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Questions and Answers
Which spinal nerve pierces the transversus abdominis muscle?
Which nerve runs along the inferior border of the 12th rib?
Which region is innervated by the ilio-inguinal nerve?
Which muscle do the vessels of the anterolateral abdominal wall supply?
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Which muscles act with iliacus to flex the thigh?
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Which nerves innervate the iliopsoas muscle?
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Which muscle extends and laterally flexes the vertebral column?
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Which structures convey visceral afferent fibers that are not part of the autonomic nervous system?
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What is the insertion point of the internal oblique muscle?
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Which nerve innervates the transversus abdominis muscle?
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What action is primarily associated with the rectus abdominis muscle?
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Which muscle originates from the thoracolumbar fascia and the anterior two thirds of the iliac crest?
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Which lymph node group typically drains the glans penis and superficial inguinal nodes in the male pelvis?
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Where does the spongy urethra course through in the male anatomy?
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Which part of the male urethra is the narrowest and least distensible?
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Which lymph node group typically drains the ovaries and associated structures in the female pelvis?
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Which muscle compresses the bulb of the penis to expel the last drops of urine or semen?
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Which muscle surrounds the urethra superior to the perineal membrane?
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Which artery supplies most erectile tissue of the penis or clitoris via helicine arteries?
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Which muscle maintains the erection of the penis or clitoris by compressing outflow veins and pushing blood from the root of the penis or clitoris into the body?
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Which muscle constricts the anal canal during peristalsis and resists defecation?
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Which artery supplies the skin of the scrotum or labia majora and pierces the perineal membrane to reach the bulb of the penis or vestibule of the vagina?
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What shape is the pelvic inlet in females?
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Which artery is the main blood supply to the perineum, including muscles of the anal canal and perineum?
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What is the angle of the female pubic arch and subpubic angle?
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Which muscle laterally rotates and abducts the hip joint?
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Which artery supplies the superior rectus abdominis and superior part of the anterolateral abdominal wall?
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Which artery supplies the inferior rectus abdominis and medial part of the anterolateral abdominal wall?
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Which artery supplies the body of the pancreas, spleen, and greater curvature of the stomach?
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Which artery supplies the descending colon, sigmoid colon, and rectum?
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Study Notes
Principal Arteries of Anterolateral Abdominal Wall
- Musculophrenic artery originates from the internal thoracic artery and supplies the superior rectus abdominis and superior part of the anterolateral abdominal wall.
- The abdominal aorta provides arterial supply beyond the ribs to the abdominal wall between the internal oblique and transversus abdominis.
- The external iliac artery runs deep to the rectus abdominis and supplies the inferior rectus abdominis and medial part of the anterolateral abdominal wall.
- The arterial supply to the esophagus, stomach, duodenum, liver, gallbladder, pancreas, and spleen includes the celiac trunk, left gastric, splenic, and hepatic arteries.
- The celiac trunk bifurcates into the splenic and common hepatic arteries and supplies the esophagus, stomach, duodenum, liver, and pancreas.
- The left gastric artery ascends retroperitoneally to the esophageal hiatus and then descends along the lesser curvature to anastomose with the right gastric artery.
- The splenic artery supplies the body of the pancreas, spleen, and greater curvature of the stomach, with the posterior gastric branch providing supply to the posterior wall and fundus of the stomach.
- The hepatic artery runs along the lesser curvature of the stomach and supplies the liver, gallbladder, stomach, pancreas, and duodenum.
- The superior mesenteric artery supplies the stomach, pancreas, first part of the duodenum, and distal part of the bile duct.
- The arterial supply to the intestines includes the superior mesenteric artery, which supplies the jejunum, ileum, and ascending colon.
- The inferior mesenteric artery supplies the descending colon, sigmoid colon, and rectum.
- The autonomic innervation of abdominal viscera involves splanchnic nerves originating from different levels of the sympathetic trunk to serve the abdominopelvic cavity.
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Description
Test your knowledge of the principal arteries of the anterolateral abdominal wall with this quiz. Identify key arterial pathways and their supply to various abdominal organs, including the stomach, liver, pancreas, and intestines. Understand the role of autonomic innervation in the abdominopelvic cavity.
