The structure responsible for the restriction of movement of large complex substances into the bloodstream is the endothelial cells that line blood vessels. These cells form a barrier known as the blood-brain barrier, which regulates the entry of substances from the bloodstream into the brain and spinal cord to protect the central nervous system.
cytoskeleton
Mitochondria is the cellular structure that is responsible for circulation. Mitochondria are surrounded by a membrane and are present in most eukaryotic cells.
desmosomes
The nuclo
cytoskeleton
The structure responsible for the restriction of movement of large complex substances into the bloodstream is the endothelial cells that line blood vessels. These cells form a barrier known as the blood-brain barrier, which regulates the entry of substances from the bloodstream into the brain and spinal cord to protect the central nervous system.
On the outer surface of the cell, there are finger like projections called Cilia. Filaments in Cilia propel the cells movement by using ATP as energy source. Ciliated based movement is common and prokaryote.
cytoskeleton
The cytoskeleton is responsible for providing structural support and facilitating movement within cells. It is made up of protein filaments such as microtubules, actin filaments, and intermediate filaments that help maintain cell shape, enable intracellular transport, and allow for cell motility.
The Golgi bodies is the structure that is responsible for the transportation and delivery of materials in cells.
Golgi bodies
Flagella are the organelles in cells that are whiplike in structure. They are responsible for providing motility to certain cells, such as sperm cells in animals and algae cells in plants.
Striped muscular cells with sacromeres and motor neurons.
Mitochondria is the cellular structure that is responsible for circulation. Mitochondria are surrounded by a membrane and are present in most eukaryotic cells.
HEART
the spindle fibers i think