Question

Endocrine glands secrete their secretions in -
(a)Blood
(b)Lymph
(c)Urine
(d)Endometrium

Answer 1

Hint Endocrine glands are a part of the endocrine system that secrete hormones that are responsible for regulating vital processes in different parts of the body. Hence they need to be transported through a medium that can reach every corner of the body.

Complete answer: - Endocrine glands are a part of the endocrine system. These glands are present in different parts of the body and are responsible for secreting hormones, which are molecules secreted in very small amounts that control and regulate physiological processes.
- The hormones are directly secreted in the circulatory system, the blood, to get transported to distant organs.
- The endocrine glands in our body are the pancreas, adrenal glands, pineal glands, thyroid, and parathyroid glands, ovaries, testes, hypothalamus, and pituitary glands.

Additional information: - Hormones are transported through the blood and bind to receptors on the target cells to elicit a characteristic response.
- The hormones are highly necessary for maintaining homeostasis in the body.
- Important hormones in the human body are insulin, glucagon, thyroxine (T4), estrogen, progesterone, testosterone, and so on.
- The endocrine system carries out one method of intercellular communication, the chemical signaling. Meanwhile, the nervous system uses two types of intercellular communication—electrical and chemical signaling.

So, the correct answer is ‘Blood’.

Note: - The endocrine system coordinates with the nervous system to control the functions of the other organ systems in the body. The hypothalamus is the neural control center for all endocrine systems in vertebrates.
- The hypothalamus and pituitary gland are neuroendocrine organs, as they have both neural and endocrine functions.