This fact is from TMJ Anatomy in Oral Anatomy & Histology. It is a commonly tested concept in NEET MDS examinations. Understanding this fact is crucial for answering MCQs correctly.
Disc = fibrocartilage avascular aneural in center
Upper joint space = translation gliding movement
Lower joint space = rotation hinge movement
Lateral pterygoid = opens mouth protrusion depression
Superior head = active in closing
Articular eminence = slope guides condylar movement.