a.provide a mechanism for rapid response of the endocrine system is to changes in the body\nb.maintain a relatively constant internal enviroment\nc.ensure proper growth and development\nd.allow for a mechanism to control gene action\n\nwich one???
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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
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CORITSOL - "Cortisol secretion is controlled by adrenocorticotrophic hormone from the pituitary. It rises in response to stress and is essential for life. It stimulates gluconeogenesis, breaking down lean tissue, and is anti-imflammoitory"
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A general answer is Chemicals\nCertain chemicals trigger certain chemicals in your body
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They both maintain homestasis, but the big difference is time. Endocrine - slow, long term effects. Nervous system - fast, short lived effects.
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Here are two sites that might help you with your project.  I also found the web-site of a scientist that works specifically with hormonal coordination.\n\nSusan McNabb\nResearch Assistant Professor\n\nsmcnabb@u.washington.edu\nDepartment of Biology\nUniversity of Washington\n\nHope this helps.
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The role of the enzyme is to stabilize the transition state enzyme-substrate complex so that reaction conditions are favorable.  Without the enzyme, many reactions in our bodies would not take place. The enzyme serves as a catalyst for the reaction.
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I would think that it is a mixture of both. Pheremones to attract the other, and hormones to work in your own body?\n\n\nJust a guess.
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Oh wow, that is not a short answer question. Almost everything that happens in biology is controlled to some extent by macromolecules. I'm not sure what level of answer you want but here are some things you can look up.\n\nOK some pointers look up proteins, lipids (also known as fats) and carbohydrates. DNA (and RNA) are other examples of macromolecules. \n\nProteins, lipids and carbohydrates are all used as fuel sources (and storage) for the body. They are all also involved in sending messages around the body. DNA is mainly used to store information.\n\nProteins can be used as catalysts (known as enzymes) and are involved in most of the reactions that occur in the cells.\n\nLipids (or fats) are a long term energy source, they are also used in making the phospholipid bilayer (the plasma membrane) which surrounds cells, they are often used as barriers. They are also used in some hormones.\n\nCarbohydrates primarily serve as a short term energy store and a source of fuel. However they are also used to modify proteins and lipids for different functions.\n\n\nWell these are the main groups there are lots more (and lots of different ways these are used) but this should get you started anyway. Good luck.
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What Is the Endocrine System?\nThe foundations of the endocrine system are the hormones and glands. As the body's chemical messengers, hormones (pronounced: hor-moanz) transfer information and instructions from one set of cells to another. Many different hormones move through the bloodstream, but each type of hormone is designed to affect only certain cells. \n\nA gland is a group of cells that produces and secretes, or gives off, chemicals. A gland selects and removes materials from the blood, processes them, and secretes the finished chemical product for use somewhere in the body. Some types of glands release their secretions in specific areas. For instance, exocrine (pronounced: ek-suh-krin) glands, such as the sweat and salivary glands, release secretions in the skin or inside the mouth. Endocrine glands, on the other hand, release more than 20 major hormones directly into the bloodstream where they can be transported to cells in other parts of the body. \n\nThe major glands that make up the human endocrine system include the:\n\nhypothalamus \npituitary gland \nthyroid \nparathyroids \nadrenal glands \npineal body \nreproductive glands (which include the ovaries and testes) \nThe hypothalamus (pronounced: hi-po-tha-luh-mus), a collection of specialized cells that is located in the lower central part of the brain, is the main link between the endocrine and nervous systems. Nerve cells in the hypothalamus control the pituitary gland by producing chemicals that either stimulate or suppress hormone secretions from the pituitary. \n\nAlthough it is no bigger than a pea, the pituitary (pronounced: puh-too-uh-ter-ee) gland, located at the base of the brain just beneath the hypothalamus, is considered the most important part of the endocrine system. It's often called the "master gland" because it makes hormones that control several other endocrine glands. The production and secretion of pituitary hormones can be influenced by factors such as emotions and changes in the seasons. To accomplish this, the hypothalamus provides information sensed by the brain (such as environmental temperature, light exposure patterns, and feelings) to the pituitary.\n\nThe tiny pituitary is divided into two parts: the anterior lobe and the posterior lobe. The anterior lobe regulates the activity of the thyroid, adrenals, and reproductive glands. The anterior lobe produces hormones such as:\n\ngrowth hormone, which stimulates the growth of bone and other body tissues and plays a role in the body's handling of nutrients and minerals \nprolactin (pronounced: pro-lak-tin), which activates milk production in women who are breastfeeding \nthyrotropin (pronounced: thy-ruh-tro-pin), which stimulates the thyroid gland to produce thyroid hormones \ncorticotropin (pronounced: kor-tih-ko-tro-pin), which stimulates the adrenal gland to produce certain hormones \nThe pituitary also secretes endorphins (pronounced: en-dor-fin), chemicals that act on the nervous system and reduce feelings of pain. In addition, the pituitary secretes hormones that signal the reproductive organs to make sex hormones. The pituitary gland also controls ovulation and the menstrual cycle in women. \n\nThe posterior lobe of the pituitary releases antidiuretic (pronounced: an-ty-dy-uh-reh-tik) hormone, which helps control the balance of water in the body. Antidiuretic hormone also affects the production of oxytocin (pronounced: ahk-see-toe-sin), which triggers the contractions of the uterus in a woman having a baby. \n\nThe thyroid (pronounced: thy-royd), located in the front part of the lower neck, is shaped like a bow tie or butterfly and produces the thyroid hormones thyroxine (pronounced: thy-rahk-seen) and triiodothyronine (pronounced: try-eye-uh-doe-thy-ruh-neen). These hormones control the rate at which cells burn fuels from food to produce energy. The production and release of thyroid hormones is controlled by thyrotropin (pronounced: thigh-ruh-tro-pin), which
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Cortisol secretion is controlled by adrenocorticotrophic hormone from the pituitary. It rises in response to stress and is essential for life. It stimulates gluconeogenesis, breaking down lean tissue, and is anti-inflammatory.
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it's growth hormone(GH), produced by the thyroid gland. the hormone secretion is under the control of another hormone, the Thyrotropic Hormone (TTH) secreted by the pituitary gland. GH stimulates metabolism, thus inducing growth. try looking it up! good luck ;)
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an enzyme is a protein which lowers the free energy needed for it's target molecule or molecules to change their structure. for example - adding a phosphate group to another molecule. there are many ways in which the body regulates the enzymes capacity - some ways are by altering the substrate level - usually more substrate results in higher capacity - note that the change is NOT linear.\nanother way is by regulating the genes coding for these enzymes - inhibiting such a gene will result in lower enzyme levels and thus the overall capacity will be lower. note that in this case, each enzyme will work at it's usual capacity.\nwhat you are asking about is another way of controlling the enzymatic capacity. there are two general ways in which other molecules change the enzymes capacity - it can be competitive inhibition - a molecule which binds to the target site on the enzyme and lowers it's chance of binding to its' target molecule. the other method of inhibition is non-competitive inhibition - in this way a molecule binds to a site other that the target site, causing a conformational change in the enzyme and thus changes the affinity of the enzyme to it's target molecule.\na slightly different mechanism is used only in enzymes which have several sub-units (separate proteins that bind to each other to make one active enzyme). these make up many of the enzymes in our body. the mechanism used here is called allosteric change (note that all other regulation mechanisms are at work in these enzymes as well). allosteric change involves a binding of a molecule to the allosteric site which changes the conformation of the enzyme. this change can activate the enzyme and make it work more effectively, or it can inhibit the enzyme.\nso... an enzyme can be active, and by various mechanisms (involving not only other molecules but also "breaking" of the enzyme into active parts, changes in pH, temperature and more) it can change it's capacity - it can be lowered, inhibited almost completely or increased.
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You should consult a pediatric endocrinologist. \n(1) Treating the underlying cause or disease, such as a tumor in the pituitory gland.\n(2) Lowering the high levels of sex hormones with medication to stop sexual development from progressing. \n Hormones involved in the control of puberty include: \n    • GnRH: Gonadotropin releasing hormone, which comes from the brain in boys and in girls. Other androgens from the adrenal glands (located near the kidneys) produce pubic and axillary hair at the time of puberty. \n  • Estrogen: A female sex hormone, which is responsible for breast development in girls. It is made mainly by the ovaries, but is also present in boys in smaller amounts. \n• Sex Hormones: Responsible for t he development of pubertal signs as well as changes in behavior and the ability to have children. \nIn some cases, treatment of an underlying health problem can stop the precocious puberty from progressing. But in most cases, because there's no other disease triggering the condition, treatment usually consists of hormone therapy that stops sexual development. Other symptoms include:-\n(a) poor grades \n(b) problems at school \n(c) loss of interest in daily activities \n(d) depression.\nIt is not known whether any drug you have taken last year might have triggered such a condition or due to genetic reasons.
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Steroids bind to proteins which then bind to specific regions of DNA utilizing zinc fingers. The protein can then regulate transcription of genes, either by promoting transcription or preventing it.\n\nLactose binds to the LacI protein, allowing the protein to bind to the promoter site on the DNA. This regulates transcription by preventing it from occurring.\n\nTherefore, steroids and lactose are similar because they bind to proteins which then bind directly to DNA to regulate transcription.\n\nHope this helps!
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endocrine glands dump hormones and proteins directly into the bloodstream.  They have a large bloodflow to them, so they can release their products into that blood stream.  Endocrine glands are responsible for a majority of the homeostasis of the body.  look on wikipedia.org for more info.
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wouldn't teh functions of the systems be the same for every organisms.  for example the respiratory system is for breathing in both cows and humans and probably for the toad as well.  the circulatory system is for circulating blood in every organsim.  the excretory system extrects toxins and metabolic wastes and the nervous system allows for cordiation of muscles and autonomic behaviors as well as cognitive thinking.  \n\nhowever the real functions of all these organs is SURVIVAL.  SURVIVAL is the driving force of life and you are kidding yourself if you think otherwise.
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roydiez gives an excellent answer.  I'd like to expand just a little by pointing out that the hormonal explanation is proximate, while the advantage of being ready for childbearing earlier is ultimate.  In other words, differing biological clocks are the method that has evolved to acomplish the biological purpose, which is, healthy babies.\n\nI bring this up because I think making the distinction between proximate and ultimate questions is key to really understanding biology.  And by the way... you're beautiful.  :)