How does the body work like a system?
959642
the body works like a system because: different cells perform different functions.  A group of cells which perform the same function, make up a tissue.  An organ is made up from a number of different tissues all working together to perform a specific function.  \n\nFor example; certain cells have the ability to contract and relax.  One group of these cells are know as smooth muscle cells - they all have similar structure and function the same way.  A group of these cells working together, make up smooth muscle tissue.  The stomach is made up of a number of different types of tissues, including smooth muscle tissue.  Each tissue in the stomach has a certain job to do.  The smooth muscle tissue is responsible for mixing the food with the various enzymes that other tissues in the stomach produce.  The stomach is an organ because it is made up of many tissues all doing different things in order to accomplish a common goal or goals.  The goals of the stomach are to begin the chemical digestion of food and to churn the food to mix it with the enzymes.\n\nHope this makes sense - it turned out to be a bit wordy.
1151599
The skeletal system is the base for all of the other systems, in your question, muscles are directly attached to bone by tendons and ligaments.  The nerves then run around and through our muscles so when a thought to move is made then the nerve is sent from the brain to the nerves then they send it to the muscle creating a movement.
563473
Homeostasis \nHomeostasis is the physiological process by which the internal systems of the body (e.g. blood pressure, body temperature, acid-base balance) are maintained at equilibrium despite variations in the external conditions. \nThe body can maintain the fluid levels using the kidneys, these organs filter out harmful chemicals and excess liquid into the bladder from which the urine is then expelled.  Body temperature is regulated somewhat by the skin, example, if you are hot you begin to sweat and this helps to cool the body, if you are cold you shiver this helps to raise, the body temperature.
937883
Our heart is a pump, a very efficient one. The whole body consists of various circuits. And there are valves which control the flow of blood. Since the heart pumps blood, that is, it sends the blood at a certain pressure, the flood flows to various body parts and back, whatever the body position is, horizontal or vertical. This applies to the lowest part of our bodies (foot) too, when we stand up.
911687
The correct answer is d\ncells combine to form tissues, tissues make up organs, organs work together in an organ system--put simply.
677265
The Earth and our body exert forces on each other according to Newton's law of gravity.  Essentially mass attracts other mass.
949506
not the whole body, that's many systems.  but yes, it's comprised of every bone in the body
453526
There are two organ systems that work in conjunction with each other to provide tissues with oxygen and remove carbon dioxide.  Those are the respiratory and the circulatory system (the major organs of these systems being the lungs and the heart respectively).\n\nNutrients are provided by the combined actions of the digestive and circulatory system, and wastes are removed through the combined actions of the circulatory and excretory systems.
1005585
1. Living things are complex and highy organized - they are made up of cells which form tissues, which in turn form organs. Even cells are made up of a myriad of organelles.\n2. Livings things are supported by chemical reactions that make up metabolism - organisms perfom chemical reactions at the cellular level which creates energy to carry out ordinary bodily functions. \n3. Living things reproduce, either sexually or asexually, in order to continue the species.\n4. Livings things go through life cycles - human beings, for example, progress from toddler to child to adolescent to adult,\n5. Living things respond to stimuli - they must interact with it environment in order to benefit from it; animals, for example, see with light.\n6. Livings thins adapt to the natural environment by structures, behaviors and physiological processes.
214591
The Nervous system is controlled by electrical impulses that are sent from your brain to you verves.
1115918
nervous system = consist of brain, nerves and spinal cord.\nrespiratory system = for breathing\ncardiovascular system = circulation of blood\ndigestive system = digestion of food\nurinary system = excreting of urine from our body\nlymphatic system = body defenses\nexcretory system = sweat glands\nintergumentary system = skin\nreproductive system = ovary and testes
468578
In general, the endocrine system is in charge of body processes that happen slowly, such as cell growth. Faster processes like breathing and body movement are monitored by the nervous system. But even though the nervous system and endocrine system are separate systems, they often work together to help the body function properly
325086
The central nervous system is made up of the brain and the spinal cord. \nThe peripheral nervous systems is structurally made up of cranial nerves, spinal nerves, ganglia and sensory receptors( eye, ears etc.) Functionally, the PNS is divided into somatic and autonomic. The somatic system is under our control and involves skeletal muscle contraction. The autonomic system is further subdivided into parasympathetic and sympathetic. The  parasympathetic is the system responsible for everyday function such as digestion etc.; it is known as the rest or repose system. The sympathetic acts only when in a stress situation and is related to survival; it is known as the fight or flight system.
41590
Hormonal control is based on the ENDOCRINE SYSTEM. Nervous system control is based on the NERVOUS SYSTEM.\n\nBoth rely on the parts of the brain for control.\nEndocrine or hormonal control is handled through a number of glands like the pituitary gland, the thyroid glansd, adrenal gland and numerous others. These all have a feedback loop that continually adjust levels of certain hormones. These hormones control everything from water balance, blood pressure and sleep cycle to sex drive and reproduction.\n\nThe nervous system has sensory neurons and motor neurons. Some are auromatically controlled while others are voluntary. Some like breathing are both.  Nervous control is impacted by hormonal control and the two systems interact often to maintain homeostasis of the human body.
541977
That's a HUGE question you're asking, if I understand it correctly.  While the body is made up mostly of water, there's also an *enormous* number of biochemicals in the human body working in extremely complex ways, all of which affect human behavior, from whether your hungry to the color of your eyes to whether you're alive or dead.  Even biochemists don't know yet exactly what they all are and how they all work.\n\nA (very) partial list:\n\nhemoglobin\nserotonin\nbrain natriuretic peptide\nadenosine triphosphate\nacid phosphatase\nD-oxy-ribonucleic acid (DNA)\ntriglyceride\npyruvate dehydrogenase\nsuccinyl coenzyme-A synthetase\n1-aminocyclopropane-1-carboxylic acid\nbacteriorhodopsin\nbeta-hydroxy beta-methylbutyrate\nfarnesyl pyrophosphate, geranyl pyrophosphate and other acyclic sesquiterpines\n\n...to name a very few.
211224
The Respiratory system has its central processing functions in the lungs.  The lungs compose of thousands of little "sacks" which expand and contract to breath in and out.  In the lungs oxygen is transferred to the red blood cells which contain haemoglobin.  The haemoglobin is very good at storing/transporting oxygen.  This travels around the circulatory system, and the oxygen rich red blood cells visit cappillaries all throughout the body in order to keep the body functions alive.  The deteriorating effects of Oxygen, however, are what cause us to age.  Oxygen is in fact our source of life, and the reason we eventually die.\n\nThe digestive system is the source for all of our growth.  In order to become larger, we must ingest complex chemical compounds and convert these into proteins.  Energy gained from digestion allows us to function internally as well as externally.  Our digestive system allows the heart to pump and function the circulatory system.  The circulatory system is supplied by both the digestive and respiratory systems and transports Oxygen/proteins/white blood cells, etc. around the body.  \n\nSo these three systems are related in that simple way, but there are many other ways to relate the work the digestive and circulatory system do that affect the respiratory system.
907527
It circulates through your arteries and veins and capillaries and goes through your heart. The system is called the circulatory system.