Gastrointestinal: Adjective referring collectively to the stomach and small and large intestines. The commonly used abbreviation for gastrointestinal is GI. (Outside of medicine, GI can also stand for galvanized iron, general issue or government issue-as in GI Joe).
Before the extracellular matrix is calcified, the tissue is called osteoid (bone-like) tissue. When the concentrations of calcium and phosphate ions rise high enough, they are deposited into the extracellular matrix, and the bone calcifies.
References. View image. A sesamoid bone is a bone that is inside a tendon where the tendon passes over a joint. Tendons are strong bands of tissue that attach muscle to bone. The ball of your foot contains two small sesamoid bones. These bones act as pulleys for the tendons and help flex or curl your big toe.eferences. View image. A sesamoid bone is a bone that is inside a tendon where the tendon passes over a joint. Tendons are strong bands of tissue that attach muscle to bone. The ball of your foot contains two small sesamoid bones. These bones act as pulleys for the tendons and help flex or curl your big toe.