The master glands control the body's hormone production.

The snake's poison glands are located in its head.

The mammary glands produce milk to nourish the young.

Exocrine glands secrete substances through ducts.

The parathyroid glands regulate the levels of calcium in the body.

The thyroid glands produce hormones that regulate metabolism.

The pituitary glands are responsible for regulating hormone production in the body.

The salivary glands produce saliva to help with digestion.

The ductless glands in the human body play a crucial role in regulating various physiological processes.

The endocrine glands secrete hormones into the bloodstream.