[ Gland[ Gland ] An organ that synthesises and secretes substances. Organs that secrete substances (such as hormones) into the blood are endocrine glands. Those that secrete substances outside the blood (such as milk or sweat) are exocrine glands.... More ]
An organ[ Organ ] A collection of tissue that has a specific biological function, such as the liver or kidneys.... More that synthesises and secretes substances.
Organs that secrete substances (such as hormones[ hormone ] A substance that acts as a signal between organs and tissue to regulate physiology and behaviour. Hormones are secreted directly into the circulatory system by specialised cells in glands and other organs. They regulate metabolic activities, growth and tissue repair, sexual function, sleep and emotions, to name a few. Hormones are either Amino acid–based (amines and peptide... More) into the blood are endocrine[ Endocrine System ] A collection of glands and organs that secrete hormones into the circulatory system. Those hormones act as regulatory signals.... More glands[ Gland ] An organ that synthesises and secretes substances. Organs that secrete substances (such as hormones) into the blood are endocrine glands. Those that secrete substances outside the blood (such as milk or sweat) are exocrine glands.... More. Those that secrete substances outside the blood (such as milk or sweat) are exocrine glands[ Gland ] An organ that synthesises and secretes substances. Organs that secrete substances (such as hormones) into the blood are endocrine glands. Those that secrete substances outside the blood (such as milk or sweat) are exocrine glands.... More.