Glandular and Muscular Stomach of Poultry

Correct Answer: Both A and C (Proventriculus & Gizzard / Proventriculus & Ventriculus)

This question has two correct answers because Gizzard and Ventriculus are the same organ:

• Glandular stomach = Proventriculus — secretes HCl and pepsinogen for chemical digestion.
• Muscular stomach = Gizzard = Ventriculus — a thick-walled, muscular organ that physically grinds food. Its inner lining is hardened by koilin secretion.

So option A (Proventriculus & Gizzard) and option C (Ventriculus & Proventriculus) — when reversed — both correctly describe the glandular and muscular stomachs respectively. Hence "Both A & C" is correct.