Beginner Muscles of the Abdominal Wall Quiz
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This quiz contains 10 questions. Click below to begin.
Q1. Which three flat muscles form the lateral part of the anterolateral abdominal wall?
- External oblique, internal oblique, and transversus abdominis
- Pyramidalis, quadratus lumborum, and diaphragm
- Latissimus dorsi, serratus anterior, and pectoralis major
- Rectus abdominis, psoas major, and iliacus
Q2. Which paired vertical muscle lies within the rectus sheath?
- External oblique
- Transversus abdominis
- Quadratus lumborum
- Rectus abdominis
Q3. Which abdominal wall muscle is the most superficial of the three flat muscles?
- Rectus abdominis
- Internal oblique
- External oblique
- Transversus abdominis
Q4. Which muscle lies between external oblique and transversus abdominis?
- Diaphragm
- Rectus abdominis
- Pyramidalis
- Internal oblique
Q5. Which flat abdominal muscle has predominantly horizontal fibers?
- Pyramidalis
- Transversus abdominis
- External oblique
- Rectus abdominis
Q6. What is a major action shared by the flat abdominal muscles?
- Plantarflexion of the ankle
- Extension of the elbow
- Elevation of the mandible
- Compression and support of abdominal viscera
Q7. What is a major bilateral action of rectus abdominis?
- Extension of the forearm
- Flexion of the trunk
- Abduction of the shoulder
- Dorsiflexion of the foot
Q8. Which fibrous midline structure receives contributions from abdominal muscle aponeuroses?
- Linea aspera
- Nuchal ligament
- Iliotibial tract
- Linea alba
Q9. Which small muscle may be present anterior to the inferior part of rectus abdominis?
- Pyramidalis
- Multifidus
- Cremaster
- Psoas minor
Q10. What is the principal action of pyramidalis?
- Depression of the ribs
- Extension of the vertebral column
- Abduction of the thigh
- Tension of the linea alba