1. Respiration: The process of breathing in oxygen and expelling carbon dioxide. This is vital for cellular energy production.
2. Circulation: The movement of blood throughout the body, delivering oxygen and nutrients, and removing waste products. This relies on the heart and blood vessels.
3. Digestion: The breakdown of food into smaller molecules that the body can absorb and use for energy and building blocks. This involves the stomach, intestines, and various digestive enzymes.
4. Excretion: The removal of waste products from the body. This includes urination, defecation, and sweating.
5. Movement: The ability to move the body and its parts. This is necessary for locomotion, maintaining posture, and carrying out everyday tasks.
6. Regulation: Maintaining a stable internal environment (homeostasis). This includes regulating temperature, blood pressure, fluid balance, and blood sugar levels.
It's important to note that these functions are interconnected and rely on complex systems within the body. Disruptions in one function can have cascading effects on the others, potentially impacting overall health and survival.
