How many organ systems are there in the human body?

The human body has 11 organ systems, which work together to maintain homeostasis and overall function. These systems include the integumentary, skeletal, muscular, nervous, endocrine, cardiovascular, lymphatic (or immune), respiratory, digestive, urinary, and reproductive systems. Each system has specific functions and roles vital for the body’s health and survival. For instance, the cardiovascular system is responsible for transporting blood, nutrients, and oxygen throughout the body, while the nervous system plays a crucial role in communication and response to stimuli. Understanding the number of organ systems and their functions is essential in fields such as medicine, biology, and health sciences, as it forms the basis for more complex concepts regarding human anatomy and physiology.