what are the functions of the different parts of animal's body?
916231
Red Riding hood to the wolf..\nMY! what big eyes you have...\nwolf... the better to see you with my dear\nred.... MY! what big ears you have...\nwolf... The better to hear you with my dear\nred... MY! what big teeth you have..\nwolf... The better to eat you with...\nHope this helps and explains somewhat.... lol
889556
1.heart\nMain component of the circulatory system. It pumps blood to spread oxygen and nutrients to all over the body and to get some of the waste.\n2.Lungs\nTo take oxygen and put it in the blood.\n3Liver\nCleans toxins out of your body.\n4Kidneys\nThis one is my weakest answer - I know it helps filter your urine in some way.\n5.Stomach and intestines\nAbsorb nutrients from food.\n6.Mucles\nTo move.\n7.brain\nTo control the body.\n8.Bladder\nSo you don't piss yourself.
635256
The primary function of the uterus is in reproduction; the conduit for sperm transport, and the site for implantation of fertilized ova, placentation,  growth and development of the fetus, and parturition (labor and delivery).
682856
Common animal (including human) organs include the heart, lungs, brain, eye, stomach, spleen, pancreas, kidneys, liver, intestines, skin, uterus, and bladder.\n\nBlood vessels exist in varying calibers:\n\nArteries \nAorta (the largest artery, carries blood out of the heart) \nBranches of the aorta, such as the carotid artery, the subclavian artery, the celiac trunk, the mesenteric arteries, the renal artery and the ileac artery. \nArterioles \nCapillaries (the smallest blood vessels) \nVenules \nVeins \nLarge collecting vessels, such as the subclavian vein, the jugular vein, the renal vein and the iliac vein. \nVenae cavae (the 2 largest veins, carry blood into the heart)
843531
Which animal?  You really have to be specific.\n\nIt can range from growing special structures to attract mates, changing color, ovulating(or going into heat), bulking up(females so that they can provide energy for their young to grow and males if they have to compete).\n\nThere's more...but you have to pick an animal before I can give you all the specifics...but most animals do undergo some changes...some as simple as just getting sexually excited....which is caused by a release of hormones.
627157
In most animals, the main job of the stomach is to break down large fat molecules into smaller ones, so that they can be absorbed into the intestines more easily.\n\n1. The frog has feeble, practically useless teeth unlike humans who use their teeth for mastication in digestion.\n\n2. Solid wastes from the frog's large intestine pass into the cloaca where both liquid and solid waste material leave the body by way of the cloaca and the cloacal vent.In humans liquid waste leave the body by way of the urethra. while solid waste leaves the body by way of the rectum through the anus.
132001
Assuming you're talking about a human being; but should be applicable to all animals containing such organs:\n\nFor existence in general; the heart, as the body can 'live' without a functioning brain or liver for a while.\n\nThen the liver, since eventually the body would poison itself.\n\nThen the brain.\n\nHowever, if you're talking about complete 'removal', you need to define the brain. Are you speaking of the cerebral cortex alone or the whole thing? In the latter case, the heart and brain are equivelent since the lower brain stem controls heart rate (as well as other vital; functions,) and without either, neither would function and the body would die within minutes.
867849
The brain is not part of the circulatory system........it's infact part of the nervous system. \n\nThe nervous system of an animal coordinates the activity of the muscles, monitors the organs, constructs and also stops input from the senses, and initiates actions as well. \n\nThe circulatory system consists of the heart, blood vessels, arteries, veins, capillaries, platelets and the plasma.  It's basically is an organ system that moves substances to and from cells.
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.
943224
The endocrine system  regulates mood, growth and development, tissue function, metabolism, and sexual function and reproductive processes.It is in charge of body processes that occur slowly. The most imporant parts of the endocrine system are hormones and glands. Hormones transfer information and instructions from one set of cells to another and only affect certain cells. Glands produce and secrete chemicals. A gland selects and removes materials from the blood, processes them, and secretes the finished chemical product for use somewhere in the body.
697332
The more advanced ones are:\nBilateral symmetry, unjointed appendages, endoskeleton, segmented body parts.
426636
Gall bladder, tonsils, appendix, one lung, one kidney, arms, legs, several lymph nodes, external genitals, reproductive organs, nose, tongue, teeth, ears, small carefully chosen pieces of the brain, turbinates, eyes, many nerves, most skeletal muscle, a considerable amount of intestine, larynx, lower jaw, many endocrine glands.\n\nThe list gets longer if it's okay to be on life support.
411983
It's not just humans - most mammals (and other animals to a lessor extent) have emotions.  They serve many key functions for survival:\n\nThey give a reason to act.\nThey give a reason for animals to attract each other.\nThey imprint important experiences in the brain.\nThey help animals make decisions.\n\nThere's probably more, but that's a good start.
182809
since in multicellular organisms, the different functions are undertaken by different organs or tissues(as per the level of organism) the functions are more efficient\nsecond is the sexual reproduction
318591
heart, liver, stomach, brain
506353
What kind of receptors? Since different receptors have different functions in the body the area that needs the particaulr role of that receptor will have many more of that receptor than a part of the body that does not need that function.
31165
* Cardiovascular system: blood circulations with heart and blood vessels\n    * Digestive system: processing food with mouth, stomach and intestines\n    * Endocrine system: communicating within the body using hormones\n    * Immune system: defending against disease-causing agents\n    * Integumentary system: skin, hair and nails\n    * Lymphatic system: structures involved in the transfer of lymph between tissues and the bloodstream\n    * Muscular system: moving the body\n    * Nervous system: collecting, transferring and processing information with brain and nerves\n    * Reproductive system: the sex organs\n    * Respiratory system: the organs used for breathing, the lungs\n    * Skeletal system: structural support and protection through bones\n    * Urinary system: the kidneys and associated structures involved in the production and excretion of urine