Option H3.

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Option H3

H3.1 Draw and label a diagram showing a transverse section of the ileum as seen under a light microscope.

H3.1 Draw and label a diagram showing a transverse section of the ileum as seen under a light microscope.

Epithelial cells are adapted to maximize absorption of digested food H3.2 Explain the structural features of an epithelial cell of a villus as seen in electron micrographs, including microvilli, mitochondria, pinocytotic vesicles and tight junctions. Epithelial cells are adapted to maximize absorption of digested food molecules in the ileum. Tight junctions provide added control of the movement of molecules.

H3.3 Explain the mechanisms used by the ileum to absorb and transport food, including facilitated diffusion, active transport, and endocytosis.

H3.3 Explain the mechanisms used by the ileum to absorb and transport food, including facilitated diffusion, active transport, and endocytosis.

H3.3 Explain the mechanisms used by the ileum to absorb and transport food, including facilitated diffusion, active transport, and endocytosis.

H3.3 Explain the mechanisms used by the ileum to absorb and transport food, including facilitated diffusion, active transport, and endocytosis.

H3.3 Explain the mechanisms used by the ileum to absorb and transport food, including facilitated diffusion, active transport, and endocytosis.

H3.4 List the materials that are not absorbed and are egested.