Hormones

Question: hormones?? what four hormones are important in controlling menstrual cycle and preganny and breast feeding and what are the functions of each??

Answer: Estrogens Function : * development of breasts * further development of the uterus and vagina * broadening of the pelvis * growth of pubic and axillary hair * increase in adipose (fat) tissue # participate in the monthly preparation of the body for a possible pregnancy # participate in pregnancy if it occurs Progesterone: Progesterone is also a steroid. It has many effects in the body, some having nothing to do with sex and reproduction. Here we shall focus on the role of progesterone in the menstrual cycle and pregnancy estrogen : About every 28 days, some blood and other products of the disintegration of the inner lining of the uterus (the endometrium) are discharged from the uterus, a process called menstruation. During this time a new follicle begins to develop in one of the ovaries. After menstruation ceases, the follicle continues to develop, secreting an increasing amount of estrogen as it does so. TSH, FSH, and LH HCG behaves much like FSH and LH with one crucial exception: it is NOT inhibited by a rising level of progesterone. Thus HCG prevents the deterioration of the corpus luteum at the end of the fourth week and enables pregnancy to continue beyond the end of the normal menstrual cycle. I hope that helps you :)

Question: How are hormones distributed to tissues, and what determines which cells a hormone will affect? How are hormones distributed to tissues, and what determines which cells a hormone will affect? A) They are carried throughout the body in the bloodstream, and each hormone affects the target cells responsive to it. B) They are carried to specific organs by lymphatic vessels and affect the cells in those organs. C) They are carried to specific organs by ducts and affect the cells in those organs. D) They are delivered by neurosecretory cells to specific tissues and cells, which are affected. E) They are distributed locally in the interstitial fluid and affect nearby responsive target cells.

Answer: A) They are carried throughout the body in the bloodstream, and each hormone affects the target cells responsive to it.

Question: How do hormones affect the overall mood of teenagers? Obviously, hormones play a big part in the mood of people and especially teenagers. Puberty brings about drastic changes within an individual's life. What specific hormones influence teenagers' moods? What specific hormones influence guys/girls that are not in the opposite sex? Sources would be amazing.

Answer: Although brain chemical imbalances that cause depression are complex, researchers believe that a few main hormones are responsible for promoting feelings of wellbeing. These hormones are norepinephrine, dopamine and serotonin. Another name for these hormones is monoamine transporters; that is they carry important messages along the neural pathway in the brain. Where an imbalance of these hormones occurs, a mood, energy or cognitive problem results. This is why these hormones are closely associated with depression. Norepinephrine Norepinephrine is produced by the adrenal glands and nerve cells to help us maintain energy and activity. Norepinephrine is also called noradrenalin and behaves similar to adrenalin, in that it is released in reaction to anger or emergency. As with serotonin related antidepressants, norepinephrine related medications do not increase levels of norepinephrine, but attempt to help the sympathetic nervous system to process it more efficiently. Dopamine Dopamine is associated with euphoria and our desire or motivation. Dopamine is also connected with the information pathway in the brain. A dopamine disorder or imbalance can cause memory and cognitive loss as well as difficulty with problem solving. Serotonin Serotonin may help us feel energetic, calm and assured. Most mood problems are associated with serotonin imbalances. Because the vast majority of depression sufferers may have low levels of serotonin, and because most medications seek to increase serotonin levels, serotonin is discussed here in more detail. Low levels of serotonin not only affect mood, but the ability to cope with strong emotions. Low serotonin may also inhibit sensitivity to possible consequences, which may explain why aggression, impulsive behavior and suicide are prolific in people with low serotonin levels. we are all subject to these hormones regardless of age..^_^

Question: How do steroid hormones diffuse through the cell membrane? I know that steroid hormones are fat-soluble and the core of the plasma membrane is hydrophobic. But when steroid hormones encounter the cell membrane, it's the hydrophilic "heads" of the bilayer that come into contact with them first. Since non-polar substances do not dissolve well in polar substances, how come steroid hormones are still capable of diffusing through the phospholipid bilayer?

Answer: I think you're a bit confused to what hormones are. Hormones are slow, long-lasting messages induced by the body or a drug. Steroid hormones would attach to a receptor which is complementary to the hormone's shape. When the hormone is attached to the complementary site of the receptor, the receptor gives messages to the cell which change it's environment. But when you're talking about things DIFFUSING across a cell membrane, that implies a molecule or an ion traveling across a protein carrier or channel. That type of diffusion is called facilitated diffusion. Whether energy is needed, that would be considered to be active transport.

Question: When do hormones start to decrease in intensify? I'm 17, I know hormones can be crazy, and can cause things like acme, but at what age do hormones stop being so crazy?

Answer: I'm 17 too and i have already experienced a dropoff in hormones. But its different for each person, so best f luck with your body ;)

Question: What are three different hormones in the human body? Which glands secrete these hormones? Which organs are the target organs of these hormones? What are the purposes served by these hormones?

Answer: 1.Erythropoietin EPO secreted by the kidney and stimulate erythrocyte production in bone marrow. 2. Follicle-stimulating hormone FSH secreted by anterior pituitary and:- In female: stimulates maturation of Graafian follicles in ovary. In male: spermatogenesis, enhances production of androgen-binding protein by the Sertoli cells of the testes 3.Gastrin GRP secreted by stomach,and causes secretion of gastric acid by parietal cells.

Question: What are 4 hormones in females that are involved in producing eggs during the menstrual cycle? (HINT: you should include two anterior pituitary hormones and two ovarian hormones.) Where does the egg get implanted after it is fertilized? Paragraph

Answer: Good question !! The four Hormoes that are involved in the Menstural cycle are :- 1) FSH or Follicle Stimulating Hormone. 2) LH or Luteinizing Hormone. 3) Oestrogen. 4) Progestrone. FSH and LH are the hormones sereated by PITUTAR GLAND. Oetrogen and Progestrone are sereated by Ovary. In mammal reproduction, After fertilization has taken place the zygote travels down the fallopian tube, while dividing to form more cells without the zygote actually gaining in size. This cell division is mitotic, and is known as "cleavage" For your feed back please meil me to [email protected]

Question: What hormones are released in a person's brain when they see a physically attractive person? I want to know which hormones are released and what parts of the brain are stimulated as a result of physical attraction. My main goal is to answer the question of why placing an attractive model on the cover of a magazine helps more copies to be sold than if it were merely an average-looking cover model. I would like to explain this phenomenon by knowing the biological responses that occur. Thanks!

Answer: dopamine

Question: What hormones infuence the shedding of leaves, and how do they work? What hormones infuence the shedding of leaves, and how do they work?

Answer: Abscisic acid (ABA), named for its effect on leaf abscission, reverses the effect of growth-stimulating hormones (auxin, gibberellins, cytokinin). In leaf and fruit drop ABA counters the auxin that acts to retain the them during growth and development. ABA is involved in dormancy beyond dropping leaves it inhibits shoot growth but does not have as much affect on roots or may even promote growth of roots even in dormancy. It keeps seeds dormant until growth conditions are met.

Question: What hormones cane be used to alter human fertility and what are the effects? I have to do an essay and we have to talk about the good points and the negative points about using reproductive hormones to alter human fertility. HELP! Please! =D

Answer: progesterone and oestrogen are the main hormones used to reduce human fertility whereas LH and FSH are used to promote it. All of which are found naturally in the body. There has been many links between the contraceptive pill, which contains progesterone and oestrogen, with cancer. However, without oestrogen in the body, which occurs during the menopause, osteoperosis is more likely to occur as the blood-calcium levels are increased so the bone-calcium levels are decreased. LH and FSH cause the production and release of the follicles into the fallopian tube, so when this is increase more eggs are released making the probability of pregnancy much higher. However, this does run the risk of more then one follicle being fertilised. If many are then some will have to be removed to preserve the mothers health. This can stimulate many ethical arguments about right to life for the unborn child. Hope this gets you started

Question: What hormones do you produce right before your period? I usually have a little acne throughout the month but around the week before my period, my skin clears completely up. I would like to know what kind of hormones am I producing at this time?

Answer: you have a bit higher levels of estrogen

Question: What exactly are the hormones that make men and women so different? Sorry if it's a dumb question, just growing up, all through health class, they're as vague as they possibly could be. They told us ages ago that men and women are different because we have different hormones that make us different. Well, I'm irritated by the vagueness. What are those hormones that make us different? What specifically is it that influences to act like a woman or a man? I realize there are many and many. I just curious for the main ones. Sorry, I'm really dumb on this subject, but I have a really big interest in it I already understand the physical aspect of the hormones making us different. I was sorta more looking for the mental factors. But any answers are appreciated :)

Answer: well women have estrogen and men have Testosterone Estrogen's are the sex hormones produced primarily by a female's ovaries that stimulate the growth of a girl's sex organs, as well as her breasts and pubic hair, known as secondary sex characteristics. Estrogen's also regulate the functioning of the menstrual cycle After puberty, androgens, specifically testosterone, play a role in the regulation of the sex drive. Large deficiencies of testosterone may cause a drop in sexual desire, and excessive testosterone may heighten sexual interest in both sexes. However, testosterone levels are poorly correlated with sexual interest and drive when they are within the average range. Sex drive is much more likely to be affected by external stimuli (sights, sound, touch) than by variations in sex hormones, except in extreme cases. i kind of didn't read that i just skimmed through it && copied and paste. i hope that's not illegal naaa i don't think but i hope i helped

Question: What are some inexpensive plant hormones and where can I find information on them? I'm doing an experiment in science related to the effect of hormones on plant growth. I need to know some inexpensive hormones and where i can find online information on them. Thanks!

Answer: Do a google search for "auxins". Also, willow twigs produce plant "growth hormones" if placed in a jar of water. The water can then be used to stimulate other plant cuttings to grow roots.

Question: How large will cats grow when given growth hormones? I have bought some bacteria and some restriction enzymes and the DNA sequence of the cat growth hormone. I plan to splice the DNA into the plasmids of the bacteria to make them start synthesizing the protein. I do not plan to actually put the growth hormone into any cats yet without extensive research and planning. I know that to much growth hormones can lead to the desegregation of joints and other bad effects but i was wondering if the cats can be some how prepared for the extensive extra growth.

Answer: Without splicing in new genes, maybe 20% bigger than its siblings. Even if you made a 5kg cat a muscular 8kg, still longway from leopold size. Its offspring though would still be normal size as its genetic blueprint was not changed. True the growth hormones could make it sex mad but infertile.

Question: What growth hormones do I need to take to grow about 3 inches? I'm fifteen, turning 16 in 2 months I'm short for my age and I wanted to know which growth hormones that would help me grow 3 inches or more. I'm 5'6" (five foot six inches). Where can I get them and are they cheap? Are they safe? Can they be prescribed by a Doctor? I really need to grow taller. Everyone I used to be taller than is now taller than ME its embarrasing.

Answer: You're still growing. If you want to see about growth treatment, you'll need to see your doctor. Prescription only and they are not cheap.

Question: How can I get my hormones back to normal? I'm 16 and my periods are all over the place and it's been like this for 2 and a half years now, sometimes I go for months without having any. Does anyone know anything of how I can get my periods back monthly. The Doctor said to me that its my hormones and they are all over the place, so how do I get my hormones back to normal? Give me any ideas or rumours that you've heard that could possibly help.

Answer: The contraceptive pill would stabilise you, however it would do so by taking control of your hormones rather than sorting your own body functions. This may be the only alternative other than letting nature get on with it.