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 hormones increase intestinal neurotransmitters, increase blood flow to the intestines and support the repair and regeneration of the intestines. Hypothyroidism can slow movement through the esophagus, can affect muscle function in this area and can affect the nerves that cause movement. Hypothyroidism also has an affect on the vagus nerve and this can lead both directly and indirectly to slowing movement through the intestines.