Podcast
Questions and Answers
What is the origin of the Rectus Abdominis muscle?
What is the origin of the Rectus Abdominis muscle?
- Outer surface of ribs 5-12
- Pubic symphysis and crest (correct)
- Anterior iliac crest, thoracolumbar fascia and lateral third of inguinal ligament
- Xiphoid process and costal cartilage of ribs 5-7
Which muscle flexes the trunk, compresses internal viscera, and is supplied by the Thoraco-abdominal and subcostal nerves T7-T12?
Which muscle flexes the trunk, compresses internal viscera, and is supplied by the Thoraco-abdominal and subcostal nerves T7-T12?
- Rectus Abdominis (correct)
- External Oblique
- Transversus Abdominis
- Internal Oblique
What is the insertion point of the External Oblique muscle?
What is the insertion point of the External Oblique muscle?
- Xiphoid process and costal cartilage of ribs 5-7
- Pubic symphysis and crest
- Anterior iliac crest, thoracolumbar fascia, and lateral third of inguinal ligament
- Linea Alba (Rectus Sheet), pubic tubercle, and iliac crest (correct)
Which structure describes the components and functions of the Peritoneum?
Which structure describes the components and functions of the Peritoneum?
What is the nerve supply for the Internal Oblique muscle?
What is the nerve supply for the Internal Oblique muscle?
Where does the Rectus Abdominis muscle insert?
Where does the Rectus Abdominis muscle insert?
Which muscle flexes and rotates the trunk, and compresses and supports internal viscera?
Which muscle flexes and rotates the trunk, and compresses and supports internal viscera?
Which nerve supplies the skin, muscles, and parietal peritoneum of the anterolateral abdominal wall?
Which nerve supplies the skin, muscles, and parietal peritoneum of the anterolateral abdominal wall?
What is the origin of the quadratus lumborum muscle?
What is the origin of the quadratus lumborum muscle?
Which artery supplies the superior part of the abdominal wall?
Which artery supplies the superior part of the abdominal wall?
Which peritoneal fold attaches to the greater curvature of the stomach and the first part of the duodenum?
Which peritoneal fold attaches to the greater curvature of the stomach and the first part of the duodenum?
Which nerve supplies the anterior surface of the scrotum or labia majora?
Which nerve supplies the anterior surface of the scrotum or labia majora?
What is the action of the psoas muscle?
What is the action of the psoas muscle?
What structure covers much of the viscera in the abdominal cavity?
What structure covers much of the viscera in the abdominal cavity?
What is a potential space between the parietal and visceral layers of peritoneum called?
What is a potential space between the parietal and visceral layers of peritoneum called?
What is the origin of the iliacus muscle?
What is the origin of the iliacus muscle?
What is the nerve supply for the rectus abdominis muscle?
What is the nerve supply for the rectus abdominis muscle?
Study Notes
Rectus Abdominis
- Originates from the pubic symphysis and pubic crest.
- Inserts at the xiphoid process and costal cartilages of ribs 5-7.
- Flexes the trunk, compresses internal viscera, supplied by Thoraco-abdominal and subcostal nerves (T7-T12).
External Oblique Muscle
- Inserts into the linea alba, pubic tubercle, and anterior half of the iliac crest.
Peritoneum
- A membranous structure that lines the abdominal cavity, consisting of parietal and visceral layers with various components and functions.
Internal Oblique Muscle
- Supplied by the Thoraco-abdominal nerves (T7-T11) and the subcostal nerve (T12), innervating its function.
Quadratus Lumborum Muscle
- Originates from the iliolumbar ligament and adjacent iliac crest, contributing to trunk stability and lateral flexion.
Abdominal Wall Blood Supply
- Superior part of the abdominal wall is primarily supplied by the superior epigastric artery.
Peritoneal Folds
- The greater omentum attaches to the greater curvature of the stomach and the first part of the duodenum.
Sensory Nerve Supply
- The ilioinguinal nerve supplies the skin, muscles, and parietal peritoneum of the anterolateral abdominal wall.
Psoas Muscle
- Actions include flexion of the trunk, as well as hip flexion and stabilization of the lumbar spine.
Abdominal Cavity Structures
- The peritoneal cavity contains a potential space between the parietal and visceral layers of peritoneum.
Iliacus Muscle Origin
- Originates from the iliac fossa and iliac crest, contributing to hip flexion alongside the psoas muscle.
Rectus Abdominis Nerve Supply
- The rectus abdominis muscle receives its nerve supply from the Thoraco-abdominal nerves (T7-T11) and subcostal nerve (T12).
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Description
Test your knowledge of the surface anatomy, layers, skeletal and muscular elements, and peritoneum of the abdominal wall in this quiz for Spring 2024. Learn to describe the surface anatomy, layers, and functions of the abdominal wall and peritoneum.
