GENERAL HISTOLOGY

Detailed explanation-1: -Function of the cell membrane to block the movement of certain sizes, shapes and kinds of particles from entering the cell. Function of the cell membrane to allow substances to flow freely through, in and out of the cell.

Detailed explanation-2: -Definition. The cell membrane, also called the plasma membrane, is found in all cells and separates the interior of the cell from the outside environment. The cell membrane consists of a lipid bilayer that is semipermeable. The cell membrane regulates the transport of materials entering and exiting the cell.

Detailed explanation-3: -The cell’s shape and movement depend on the cytoskeleton. Two types of protein fibers make up the cytoskeleton. Microtubules are long, hollow protein cylinders that form a firm skeleton for the cell. They assist in moving substances within the cell.

Detailed explanation-4: -The cytoskeleton provides a structural framework for the cell, serving as a scaffold that determines cell shape and the general organization of the cytoplasm. In addition to playing this structural role, the cytoskeleton is responsible for cell movements.

Detailed explanation-5: -The cytoskeleton is an important, complex, and dynamic cell component. It acts to organize and maintain the cell’s shape; anchors organelles in place; helps during endocytosis (the uptake of external materials by a cell); and moves parts of the cell in processes of growth and motility.