the midrib
Midrib
The smaller veins in the leaf connect to the larger veins, which lead to the midrib, or central vein. This network of veins helps transport water, nutrients, and sugars to and from the leaf's cells for photosynthesis and other metabolic processes.
pinately netted
Venation is how a the leaf veins are organized. Netted venation is when there are larger veins with many smaller veins branches making a type of web pattern.
Capillaries are smaller, thinner and have less surface area than veins. Veins take blood to the heart, and capillaries are the thin tubes that connect the veins and arteries together.
An example of a venation leaf is a maple leaf, which displays a pinnate venation pattern with a single midrib running down the center of the leaf and smaller veins branching off it.
In parallel venation, the veins are all smaller in size and parallel or nearly parallel to one another, although a series of smaller veins connects the large veins. Parallel venation occurs in the leaves of nearly all monocotyledonous Angiosperms, whose embryos have one cotyledon, as in flowering plants such as lillies and grasses
The patten of veins on a dicot leaf are called netted veins. With netted veins, several main veins begin near the base of the leaf and radiate outward.
leaf vessels
The Veins in the leaf
The network of veins is the leaf skeleton
The three major patterns of leaf veins are parallel, pinnate, and palmate. In parallel venation, the veins run parallel to each other from the base to the tip of the leaf. In pinnate venation, one main vein extends from the base to the tip, with smaller veins branching off it. In palmate venation, multiple main veins radiate outwards from a central point at the base of the leaf.