Final answer:
True, spinal discs are composed of thick, fibrous connective tissue called the anulus fibrosus, surrounding a softer gel-like center, the nucleus pulposus. These components work together to cushion the spine, facilitate movement, and serve as ligaments binding the vertebrae together. Age-related changes in the discs can affect their functionality and overall spinal health.
Step-by-step explanation:
True, spinal discs are composed of a thick, fibrous connective tissue. These structures, also known as intervertebral discs, consist of two parts: a tough outer layer called the anulus fibrosus and a softer, gel-like interior known as the nucleus pulposus. Together, they provide cushioning and support between the vertebral bodies and facilitate movement within the spinal column.
The anulus fibrosus is the sturdy, fibrous component that encapsulates the disc, providing robust connections to the adjacent vertebrae. The inner nucleus pulposus consists of a gel-like substance with high water content, contributing to the disc's ability to absorb shock and bear weight. As we age, the water content in the nucleus pulposus decreases, leading to a reduction in disc flexibility and shock absorption, which can impact spinal movement and overall body height.
Intervertebral discs are essential for providing padding during weight-bearing activities, such as walking and running, and acting as ligaments that bind vertebrae together. They vary in thickness depending on their location within the spine, with the thickest discs in the lumbar region where the most body weight is carried. The capacity of the discs to adapt their shape allows for significant spine mobility, yet if the anulus fibrosus weakens or gets damaged, it can lead to disc protrusion or herniation, causing pain and other complications.