Glands & Hormones

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Estrogen is produced in the egg follicle and interstitial cells of the ovaries, according to the Encyclopædia Britannica. The placenta is another major source of estrogen, with adrenal glands and male testes secreting small amounts of estrogen as well.

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  • How does sweat cool you down?

    Q: How does sweat cool you down?

    A: Sweat uses evaporative cooling to maintain body temperature. As liquids evaporate, they shed molecules into the air. The liquid changes into a gas, drawing heat from the liquid. The process draws heat from the body. Evaporation also cools the remaining liquid because faster-moving hot molecules are more likely to escape into the air, according to HowStuffworks.
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  • What is the main function of testosterone?

    Q: What is the main function of testosterone?

    A: Testosterone is the primary male sex hormone, and its main function is to control male physical features. This hormone is created in the testes, and testosterone helps transform a boy into a man. Testosterone deepens the voice, builds muscle, strengthens bones, increases penis size and produces body hair, such as facial hair and pubic hair. Women also produce testosterone; however, women produce the hormone in much smaller amounts.
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  • Where are the lymph nodes located?

    Q: Where are the lymph nodes located?

    A: There are hundreds of lymph nodes throughout the human body, mainly located in the head and neck region according to Mayo Clinic. However, lymph nodes are also found in the arms, legs, abdomen and groin area of the body.
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  • What causes sweating under the arms?

    Q: What causes sweating under the arms?

    A: The human body contains two types of sweat glands: apocrine and eccrine. Apocrine glands are found in the armpit and the groin and increase sweat production in response to emotion, stress and hormones. Eccrine glands are found all over the body and secrete sweat through pores directly onto the skin's surface, cooling the body through evaporation. Both apocrine and eccrine glands cause underarm sweating.
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  • How do you speed up your thyroid?

    Q: How do you speed up your thyroid?

    A: According to The Dr. Oz Show, speeding up the metabolism can be done by eating foods rich in iodine and avoiding foods known as goitrogens, which slow down the metabolism. Working out every day and enhancing thyroid function with supplements also helps to increase the thyroid function.
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  • What is the function of the mammillary bodies?

    Q: What is the function of the mammillary bodies?

    A: Although studies into the structures is causing some scientists to question human understanding of them, mammillary bodies primarily act as relays for impulses that travel through the brain. Additionally, the bodies appear to be very important in forming and recalling memories. Destruction or injury to these portions of the brain is often associated with amnesia.
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  • How do sweat glands regulate body temperature?

    Q: How do sweat glands regulate body temperature?

    A: According to the Encyclopaedia Britannica, sweat glands regulate body temperature by secreting water onto the surface of the skin where heat is then removed by evaporation. There are two types of sweat glands found only in mammals, the eccrine sweat glands and the apocrine sweat glands. The eccrine sweat glands are controlled by the sympathetic nervous system and are responsible for regulating body temperature.
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  • What is the largest gland in the human body?

    Q: What is the largest gland in the human body?

    A: The liver is the largest gland in the human body. It is also an essential organ of the digestive system and has a wide array of functions.
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  • What organ produces estrogen?

    Q: What organ produces estrogen?

    A: Estrogen is produced in the egg follicle and interstitial cells of the ovaries, according to the Encyclopædia Britannica. The placenta is another major source of estrogen, with adrenal glands and male testes secreting small amounts of estrogen as well.
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  • How many glands does the human body have?

    Q: How many glands does the human body have?

    A: The human body contains as many as nine ductless glands and five ducted glands, depending on gender and physiology. These 14 major glands are essential for conducting a wide range of key biological processes.
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  • What results from increased insulin?

    Q: What results from increased insulin?

    A: According to Web MD, consequences of having too much insulin circulating in the bloodstream include hypoglycemia or low blood sugar, dizziness, shakiness, sweating and irritability. In severe cases, increased levels of insulin cause fainting and unconsciousness, seizures and coma. Severely elevated insulin levels are most often experienced by diabetic patients who overdose on their insulin injections.
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  • What makes people cry?

    Q: What makes people cry?

    A: Crying is a release of built up emotions and is a way for the emotions to come out of the body in physical form. People generally cry when they are happy, sad, in awe of something or otherwise overwhelmed by a large amount of any emotion.
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  • Why is the endocrine system important?

    Q: Why is the endocrine system important?

    A: According to TeensHealth, the endocrine system is important because it regulates tissue function, mood, metabolism, growth and development, sexual function and reproductive processes. It influences nearly all cells, organs and functions of the human body. It is responsible for body processes that occur slowly, such as cell growth.
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  • What hormone does the thymus gland produce?

    Q: What hormone does the thymus gland produce?

    A: The thymus gland produces the hormone Thymosin, which stimulates the production of antibodies. The Thymus also creates T-lymphocytes, which are white blood cells used to combat infection and abnormal cells, and Thymopoietin, which is a protein present in mRNA.
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  • Q: What is the function of salivary amylase?

    A: Salivary amylase is an enzyme responsible for breaking down starch, according to Dr. Michael J. Gregory, a professor of science at Clinton Community College. Starch is a polysaccharide, which is a type of carbohydrate made up of monosaccharide or disaccharide units linked by glycosidic bonds, explains About.com contributor Dr. Anne Marie Helmenstine.
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  • Q: How are hormones transported in the body?

    A: According to the BBC, blood and plasma transport hormones around the body. Many attach to hormone-specific plasma proteins, while others are free-roaming. They travel throughout the body via the extensive and complex system of blood vessels, the veins and capillaries.
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  • Q: Where is bile secreted?

    A: Bile is secreted by the liver, which is the largest organ in the body. Bile helps in the digestion of food and the elimination of waste from the body. It is a dark green liquid that is stored in the gallbladder and then released into the duodenum.
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  • Q: What are the effects of female hormones on men?

    A: The impact of female hormone therapy on the male body includes the growth of breast tissue, a softening of the skin, a reduction in body hair growth, changes in fat distribution and muscle mass, changes in the genital region, and infertility, notes TransGenderCare.
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  • What does the adrenal gland do?

    Q: What does the adrenal gland do?

    A: The adrenal or suprarenal gland secretes hormones into the bloodstream, says Innerbody. The outer layer of the gland, called the cortex, is yellowish in color and secretes hormones called steroids.
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  • Q: What is adiponectin?

    A: Adiponectin is a protein hormone that is only produced and secreted by adipocytes, or fat cells. It is used to regulate the metabolism of glucose and other lipids by heightening how fast the body breaks down fat cells, and influences how the body responds to insulin.
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  • Q: What is the difference between cellular and humoral immunity?

    A: Cell-mediated immunity uses T cells to tag and destroy foreign antigens, while humoral immunity utilizes B cells. The human immune system uses two types of immunity to fight disease: cellular, or cell-mediated, immunity and humoral immunity.
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