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Lateral cross section of the penis. Three main parts of the human penis include: Root: It is the attached part, consisting of the bulb in the middle and the crura, one crus on either side of the bulb. It lies within the superficial perineal pouch. The crus is attached to the pubic arch.
Lateral Root emerging from the pericycle (blue) in a cross-section of Iris germanico root. Lateral roots, emerging from the pericycle (meristematic tissue), extend horizontally from the primary root (radicle) and over time makeup the iconic branching pattern of root systems. [1]
The cross-section of a barley root. Root morphology is divided into four zones: the root cap, the apical meristem, the elongation zone, and the hair. [ 4 ] The root cap of new roots helps the root penetrate the soil. These root caps are sloughed off as the root goes deeper creating a slimy surface that provides lubrication.
The cross-section of a Hedstrom file (H-file) is made up of a continuous sequence of cones. They are very sharp with a cutting tip. Their use in a push-pull fashion results in a high level of debridement on removal from the root canal. They should not be rotated more than 30 degrees as they are narrow and vulnerable to fracture.
Plant stem. This above-ground stem of Polygonum has lost its leaves, but is producing adventitious roots from the nodes. A stem is one of two main structural axes of a vascular plant, the other being the root. It supports leaves, flowers and fruits, transports water and dissolved substances between the roots and the shoots in the xylem and ...
Root canals presenting an oval cross-section are found in 50–70% of root canals. In addition, canals with a "tear-shaped" cross section are common when a single root contains two canals (as occurs, for example, with the additional mesial root seen with the lower molars), subtleties that can be more difficult to appreciate on classical ...
In human male anatomy, the radix (/ r eɪ. d ɪ k s /) [1] or root of the penis is the internal and most proximal portion of the human penis that lies in the perineum. Unlike the pendulous body of the penis, which is suspended from the pubic symphysis , the root is attached to the pubic arch of the pelvis and is not visible externally.
Cross section through a soybean root nodule. The bacterium, Bradyrhizobium japonicum, colonizes the roots and establishes a nitrogen fixing symbiosis. This high magnification image shows part of a cell with single bacteroids within their symbiosomes. In this image, endoplasmic reticulum, dictysome and cell wall can be seen.