Pulmonary specialists work closely with other doctors and nurses as a part of a medical care team. Pulmonary circulation is the movement of blood from the heart, to the lungs, and back to the heart again. A pulmonary specialist treats patients who have problems with their lungs or respiratory systems. Becoming a pulmonary specialist requires a major commitment to education. A pulmonary specialist must have a comforting bedside manner.
Cell plate is the structure found inside the dividing cells of terrestrial plants and some algae. It develops in the middle plane of the cell separating two daughter cells during cell division. In animal cells, cytokinesis is carried out by the formation of cleavage furrow but in plant cells it is by the formation of cell plate. Compare: cleavage furrow. See also: cell division, mitosis, telophase.
A cell wall is a structural layer that surrounds most types of cells, situated outside the cell membrane. It can be tough, flexible, and sometimes rigid. It provides the cell with both structural support and protection, and also acts as a filtering mechanism. Cell walls are present in most prokaryotes, and in plants, fungi and other eukaryotes, where a major function is to act as pressure vessels, preventing over-expansion of the cell when water enters. Cell walls are absent from Mycoplasma bacteria, animal, and human cells.