Body Systems | Definition, List of Body Systems and Functions

By | September 28, 2019

Body Systems

Body Systems Definition:

The body systems are the group of organs and tissues that work together in order to perform important functions in the body. Some of the organs may be part of more body system if they perform a function more than one. Other many organs and tissues perform a function in only one body system.

Body Systems

Body Systems Overview:

An organism needs all body systems for survival and reproduction. Many functions performed by the system of the human body in all animals.

These functions must be performed by animals in order to the survival of their lives.

  • Firstly, the most important function is the oxygen inhaling for cellular respiration and exhaling waste carbon dioxide.
  • The body system must be able to transport necessary substances to all cells including oxygen and nutrients.
  • The body must be able to ingest and process food in order to gain sugar and other nutrients.
  • The process of clear toxic wastes materials forms the body.
  • The protection of body organs from the environment.
  • The act of responding to the environment.
  • The body system must be able to fight against infections.
  • The process of reproduction of individuals must be occurring for species to survive.

Many organs and tissues work together to perform their functions.

Body Systems

List of Body Systems and Functions:

There are many body systems which perform many functions.

  1. Respiratory System:

The respiratory system permits gas exchange between the cells and the environment. It includes trachea and lungs.

Respiratory System Function:

The respiratory system is the process in which the body inhales oxygen inside from the environment and converts it into the form which is used by the cell.

In humans, the respiratory system is the process in which the lungs take oxygen from the environment and diffuse it into the blood. The lungs work bypassing a large amount of blood to the gas exchange membranes. The whole blood volume of the body passes over the membranes about once per minutes.

The lungs also exhale carbon dioxide which is a waste substance of cellular respiration.

Body Systems

  1. Digestive System / Excretory System:

The digestive system is a process in which food ingests and breaks it into the usable nutrients. By this process, excretion of solid waste substances takes place. This process includes the mouth, esophagus, stomach, and intestines.

Digestive System / Excretory System Function:

In the digestive system, food takes in and breaks it into useful nutrients. The most important function of food is to serving as cellular fuel; including carbohydrates, fats, and proteins. It all can be used by cells as a source of energy.

When foods enter in the body, it is chewed by mouth in order to break into mush which stomach acids can be penetrated. In the stomach, special enzymes and acids which break the food into useful nutrients. Then, it passes by intestines, squeezed by a huge area of a narrow tube of intestine to ensure that many useful materials extracted by the food as possible. The digestive system also extracts solid waste material of food which is not useful for the body.

Body Systems

  1. Cardiovascular / Circulatory System:

In the circulatory system, materials move between the body system including oxygen, hormones, nutrients, and waste products. This process includes the heart, arteries, and veins.

Cardiovascular / Circulatory System Function:

The circulatory system is a highly efficient system in order to move substances around the body. The entire blood volume of the body takes about a minute in circulating makes the high-speed expressway for disturbing the oxygen, messages, nutrients, and removal of wastes.

The heart is an important part of the circulatory system which sends the blood to throughout the body at high speed. The arteries work as an oxygen delivery system which carries oxygenated blood through the body with very high speed and pressure. The veins return the blood toward the heart after when its oxygen removed. Finally, the tiny blood vessels, known as capillaries carry the blood throughout tissues. The capillaries ensure the essential delivery when blood passing close to every cell.

The circulatory system carries the waste minerals away from the cells. It delivers carbon dioxide to the lungs and many other toxins to the liver and kidneys in order to destroyed or excreted.

Body Systems

  1. Renal System / Urinary System:

In the renal system, the dissolved waste products clean from the blood and their excretion takes place. This process includes kidneys and bladder.

Renal System / Urinary System Function:

The renal system keeps the body healthy by removing dangerous waste materials from the body and expels them in the form of urine.

All the blood passes by kidneys, where special filters permit dangerous material to pass out the bloodstream. The waste liquid filtered by the kidneys and then stored in the bladder until the body expels it.

body systems

  1. Endocrine System:

In the endocrine system, the body secrets chemical signals which permit the body system to work as cooperatively as need. This process includes hormone which produces tissue of pineal gland and pituitary gland in the brain; the thyroid gland, adrenal gland, the pancreas, and the ovaries and tests.

Endocrine System Function:

The endocrine system is composed of a number of tissues which send chemical messages, known as hormones. Each message has a specific purpose.

The endocrine system permits the body to respond to environmental changes and other kinds of survival changes like the need for reproduction. Some examples of messages sent by the endocrine system are Fight-or-Flight, Reproductive signals, and Hungary or full.

body systems

  1. Nervous System:

The nervous system permits perception, emotions, thought and quick responses to the environment. This system includes the brain and nerves.

Nervous System Function:

The nervous system permits to sense stimuli including light, smell, sound, and touch from the environment. It also permits quick communication of stimuli in the body including the sensation of pain, wellness, and illness.

It also gives the brain to huge processing system until they combine these stimuli. Another important function is to permits the brain to send signals back to the body and enables to respond to environmental stimuli.

body systems

  1. Musculoskeletal System:

The musculoskeletal system permits the body to move according to given commands.

Musculoskeletal System Function:

In the musculoskeletal system, the system of muscles throughout an organism operates in order to move organisms and stimulate internal organs. Some main types of the musculoskeletal system in mammals are; smooth muscle, skeletal system, and cardiac muscle.

The cardiac muscle surrounds the heart and performs important function in the circulatory system. The smooth muscle covers many internal organs and responsible for holding specific passages shut, erecting hairs, and moving food through the gut in an action, known as Peristalsis. Skeletal muscle works by attaching to skeleton and contraction or relaxation.

Skeletal System Function:

The skeletal system of animals contains either an endoskeleton or exoskeleton, lies in insects or arthropods. Some the animals use water pressure as a form of a skeleton, which is called Hydrostatic Skeleton. There is no matter of which skeleton is used, the skeleton system as main functions of supporting and attaching for the muscles.

body systems

  1. Integumentary System / Exocrine System:

In the integumentary system, the covers of the body take place and regulate it exchange with the outside environment. This process includes skin, hair, nails, sweat, and other glands that secrete substance on the skin.

Integumentary System / Exocrine System Function:

The skin is the first line of defense in the body against the bacteria, viruses, injuries and other more. Skin is also responsible for controlling heat and water loss to the environment, also permit humans to sweat. The goosebumps are also part of skin regulation system.

The skin is complex material that scientist cannot reproduce it artificially. Skin is a living tissue that constantly maintained by the circulatory system and a number of glands which secrete oils and other material which keep skin from drying and cracking.

body systems

  1. Lymphatic System / Immune System:

In the lymphatic system, the body fights against infection. This act includes lymphatic vessels that permeate the body.

Lymphatic System / Immune System Function:

Every organism which is composed of delicious carbohydrates, proteins, and lipids, the other organism wants to eat it. In the animals, there are white blood cells present in the blood which specially target and destroy invading microscopic pathogens.

The lymphatic system carries water, white blood cells, and other substances. It does not carry red blood cells and platelets, because it is not main carrier of the body for oxygen, lymph moves slower than the bloodstream. People without the functioning of the immune system may be contracted the fatal infection.

body systems

  1. Reproductive System:

In the reproductive system, the process of producing offspring takes place. This process includes ovaries, uterus, mammary glands (breast), penis, and testes.

Reproductive System Function:

The reproductive system is necessary for the survival of the species. In humans, there are two different reproductive system lies; one is a male system, which concerned with producing perms and finding mates; and other is the female system, which prepares for pregnancy, childbirth, and care of the baby for reproduction successfully.

The biggest effect of reproductive hormones is on reproductive organs themselves that bring eggs from maturity and prepare uterine lining, which is rich in blood vessels and to nurture the possible embryo.

body systems