Spines are leaves that have been modified into cylindrical, hard structures with sharp ends. They are occasionally called thorn , which is incorrect .... , needle-like structures in plants
A spine is a hard, thorny or needle-like structure which occurs on various animals. Animals such as porcupines and sea urchins grow spines as a self-defense mechanism.... , needle-like structures in animals
In human anatomy, the vertebral column is a column of 24 vertebrae, the sacrum, intervertebral discs, and the coccyx situated in the dorsum aspect of the torso, separated by spinal discs.... , spine in anatomy, the backbone
