Intermediate Latissimus Dorsi Quiz

Q1. Which lower vertebral region contributes to the broad origin of latissimus dorsi through the thoracolumbar fascia?

• Lower thoracic and lumbar vertebral region
• Upper cervical vertebrae only
• Coccyx only
• Sacral canal only

Q2. Which pelvic landmark contributes to the origin of latissimus dorsi?

• Pubic tubercle
• Iliac crest
• Ischial spine
• Anterior inferior iliac spine only

Q3. Which ribs commonly provide slips of origin for latissimus dorsi?

• Second and third ribs only
• Lower three or four ribs
• First rib only
• All costal cartilages exclusively

Q4. How do the fibers of latissimus dorsi generally travel toward the axilla?

• Inferomedially toward the sacrum
• Vertically into the skull
• Superolaterally toward the axilla
• Directly anterior into the sternum

Q5. What is the relationship of the latissimus dorsi tendon to teres major near the humerus?

• Latissimus inserts on the medial epicondyle
• Teres major inserts into the floor while latissimus inserts on the lateral epicondyle
• Both insert on the greater tubercle
• Latissimus dorsi inserts into the floor while teres major inserts on the medial lip

Q6. From which part of the brachial plexus does the thoracodorsal nerve arise?

• Medial cord only
• Posterior cord
• Lateral cord
• Upper trunk directly

Q7. Which spinal nerve roots are commonly associated with the thoracodorsal nerve?

• C1 and C2
• T10 to T12
• C6, C7, and C8
• L4 to S1

Q8. How can latissimus dorsi assist respiration when the upper limb is fixed?

• It closes the larynx
• It contracts the diaphragm directly
• It can act on the thoracic wall through its rib attachments
• It opens the auditory tube

Q9. What scapular relationship may vary among individuals at the superior border of latissimus dorsi?

• A tendon through the glenoid cavity
• A constant insertion on the acromion
• A slip from the inferior angle of the scapula
• A ligament to the coracoid process in every person

Q10. Why is latissimus dorsi effective during rowing or pulling?

• It acts only on the elbow
• It primarily flexes and abducts the humerus
• It combines humeral extension, adduction, and medial rotation
• It produces scapular elevation without humeral movement