The thyroid gland or simply, the thyroid (), in vertebrate anatomy , is one of the largest endocrine glands . The thyroid gland is found in the neck , below the thyroid cartilage (which forms the laryngeal prominence , or Adam s apple ). The isthmus (the bridge between the two lobes of the thyroid) is located inferior to the cricoid cartilage . The thyroid gland controls how quickly the body uses energy, makes proteins , and controls how sensitive the body is to other hormones . It participates in these processes by producing thyroid hormones, the principal ones being triiodothyronine (T 3 ) and thyroxine which can sometimes be referred to as tetraiodothyronine (T 4 ). These hormones regulate the rate of metabolism and affect the growth and rate of function of many other systems in the body. T 3 and T 4 are synthesized from both iodine and tyrosine . The thyroid also produces calcitonin , which plays a role in calcium homeostasis . Hormonal output from the thyroid is regulated by thyroid-stimulating hormone (TSH) produced by the anterior pituitary , which itself is regulated by thyrotropin-releasing hormone (TRH) produced by the hypothalamus . The thyroid gets its name from the Greek word for shield , due to the shape of the related thyroid cartilage. The most common problems of the thyroid gland consist of an overactive thyroid gland, referred to as hyperthyroidism , and an underactive thyroid gland, referred to as hypothyroidism .
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Premium Questions (932)
hi doctor... i have pcod and hypothyroid. I have been planning pregnancy for the 1 year and taking the treatment for the same. this month ovaries size has come upto 2.0 mm and after an injection it has got ruptured....
Is marked abnormal XXXXXXX calculators in a thyroid module bad? The module has grown to 2.9x1.9x2.4cm. I was diagnosed with a module about a year ago. I ignored the doctors call because I was so traumatized by the...
I have a nodule above the Adam's Apple that is sore to the touch. I just noticed it last evening. I also have some throat drainage and allergies and possible muscular soreness. Yet, the nodule, which is movable slightly and about the size of a...
Hi, Ive been diagnosed with mctd. Recently I have been having bouts of forgetfulness and clumsyness to where I have fallen on several occasions. Is this normal for mctd? I have extereme fatigue, my hair falls out. ...
i m suffering from throid from ;last 2 years ,it recognised at the time of my first pregnancy, since then im taking 25mg thyroid tablet,now when i gone through this test again in XXXXXXX it has shown increse leve and...
do you answer regarding thyroid issues
2 nodules 4mm and 6mm , mildly enlarged diffuse inhomogenous tsh 3.3 . adviced repeat us in six months age 41 height 5. 4 weight 150 pounds. feel like something is moving in throat. what is the chance of...
Thyroid test done. What is the normal level and medicine to be taken? Is there any food restriction?
my thyroid level is 2.64.
What is the normal level of the same.
if it is high then what is the medication for the same.
is there any food restriction regarding prtection of incresased thyroid level ?
Hi ....I have asked a question on the website earlier and was satisfied with the reply. I am a married woman and my age is 30. In the year 2009, I got detected with hypothyroidism and I have symptoms like hair loss,...
I sleep 8 hours a day.travel for at least 2 and half hours. Sit and work for 8 and more hours.I smoke a cigar per day.Trying to leave that habit and could not do it as i wished.Eat outside for 5 breakfasts and 5 lunches. Parents are diabetic. Dad...
Have you heard of the hcg diet? Are the drops safe? Do you need a prescription for the inhaler. I am on medication for bipolar disorder and I am on thyroid replacement hormone. Are there any drug Interactions?
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Online Doctor Chat (769) - Thyroid
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User : have an issue in my fingers
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User : i had a ct scan done with contrast it came back normal is it possible it missed something?
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Public Forum (3019) - Thyroid
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A painful black slimy thing growing out of my barthole gland hey, im 17 and a virgin , it has recently hurt to go for a wee so i looked with a mirror and for a painful black slimy thing growing out of my barthole gland
3 Answers
Hi, I had pimple type on my back . I was told to visit a eye doctor , they have written on my report l, my eyes has lisch nodules. What does that mean , any side effects.
1 Answer
My one year old has a lump on each of her heels on her feet . There both in the exact same spot and she s had them since she was born. They don t hurt her and she walks fine. I have never been concerned because she has always had them, but my mother is concerned about them. What are the two lumps and should I be concerned?
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hello Doctor...my daughter is 3 years old and is under thyronorm medication since birth ( congenital hypothyroidism ).She takes 62.5 mcg of thyronorm every morning regularly. This morning she just chewed about 10-12 additional 50mcg tablets in a flash before we could realise. We immediately made her vomit things and took her to a nearby hospital...
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I am a male 40 yrs old. I have been having a mild back ache on the upper back. It is at times on the left and at times on the right. I at times also have a mild ache on the chest . It comes and goes.certain days there could be no pain at all.when it is hot, there is no pain. I am having hypo thyroid and taking 50mg eltroxin .
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I have recently developed a lump behind my ear it is exsactley 1cm square if pressure is aplied I suffer quite a lot of pain I think it may be a gland but im not 100% sure.
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Hi Sir m Having Ma Girl Frnd nd She is Suffring From Thyroid ..3 months before v done intercourse nd after it she is having periods with very low bleeding so i m very tensed so pregnancy is possible or nt..according to me if she is pregnant so periods will not cum...now pls tell me what is it
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I was wondering if thyroid problems will cause your sense of smell to be bad? My taste is okay, but I am getting a smell that is unexplainable when I breath in through my nose, and it seems to be worse during times of stress....
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is there any relationship between high prolactin level & pemphigus vulgaris
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I realized from my fiancee dat she has minimum level thyroid . Want to know if this will cause any problem sex
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