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