Question

Why is the body so carefully organized?

Answer 1

Answer:

In multicellular organisms, including humans, all cells, tissues, organs, and organ systems of the body work together to maintain the life and health of the organism.

Answer 2

Humans, like other multicellular organisms, have organ systems that work together to carry out operations that keep us alive.

• The body is organised on several levels. Tissues are made up of cells, organs are made up of tissues, and all these together function to form an organ system.
• Levels of Organisation: Cells→Tissues→Tissue systems→Organ→Organ Systems→Organism. Structure and function are interconnected at every level of an organization.
• The integrated activity of an organ system's organs determines its function.
• The organism's life is dependent on the coordinated activity of all organ systems, which is frequently coordinated by the endocrine and neurological systems.
• In complex multicellular animals, most cells do not directly exchange items such as nutrition and wastes with the external environment; instead, they are surrounded by an internal environment of extracellular fluid.  
• This extracellular fluid provides oxygen and nutrition to the cells while also releasing waste materials. Humans and other complex organisms have specific systems that keep the interior environment stable and capable of meeting the needs of the cells.
• These various systems are interdependent due to their specialised nature.
• The digestive, muscular, skeletal, reproductive, and excretory systems all require oxygen from the respiratory system to function, and the respiratory system's cells, like those of all the other systems, require nutrients and must eliminate metabolic wastes.
• All of the body's systems work together to keep an organism alive and well.