Which gland or organ has cells that release glucagon?

A) Thyroid
B) Parathyroid
C) Adrenal
D) Pancreas
E) Hypothalamus

Glucagon

A hormone produced by the pancreas that raises blood glucose levels, acting as a critical counter-regulatory hormone to insulin.

Thyroid

A gland in the neck that produces hormones regulating growth and metabolism.

Adrenal

Pertaining to the adrenal glands, small glandular organs located above the kidneys that produce hormones like adrenaline and corticosteroids.