of the spinous process, transverse process and body. The spinal cord passes through the vertebral foramen, the middle opening in the vertebrae.Know More
The spinal cord is a bundle of nerve fibers that transmits information between the brain and the peripheral nervous system. It is a conduit for motor information that travels down the spinal cord, a conduit for sensory information that travels up the spinal cord and a center to coordinate reflexes. The spinal cord consists of 31 segments that span approximately 43 centimeters in length in women and 45 centimeters in men. Two spinal nerves branch from each segment of the spinal cord.
Different spinal nerves perform different functions. Cranial spinal nerves transmit signals to the back of the head, neck, shoulders, arms, hands and diaphragm. The thoracic spinal nerves control the signals to the chest muscles and parts of the back and abdomen. Lumbar spinal nerves transmit signals to the lower parts of the abdomen, back and buttocks and parts of the leg. Finally, the sacral spinal nerves control the signals to the lower legs, thighs and feet.Learn more about Bones
Bones are important because they provide a frame for the body, protect organs, anchor muscles and store calcium. Humans have 206 lightweight and strong bones that support the body’s total weight.Full Answer >
The brain is protected by one of two main parts of the skull called the neurocranium, which actually consists of eight different bones. The neurocranium includes the frontal bone, two parietal bones, two temporal bones, occipital, sphenoid and ethmoid bones.Full Answer >
Disc protrusion or slipped discs refer to injuries to the discs of tissue dividing the vertebrae of the spinal column. The pain can arise anywhere along the spinal column or backbone, including the neck, back of the chest or lower back, reports The Spinal Foundation.Full Answer >
As a child grows, the bones fuse, or grow together, and the cartilage present in a child's body turns into bone because of calcium. Babies are born with 300 bones in their bodies and by the time they reach adulthood, they have 206 bones.Full Answer >