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.
Thyroid Gland, How it Functions, Symptoms of Hyperthyroidism and Hypothyroidism. The thyroid gland is a butterfly-shaped organ located in the base of your neck. It releases hormones that control metabolismâthe way your body uses energy. The thyroid's hormones regulate vital body functions, including: Breathing. Heart rate. Central and peripheral nervous systems. Body weight. Muscle strength.