A drastic change in the metabolic rate of a human would most likely result from the:
A. overproduction of auxins.
B. malfunction of the endocrine glands.
C. deterioration of the skeletal system.
D. oversecretion of the salivary glands.
The thyroid gland, located in the neck, is an endocrine gland that secretes hormones directly into the bloodstream. The hormone thyroxine regulates the rate of metabolism, or how fast or slow you perform life functions. Salivary glands produce enzymes to break down carbohydrates, auxins are the names of plant hormones, and the skeletal system allows us to move.