Which of the following are major organs of the alimentary canal/GI tract? (Select all that apply)

A. From the lower esophageal sphincter to the duodenum: That describes sections of the lower GI (distal esophagus → stomach → duodenum), not the pharynx.
B. From the mucous membranes of the mouth to the tongue: This describes parts of the oral cavity; the pharynx is posterior to the oral cavity and includes nasopharynx, oropharynx, and laryngopharynx.
C. From the oral and nasal cavities to the esophagus and larynx openings: The pharynx connects the nasal and oral cavities above to the openings of the esophagus and larynx below (nasopharynx, oropharynx, laryngopharynx).
D. From the oral and nasal cavities through the diaphragm to the abdomen: That would include the esophagus and thoracoabdominal passage through the diaphragm; the pharynx does not extend through the diaphragm.

A. Ileoappendix: Not a standard anatomical valve -the term suggests a junction with the appendix but is not the valve between small and large intestine.
B. Pyloric sphincter: The pyloric sphincter is between the stomach and duodenum, not at the ileum–cecum junction.
C. Duodenorenal:Not a recognized valve -describes a relation between duodenum and kidney region, not a valve.
D. Ileocecal:The ileocecal (ileocecal/ileocecal) valve is the sphincter at the junction of the terminal ileum and cecum that controls flow of chyme into the large intestine.