A tube formed by the inward extension of the cell membrane is called a pseudopod. This structure is used by cells for processes such as engulfing particles or migrating.
transverse (T) tubule
ENDOCYTOSIS
ENDOCYTOSIS
ENDOCYTOSIS
ENDOCYTOSIS
ENDOCYTOSIS
ENDOCYTOSIS
ENDOCYTOSIS
This process is called endocytosis.
Endocytosis is the cellular process that involves the inward sinking of a small patch of membrane to form a cytoplasmic vesicle. This process allows cells to take in substances from the external environment.
Endocytosis is the process where a molecule causes the cell membrane to bulge inward, forming a vesicle to bring the molecule inside the cell. This is distinct from exocytosis, which is the process of releasing molecules from a cell by fusing vesicles with the cell membrane and expelling their contents.