Anatomy: Rectal Veins and Lymph Drainage
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Questions and Answers

Where does the colon receive digested food from?

  • The stomach
  • The small intestine (correct)
  • The gallbladder
  • The liver
  • Which part of the colon is suspended in mesenteries?

  • Transverse colon (correct)
  • Descending colon
  • Sigmoid colon
  • Ascending colon
  • Where is the right colic flexure located?

  • Right lower quadrant (correct)
  • Left upper quadrant
  • Right upper quadrant
  • Left lower quadrant
  • What is the anatomical nature of the ascending colon?

    <p>Retroperitoneal structure</p> Signup and view all the answers

    What structures lie posteriorly to the ascending colon?

    <p>Iliacus and iliac crest</p> Signup and view all the answers

    How long is the ascending colon?

    <p>13 cm</p> Signup and view all the answers

    Which artery supplies the distal third of the transverse colon?

    <p>Left colic artery</p> Signup and view all the answers

    Which nerve supply the proximal two thirds of the descending colon?

    <p>Sympathetic and vagal nerves through the superior mesenteric plexus</p> Signup and view all the answers

    Where do the veins of the sigmoid colon drain into?

    <p>Inferior mesenteric vein</p> Signup and view all the answers

    What forms a sling at the junction of the rectum with the anal canal?

    <p>Puborectalis portion of the levator ani muscles</p> Signup and view all the answers

    Which part of the rectum is related to the posterior surface of the bladder, vas deferens, and seminal vesicles in males?

    <p>Lower third</p> Signup and view all the answers

    What artery supplies the chief blood to the mucous membrane of the rectum?

    <p>Superior rectal artery</p> Signup and view all the answers

    Which vessel is responsible for the venous drainage of all structures below the diaphragm?

    <p>Inferior vena cava</p> Signup and view all the answers

    Which artery supplies the large intestine from the splenic flexure to the upper part of the rectum?

    <p>Inferior mesenteric artery</p> Signup and view all the answers

    What is the function of the nerve supply to the rectum?

    <p>Sensory perception of stretch</p> Signup and view all the answers

    Which vessel drains into the internal iliac vein?

    <p>Middle suprarenal vein</p> Signup and view all the answers

    What is the function of the lumbosacral plexus?

    <p>Supplying nerve fibers to the lower limb</p> Signup and view all the answers

    Which vessel arises just below the celiac artery and supplies the distal duodenum, jejuno-ileum, and part of the transverse colon?

    <p>Superior mesenteric artery</p> Signup and view all the answers

    Which structures can be palpated by the finger during a digital rectal examination in both males and females?

    <p>Anorectal ring and ischial spines</p> Signup and view all the answers

    What is the space between the anal canal and side wall of the pelvis called?

    <p>Ischiorectal fossa</p> Signup and view all the answers

    Which structures lie in close proximity to the anal canal?

    <p>Coccyx and sacrum</p> Signup and view all the answers

    What divides the anal canal into two parts with different arterial supply, venous drainage, innervation, and lymphatic drainage?

    <p>Pectinate line</p> Signup and view all the answers

    During a digital rectal examination, which of the following abnormalities can be detected inside the rectal wall?

    <p>Prostatic abnormalities</p> Signup and view all the answers

    What can be detected outside the rectal wall during a digital rectal examination?

    <p>Foreign bodies in the vagina</p> Signup and view all the answers

    Where does the internal iliac artery originate?

    <p>Common iliac artery</p> Signup and view all the answers

    Which artery supplies the lower aspect of the bladder and, in males, the prostate gland and seminal vesicles?

    <p>Inferior vesical artery</p> Signup and view all the answers

    What is the terminal branch of the anterior trunk of the internal iliac artery?

    <p>Inferior gluteal artery</p> Signup and view all the answers

    Which structure surrounds the upper 2/3 of the anal canal and is formed from a thickening of the involuntary circular smooth muscle in the bowel wall?

    <p>Internal anal sphincter</p> Signup and view all the answers

    What is the superior aspect of the anal canal lined with?

    <p>Columnar epithelium</p> Signup and view all the answers

    What divides the anal canal into upper and lower parts, differing in structure and neurovascular supply?

    <p>Pectinate line</p> Signup and view all the answers

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