Podcast
Questions and Answers
Which of the following muscles is NOT innervated by the anterior rami of spinal nerves T7 to L1?
Which of the following muscles is NOT innervated by the anterior rami of spinal nerves T7 to L1?
- External Oblique
- Internal Oblique
- Rectus Abdominis
- Pyramidalis (correct)
The linea semilunaris is a landmark found on which muscle?
The linea semilunaris is a landmark found on which muscle?
- External Oblique
- Internal Oblique
- Rectus Abdominis (correct)
- Transversus Abdominis
Which of the following describes the orientation of the muscle fibers in the transversus abdominis?
Which of the following describes the orientation of the muscle fibers in the transversus abdominis?
- Horizontally (correct)
- Superomedially
- Inferomedially
- Vertically
What is the primary function of the rectus abdominis muscle?
What is the primary function of the rectus abdominis muscle?
The inguinal ligament is formed by the inferior margin of the aponeurosis of which muscle?
The inguinal ligament is formed by the inferior margin of the aponeurosis of which muscle?
Which of the following muscles is NOT part of the rectus sheath?
Which of the following muscles is NOT part of the rectus sheath?
In the upper three-quarters, what is the arrangement of the rectus sheath relative to the rectus abdominis muscle?
In the upper three-quarters, what is the arrangement of the rectus sheath relative to the rectus abdominis muscle?
Unilateral contraction of which muscle would cause lateral flexion of the trunk to the opposite side?
Unilateral contraction of which muscle would cause lateral flexion of the trunk to the opposite side?
Which of the following features is responsible for the visible 'six-pack' appearance in individuals with low body fat?
Which of the following features is responsible for the visible 'six-pack' appearance in individuals with low body fat?
Besides trunk flexion, what other action can the abdominal muscles assist with?
Besides trunk flexion, what other action can the abdominal muscles assist with?
Flashcards
Abdominal Muscles Function
Abdominal Muscles Function
Protect the viscera and assist in bodily functions like breathing and childbirth.
Rectus Abdominis
Rectus Abdominis
Flexes vertebral column; paired muscle separated by the Linea Alba.
Linea Semilunaris
Linea Semilunaris
A white line on the edge of the rectus abdominis muscle.
Pyramidalis Muscle
Pyramidalis Muscle
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Rectus Sheath
Rectus Sheath
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Linea Alba
Linea Alba
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External Oblique
External Oblique
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Internal Oblique
Internal Oblique
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Aponeurosis
Aponeurosis
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Transversus Abdominis
Transversus Abdominis
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Study Notes
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Description
Overview of abdominal muscles including rectus abdominis and pyramidalis. Covers origins, insertions, functions, and innervation. Also describes the rectus sheath and related anatomical structures.
