What Forms the Definitive Anorectal Canal

question 10

Multiple Choice

What forms the definitive anorectal canal?

• A) It is completely derived from the distal hindgut.
• B) Two thirds of the anorectal canal is derived from the hindgut, and one third is from the anal pit.
• C) It is completely derived from the anal pit.
• D) It is entirely derived from the cloacal membrane.
• E) It is entirely derived from the urogenital sinus.

---

Definitions:

Termination Reaction

A chemical reaction that halts the growth of a polymer chain by removing reactive intermediates, ending the polymerization process.

Photochemically Initiated

Describes a process or reaction that begins when light energy is absorbed by a chemical substance.

Methane

A colorless, odorless, flammable gas that is the simplest alkane, consisting of one carbon atom bonded to four hydrogen atoms.

Chlorine

A chemical element with the symbol Cl and atomic number 17, known for its extensive use in disinfection and its role as a bleaching agent.