The tailbone in the spine that is made up of four vertebrae fused into one or two bones.
A small bone located at the bottom of the spinal column, coccygeal spine.
The lowest bone in the backbone.
Four fused, partly developed vertebrae forming the tailbone in humans.
Tailbone; a group of several small, fused vertebrae that are not individually numbered.
The lowermost element of the backbone: the vestigial human tail. It consists of four rudimentary coccygeal vertebrae fused to form a triangular bone that articulates with the sacrum.
The lower end of the spinal column, resembling a bird’s beak and consisting of four fused nodules of bone; these represent vertebrae and correspond to the tail in lower animals. Above the coccyx lies a much larger bone, the sacrum, and together they form the back wall of the pelvis, which protects the organs in the lower abdomen.
A small bone at the base of the spinal column in humans, formed by four fused rudimentary vertebrae. It is usually ankylosed and articulated with the sacrum above.
The final segment of the vertebral column, comprising a fusion of three to five vertebrae, which articulates with the sacrum, an integral component of the pelvis.
The coccyx, often referred to as the tailbone, is a small triangular bone consisting of four fused tiny bones located at the base of the spine. It is positioned in conjunction with the sacrum, a larger bone situated just above it, together forming the posterior part of the pelvis. While the coccyx and sacrum have minimal mobility, it is common for them to fuse together later in life.
The bone located at the base of the spine, between the buttocks. It is the vestige of the tailbone.