a
hormone that regulates the
body's growth and development.
a large ductless gland at the front of the neck, secreting a
hormone that regulates the
body's growth and development.
a large gland at the front of the neck, which secretes a
hormone that regulates
body growth and development.
a large gland at the front of the neck, which secretes a substance that regulates the
body's growth and development.