Illustrate the relationship between cell morphology and function with examples. The relevant content is as follows:

1. Introduction

Cell morphology is the microscopic study of cells and their components. Structure and submicroscopic structure, including the science of the structure of biological macromolecules that express cellular life phenomena.

All living things are composed of cells, but the size and shape of cells in different organisms are different. Some cells can be seen with the human eye, such as bird eggs, with the largest diameter being nearly 10 centimeters (ostrich eggs).

Some cells are only 0.1 meters in diameter and require a high-power microscope to see them, such as primitive bacteria. Most cells are 10-100 microns in diameter and can be seen with a low-power microscope. The size of cells, even within the same tissue of the same organism, varies. The size of the same cell will also change at different stages of development.

2. Shape

Cells have various shapes, including spheres, polyhedrons, spindles and columns. Due to the cell's internal structure and surface tension, as well as external mechanical pressure, various cells always maintain their own certain shape.

There is a close relationship between cell shape and function. For example, nerve cells will stretch several meters because elongated nerve cells are conducive to transmitting external stimulation information. The reason why tall trees can be lush and green is because the vessels and sieve tube cells in the plants are tubular, which is conducive to the transportation of water and nutrients.

3. Test content

Cell morphology test content is multi-faceted. For blood routine, it mainly refers to the morphological classification of peripheral blood cell smears. While the analyzer gives the number of cells and other parameters, the blood films are manually pushed out and manually classified under the microscope after routine staining.

Modern blood analyzers can classify cells through flow cytometry, chemical staining and other technologies, and can even identify abnormal cells, but manual classification and review are still required. There are also instruments that automatically collect and analyze images and classify cells under manual review, which can significantly improve work efficiency.