Explanation:

- Cytology: The study of cells, their function, structure, and significance, generally unrelated to leaf veins.

- Anthology: A collection of literary works, such as poems or stories, not related to leaves or botanical terms.

- Morphology: The study of the form and structure of organisms, including plants, but not specifically focused on the veins of leaves.

- Venation: The correct term for the pattern of veins in the blade of a leaf, describing how veins are arranged.