Beginner Pyramidalis Quiz
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This quiz contains 10 questions. Click below to begin.
Q1. Where is the pyramidalis muscle located?
- Posterior to psoas major
- Anterior to the inferior part of rectus abdominis
- On the posterior thoracic wall
- Inside the inguinal canal
Q2. What is the general shape of pyramidalis?
- Quadrangular
- Triangular
- Fusiform and very long
- Circular
Q3. From which region does pyramidalis arise inferiorly?
- Xiphoid process
- Iliac tubercle only
- Pubic crest and pubic symphysis
- Twelfth rib
Q4. Into which structure does pyramidalis insert?
- Linea alba
- Thoracolumbar fascia
- Linea aspera
- Inguinal ligament
Q5. What is the principal action of pyramidalis?
- It depresses the scapula
- It abducts the thigh
- It tenses the linea alba
- It extends the trunk
Q6. Is pyramidalis present in every person?
- Yes, it is always bilateral
- Yes, but only in males
- Yes, but only in females
- No, it may be absent
Q7. Which larger muscle lies directly posterior to pyramidalis?
- Quadratus lumborum
- External oblique
- Psoas major
- Rectus abdominis
Q8. Within which sheath is pyramidalis located?
- Rectus sheath
- Femoral sheath
- Axillary sheath
- Carotid sheath
Q9. Where is pyramidalis found relative to the midline?
- Inside the pelvic cavity
- Posterior to the vertebral column
- Near the midline
- Only at the lateral abdominal wall
Q10. Which statement best describes the size of pyramidalis compared with rectus abdominis?
- It is much smaller and shorter
- It is larger and longer
- Pyramidalis spans the entire abdomen
- They are always equal in size