Types of Systems in the Human Body

The human body is a complex machine that must simultaneously handle vast amounts on incoming sensory data, movement and balance, maintaining proper temperature and metabolism. It has a number of separate systems that compliment one another and that all contribute to maintaining a stable internal environment (known as homeostasis). Six of the main systems are discussed below.

Skeletal system

The skeletal system is made up of bones and connective tissues that provide bodily structure and organ protection.

Muscular System

The muscular system handles voluntary and involuntary motions. It is made up of skeletal, smooth and cardiac (heart) muscles.

Circulatory system

The circulatory system is composed of the heart, arteries and veins. It handles transporting blood and waste throughout the body.

Respiratory System

The respiratory system is tasked with bringing fresh air into the system, and also with carbon dioxide removal. It is made up the lungs, nose and trachea.

Digestive System

The digestive system breaks down food into components the body can use and includes the mouth, stomach and intestines.

Nervous System

The nervous system is composed of the brain, spine and nerves. It is tasked with transmitting signals throughout the body.

References

• Your Body's Systems