Intermediate Transversus Thoracis Quiz
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This quiz contains 10 questions. Click below to begin.
Q1. From which surface of the sternum does transversus thoracis arise?
- Superior border only
- Lateral border only
- Posterior surface
- Anterior surface
Q2. Which part of the sternum contributes to the origin of transversus thoracis?
- Jugular notch only
- Sternal angle only
- Xiphoid process
- Clavicular notch only
Q3. In which direction do the slips of transversus thoracis generally pass from their origin?
- Inferomedially
- Directly inferiorly
- Superolaterally
- Directly posteriorly
Q4. Transversus thoracis typically attaches to which costal cartilages?
- Second through sixth costal cartilages
- Eleventh and twelfth ribs only
- Seventh through twelfth costal cartilages
- First costal cartilage only
Q5. Which vessels are closely related to the deep surface of the anterior thoracic wall and transversus thoracis?
- Internal thoracic vessels
- Femoral vessels
- Renal vessels
- Popliteal vessels
Q6. Which artery is an important source of blood supply to transversus thoracis?
- Renal artery
- Middle cerebral artery
- Femoral artery
- Internal thoracic artery
Q7. Which muscle is considered the anterior component of the deepest thoracic wall muscle plane?
- Pectoralis major
- Serratus anterior
- External intercostal
- Transversus thoracis
Q8. Which muscles form the lateral component of the deepest intrinsic thoracic wall muscle plane?
- Pectoralis minor
- Serratus posterior superior
- External intercostals
- Innermost intercostals
Q9. Which muscles form the posterior component of the deepest intrinsic thoracic wall muscle plane?
- External intercostals
- Subcostal muscles
- Pectoralis major
- Serratus anterior
Q10. Why can transversus thoracis contribute to expiration?
- It weakly depresses the costal cartilages and ribs
- It pulls the diaphragm downward
- It contracts the lungs directly
- It elevates the upper ribs strongly