Anatomy of Hair. A diagram of hair anatomy appears relatively straightforward, but it's actually one of the most complicated structures in the body. Hair is made up the two separate structures: the hair follicle, which exists below the skin, and the hair shaft, which is the hair we see. The hair follicle is the living part of the hair.
How hypothyroidism negatively affects your stomach acid levels. Just as hypothyroidism can result in the drying out of your skin and hair, it also seems to lower the levels of stomach acid in many thyroid patients, possibly by lowering your amount of parietel cells or lowering their ability to produce gastric acid, aka hypochlorhydria.
The thyroid makes two hormones, T3 and T4, that affect your energy levels, mood, weight, and other important parts of your health. The pituitary gland in your brain makes a chemical called TSH, which triggers your thyroid to make T3 and T4.When your pituitary gland produces too much or too little TSH, this can cause your thyroid to be overactive (hyperthyroidism) or underactive (hypothyroidism).his is a blood test that measures your level of thyroid stimulating hormone (TSH). Health care providers use this test to diagnose problems affecting the thyroid. Your thyroid is a butterfly-shaped gland located near the base of your throat above your collarbones.