Trace a meal from mouth to elimination and match each digestive organ to what it actually does, the way the HESI A2 anatomy and physiology subtest tests it.
ObjectiveA.4.3Read5 minExam weightCirculation, Respiration and Maintenance ≈ 28% of Anatomy & Physiology
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Sequence the organs of the digestive tract in the order food actually travels through them.
Match each accessory organ, gallbladder, liver, and pancreas, to the secretion it contributes and what that secretion does.
Explain how the small intestine's structure is built for absorption, and what the large intestine does differently.
What the lesson concludes
The digestive tract is one continuous tube from mouth to anus, and every organ along it has a distinct job in breaking food down or absorbing it.
Chemical digestion starts in the mouth with amylase and finishes in the small intestine, not in the stomach.
The liver, gallbladder, and pancreas are accessory organs. They empty their secretions into the small intestine rather than food ever passing through them.
Villi and microvilli in the small intestine multiply surface area so that nutrients can be absorbed efficiently, not just broken down.
The large intestine's main job is reabsorbing water and housing normal flora, not digesting nutrients.