Photo by: Russi & Morelli. The cytoskeleton is responsible for cell shape, motility (movement) of the cell as a whole, and motility of organelles within a cell. There are three types of filaments in the cytoplasm of most vertebrate cells: microfilaments, microtubules, and intermediate filaments. All of these filament systems share a critical feature: They are composed of proteins that have the unique property of being able to self-assemble into a filamentous network.
A biological unit of the body or of an organism. Examples of systems in human body: â¢ Circulatory system â¢ Digestive system â¢ Endocrine system â¢ Integumentary system â¢ Lymphatic system â¢ Muscular system â¢ Nervous system â¢ Reproductive system â¢ Respiratory system â¢ Skeletal system â¢ Urinary system.
An organ is a group of different kinds of tissues working together to perform a particular activity. The heart is an organ composed of muscle, nervous, connective, and epithelial tissues. An organ system is two or more organs working together to accomplish a particular task. The digestive system, for example, involves the coordinated activities of many organs, including the mouth, stomach, small and large intestines, pancreas, and liver.