Your bones and muscles work together to support and move your body. Your respiratory system takes in oxygen from the air. Your circulatory system carries oxygen, water, and nutrients to cells throughout your body. Wastes from the cells are eliminated by your respiratory system, your excretory system, and your skin.

Exercise stimulates the sympathetic nervous system and will induce an integrated response from the body; This response works to maintain an appropriate level of homeostasis for the increased demand in physical, metabolic, respiratory, and cardiovascular efforts.

Some organs are in more than one system. For example, the nose is in both the respiratory system and also is a sensory organ in the nervous system. The testes and ovary are both part of the reproductive systems and endocrine systems.

Major Organ Systems

Body Systems, Functions, and Organs

Humans have five vital organs that are essential for survival. These are the brain, heart, kidneys, liver and lungs. The human brain is the body’s control center, receiving and sending signals to other organs through the nervous system and through secreted hormones.

According to anatomy studies [50], human body parts can be divided into nine different parts by position: the head, neck, chest, abdomen, pelvis, back, hip, extremity, and trunk. In our ontology, the nine anatomical positions are regarded as the top level.

The human body is a well-developed machine that moves efficiently. The bones and muscles together make the body move. Both are needed to make the body walk, run, jump, or preform any other motion that the body is capable of.

The human body is a single structure but it is made up of billions of smaller structures of four major kinds: cells, tissues, organs, and systems.

The main systems of the human body are:

• Circulatory system / Cardiovascular system:
• Digestive system and Excretory system:
• Endocrine system:
• Integumentary system / Exocrine system:
• Immune system and lymphatic system:
• Muscular system:
• Nervous system:
• Renal system and Urinary system.

Other organ systems present in your body are the circulatory, respiratory, muscular, digestive, integumentary, endocrine, reproductive, and nervous systems. All of these systems have specific functions but they cannot function independently.

Understanding the 11 Body Organ Systems

• Circulatory.
• Lymphatic.
• Respiratory.
• Integumentary.
• Endocrine.
• Gastrointestinal.
• Urinary.
• Musculoskeletal.

They are the endocrine system, immune system, lymphatic system, reproductive system, skeletal system, and urinary system. To better understand how the human body systems work….

The brain

Theoretical physicist Michio Kaku said, “The human brain has 100 billion neurons, each neuron connected to 10,000 other neurons. Sitting on your shoulders is the most complicated object in the known universe.” As long as humans have existed, people have sought to comprehend the brain.