Its cytoplasm.
cytoplasm
The uterus keeps the trachea from collapsing in a fetal pig.
The cell wall in plant cells and the cytoskeleton in animal cells provide structural support to prevent the cell membrane from collapsing. The cell wall is made of cellulose in plants and provides rigidity, while the cytoskeleton is a network of protein filaments that helps maintain cell shape and structural integrity.
Plasmolysis is the reason because it always has water to keep it full.
hydrostatic
Dynamic equilibrium.
The trachea has a series of cartilage rings that prevent it from collapsing.
gravity maybe?
Like a camera has a case, the eye is surrounded by tissues and are filled with fluid called "humours" to keep it from collapsing.
The web of proteins in the cytoplasm that supports the cell membrane is called the cytoskeleton. It is made up of protein filaments such as actin, microtubules, and intermediate filaments, which provide structure and shape to the cell as well as support to the membrane.
The cell wall provides structure, support, and protection to the cell. It helps maintain the shape of the cell and prevents it from bursting or collapsing. The cell wall also acts as a barrier to protect the cell from external threats and allows communication between neighboring cells.
cell wall keeps cells shapecell membrance keeps cell wall strong