The thyroid gland is part of the endocrine system (along with the adrenal glands, hypothalamus, pituitary, ovaries, and testes, and other endocrine organs). The thyroid gland releases hormones into ...

It's lined with mucous and helps regulate pressure around the eardrum so that sound waves can be transferred. Ears can vary, so what's considered normal anatomy of the inner or outer ear in one person ...

People with cystic fibrosis (CF) have higher chloride levels due to a genetic defect that disrupts this process. The sweat test is usually recommended for newborns with abnormal screening results ...