Intermediate Sigmoid Colon Quiz
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This quiz contains 10 questions. Click below to begin.
Q1. Which arteries directly supply the sigmoid colon?
- Jejunal arteries
- Short gastric arteries
- Sigmoid arteries
- Inferior phrenic arteries
Q2. Which artery continues inferiorly from the inferior mesenteric artery beyond the sigmoid branches?
- Gastroduodenal artery
- Superior rectal artery
- Right colic artery
- Appendicular artery
Q3. Which arterial channel provides collateral continuity along the mesenteric border of the sigmoid colon?
- Portal vein
- Median sacral artery
- Marginal artery
- Inferior vena cava
Q4. Into which vein does venous blood from the sigmoid colon primarily drain?
- External iliac vein
- Azygos vein
- Inferior mesenteric vein
- Internal thoracic vein
Q5. Which lymph nodes are the principal central nodal group for lymph from the sigmoid colon?
- Superficial inguinal nodes
- Inferior mesenteric nodes
- Celiac nodes
- Axillary nodes
Q6. Which autonomic plexus is closely associated with sympathetic distribution to the sigmoid colon?
- Cardiac plexus
- Cervical plexus
- Inferior mesenteric plexus
- Brachial plexus
Q7. Which sympathetic nerves contribute to autonomic pathways supplying the sigmoid colon?
- Phrenic nerves
- Lumbar splanchnic nerves
- Pudendal nerves
- Pelvic splanchnic nerves
Q8. At approximately which vertebral level does the sigmoid colon become the rectum?
- S3
- C1
- T12
- L1
Q9. What happens to the taeniae coli at the rectosigmoid junction?
- They become skeletal muscle
- They form the internal anal sphincter
- They terminate without contributing to the rectal wall
- They spread into a continuous longitudinal layer
Q10. Why is the sigmoid colon generally more mobile than the descending colon?
- It is suspended by the sigmoid mesocolon
- It lies inside the urinary bladder
- It has no peritoneal covering
- It is fixed directly to the posterior wall throughout