THE EXAMS POINTDigestion, absorption and assimilation
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Digestion, absorption and assimilation
01 · Ingestion
Food enters the body.
02 · Digestion
Large food molecules are broken down into absorbable products.
03 · Absorption
Products cross the gut lining into blood or lymph.
04 · Assimilation
Cells use absorbed substances for energy, growth or storage.
05 · Egestion
Undigested material leaves the digestive tract.
Connect the branches
This is a sequence of nutrition processes, not a diagram of all organs.
Avoid the exam trap
Egestion removes undigested food; excretion removes metabolic wastes.
Test yourself: Is movement of glucose through the gut lining assimilation?
It is absorption. Its subsequent use by cells is assimilation.
A concise revision aid with simplified connections. It supports the full chapter and primary references; it does not replace them.