The answer is a physciatrist
Pharmacodynamics are different medicine/drugs used for different diagnosis/body repairment/supplements that our natural needs requires artificial supplements. I said artificial because it is not as exact as what our natural body produces and it has side effects.
Answer: A. Ascending and transverse colons
Explanation:
The ascending and transverse colons will be impaired due to injury because Blood from the superior mesenteric artery and parasympathic nerve fibres from the vagus nerve is collected by the ascending and transverse colon.
However, blood from the lower mesenteric artery and parasympathic nerve fibres from the pelvic splanchnic nerve originating from sacral spinal nerves (S2-S4) is provided by the descending and sigmoid colons.
Hence, the correct answer is A. "Ascending and transverse colons".