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Oct 19, 2020 · Definition. Body systems are groups of organs and tissues that work together to perform important jobs for the body. Some organs may be part of more than one body system if they serve more than one function. Other organs and tissues serve a purpose in only one body system. Examples include the respiratory system, nervous system, and digestive ...
- Skeletal system. The skeletal system is composed of bones and cartilages. There are two parts of the skeleton; axial and appendicular. The axial skeleton consists of the bones of the head and trunk.
- Muscular system. The muscular system consists of all the body muscles. There are three muscle types; smooth, cardiac and skeletal muscles. Smooth muscle is found within walls of blood vessels and hollow organs such as the stomach or intestines.
- Cardiovascular system. The cardiovascular system is comprised of the heart and the circulatory system of blood vessels. The heart is composed of four chambers; two atria and two ventricles.
- Respiratory system. The respiratory system consists of a series of organs; the nasal cavity, pharynx, larynx, trachea, bronchi, bronchioles and lungs (alveoli).
- Respiratory System. It executes the gas exchange between cells and the environment and includes trachea and lungs. The respiratory system takes oxygen from the environment and converts it into a form that cells can use.
- Digestive System or Excretory System. This system intakes food, breaks it down into usable nutrients and excretes solid waste products. It includes the mouth, esophagus, stomach, and intestines.
- Cardiovascular or Circulatory System. This system moves materials between body systems, including oxygen, nutrients, hormones, and waste products. It includes the heart, arteries, and veins.
- Renal System or Urinary System. It cleans dissolved waste products from the blood and excretes them. It includes kidneys and bladder. All blood is passed through the kidneys, where special filters allow dangerous substances to pass out of the bloodstream while keeping helpful substances in.
Nov 12, 2024 · The nine major organ systems in the human body are the integumentary system, the musculoskeletal system, the respiratory system, the circulatory system, the digestive system, the excretory system, the nervous system, the endocrine system, and the reproductive system. human body, the physical substance of the human organism, composed of living ...
- The Editors of Encyclopaedia Britannica
- Cardiovascular system. The heart and blood vessels make up this system. The heart is a pump forcing blood into a network of blood vessels allowing it to travel to organs and delivery sites requiring oxygen gas for respirationnutrients and the removal of waste substances.
- Digestive system. This system resembles a long tube with attached organs. Ingested food is broken down into constituent nutrient molecules that are then absorbed into the bloodstream.
- Endocrine system. Composed of a number of small organs distributed throughout the body, the endocrine system coordinates the metabolic activity of body cells by interacting with the nervous system.
- Excretory system. The excretory system is composed of the kidneys (urine-forming organs), the bladder (temporary storage for urine) and channels for moving this liquid waste around.
Oct 22, 2024 · This system processes sensory information, regulates bodily functions, and facilitates communication between different body parts. The brain processes an immense amount of information every second, controlling cognitive functions, emotions, and sensory data interpretation. The spinal cord relays messages between the brain and peripheral nerves.
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Apr 5, 2024 · The different systems of the body interact with and rely upon one another. (Image credit: colematt via Getty Images) Immune: The immune system is the body's defense against bacteria, viruses and ...
