HP4a Passage Across Epithelium 1

Question:

    Examine micrographs b, c, d. Each shows a structural specialisation which supports the passage of substances across an epithelial lining

    Micrograph B Micrograph B feedback Micrograph C Micrograph C feedback Micrograph D

    For each micrograph, identify the structural feature which supports such passage (for the purposes of this exercise ignore the depth of the epithelium)