Human Body Systems
© Dmitrimaruta.
The human body is made up of cells, tissues, organs and organ systems. Each system is made up of its own specialized cells, tissues and organs, which in turn work together to perform specific functions. The functions of some systems overlap, while others are unique to a particular body system.
Find out whese structures look like (anatomy), and learn about their functions (physiology).
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Overview of the Brain
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Our brains provide the integrative power underlying the complex behavior of all vertebrates. It is the control center for thought and creativity, as well as automatic functions of the body. The human brain sets us apart from all other animals.
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Overview of the Cardiovascular System
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The cardiovascular system (also knows as the circulatory system) consists of the heart, a network of blood vessels, and blood. All substances essential for cellular metabolism are transported by the cardiovascular system.
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Overview of the Digestive System
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The digestive system is made up of the digestive tract, a series of hollow organs joined in a long tube. Its primary role is to break down food for use by the body. It also forms, stores and removes waste from the body.
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Overview of the Endocrine System
Slide Set
The endocrine system is comprised of ductless glands that produce messengers, called hormones, which regulate reproduction, development, metabolism and behavior. It interacts with the nervous system to control the activities of other organ systems.
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Overview of the Female Reproductive System
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The female reproductive system is responsible for the production, storage and release of ova. Its two main components are the ovaries and the accessory sex organs.
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Overview of the Heart
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The heart is a muscular organ, the pump at the center of the circulatory system, which carries blood to and from all areas of the body. Blood brings oxygen and nutrients to organs, and picks up carbon dioxide, a waste product, to be expelled by the lungs.
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Overview of the Immune System and the Lymphatic System
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The immune system is a network of cells, tissues and organs that protect the body from infection. The lymphatic system stores and carries white blood cells, and serves as a conduit for transportation and communication between tissues and the bloodstream.
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Overview of the Integumentary (Skin) System
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The integumentary (skin) system is a living boundary that separates the internal body from the external world. It protects the body against disease-causing microobes and helps regulate body temperature.
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Overview of the Male Reproductive System
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The male reproductive system is responsible for the production, storage and transfer of sperm, and also for the production of male hormones. Its main components are the scrotum, penis, gonads and accessory glands and ducts.
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Overview of the Muscular System
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Muscles provide strength and support to the skeletal system. They work in coordination to provide stability, enabling an individual to move, balance and maintain posture by counteracting gravity. Muscles may also provide the body with heat.
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Overview of the Nervous System
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The main parts of the nervous system are the brain, spinal cord and an extensive network of nerves. The nervous system receives, interprets and sends information to and from all parts of the body.
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Overview of the Respiratory System
The respiratory system, composed of lungs, airways, respiratory muscles and blood vessels, serves as the mechanism that brings oxygen into the body and release CO2 out of the body.
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Overview of the Skeletal System
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The skeletal system provides support for the body and, with the muscular system, enables movement. Bones surround and protect organs, conduct vibrations for hearing, and produces bone marrow.
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Overview of the Urinary System
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The urinary system cleanses blood, rids the body of wastes, regulates blood pressure, and helps maintain homeostasis in the body. It is controlled by the nervous system.
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