Intermediate Multifidus Quiz

Q1. From which sacral structure does lumbar multifidus have an important inferior attachment?

• Ischial tuberosity only
• Posterior sacrum
• Anterior superior iliac spine only
• Pubic symphysis

Q2. Which lumbar vertebral processes provide important attachments for multifidus fascicles?

• Coronoid processes
• Costal cartilages
• Mammillary processes
• Uncinate processes only

Q3. From which thoracic vertebral structures does multifidus commonly arise?

• Sternal facets
• Transverse processes
• Vertebral bodies only
• Costal grooves

Q4. From which cervical structures does multifidus commonly arise?

• First ribs only
• Clavicles
• Articular processes
• Mandibular rami

Q5. Where do multifidus fascicles generally insert superiorly?

• Intervertebral discs only
• Vertebral bodies below their origin
• Spinous processes of superior vertebrae
• Rib angles exclusively

Q6. What is an important functional role of lumbar multifidus during movement?

• Forced expiration by depressing ribs
• Elevation of the scapula
• Segmental stabilization of the lumbar spine
• Primary flexion of the hip

Q7. Why is multifidus considered well positioned to control individual vertebral segments?

• It has no vertebral attachments
• It has one long tendon extending from pelvis to skull
• Its short overlapping fascicles span limited vertebral levels
• It acts only on the shoulder girdle

Q8. Which fascial structure overlies and helps enclose multifidus in the lumbar region?

• Cribriform fascia
• Palmar aponeurosis
• Thoracolumbar fascia
• Transversalis fascia only

Q9. How does multifidus compare with erector spinae in general architecture?

• Both have identical architecture
• Multifidus lacks skeletal muscle fascicles
• Multifidus has shorter oblique segmental fascicles
• Multifidus forms longer longitudinal columns than erector spinae

Q10. What sensory role is associated with deep intrinsic back muscles such as multifidus?

• Vision
• Hearing
• Proprioception
• Taste