TMJ Biomechanics Worksheet - BPT 2nd SemesterPart A: Multiple Choice Questions (MCQs)1. The articular disc of the TMJ is made up of: a) Hyaline cartilage b) Fibrocartilage c) Elastic cartilage d) Synovial membrane2. Which of the following muscles is a primary depressor of the mandible? a) Masseter b) Temporalis c) Digastric d) Medial pterygoid3. The TMJ allows which of the following types of movements? a) Gliding only b) Hinge only c) Both hinge and gliding d) Ball and socket type4. The main nerve supply to the TMJ is via: a) Facial nerve b) Trigeminal nerve c) Glossopharyngeal nerve d) Vagus nerve5. Which of the following structures divides the TMJ into two compartments? a) Articular capsule b) Articular disc c) Synovial membrane d) Lateral ligament6. Which muscle helps in lateral deviation of the mandible? a) Temporalis b) Lateral pterygoid c) Buccinator d) Masseter7. During wide mouth opening, which movement occurs in the upper compartment of TMJ? a) Rotation b) Translation c) Flexion d) Retraction8. The superior head of lateral pterygoid muscle is active during: a) Jaw closing b) Jaw opening c) Jaw protrusion d) ChewingPart B: Short Answer Questions (3–5