Answer :
1. Adrenal gland:
This structure secretes adrenaline, noradrenaline, cortisol, and aldosterone.
The adrenal gland is located above each kidney. It has two parts:
Adrenal Cortex - secretes cortisol and aldosterone.
Adrenal Medulla - secretes adrenaline and noradrenaline.
2. Pineal gland/Pineal body:
This structure regulates the sleep cycle and other biological rhythms.
The pineal gland is located in the middle of the brain. It secretes the hormone melatonin, which regulates the wake and sleep cycle.
3. Thyroid gland:
This structure is located at the throat and regulates metabolism.
The thyroid gland is found in the neck. It produces thyroid hormones that regulate metabolism. It also helps maintain blood pressure, heart rate, digestion, muscle tone and other reproductive functions.
4. Pancreas:
This structure secretes glucagon and insulin.
The pancreas is located in the abdominal cavity, behind the lower part of the stomach. It secretes glucagon and insulin to regulate the glucose level in the blood.
5. Thymus gland
This structure regulates the development and differentiation of T lymphocytes.
The thymus gland can be found in the thoracic cavity, in the mediastinum to be exact. T-lymphocytes are produced in the bone marrow, but they develop in the thymus.
6. Parathyroid glands
This structure regulates blood calcium levels.
They come in two pairs and are embedded on they thyroid gland. It releases parathyroid hormone. This hormone helps regulate the calcium levels in the blood.
The endocrine system includes the glands and releases the chemical called hormones through them. The hormones adrenaline, noradrenaline, cortisol, and aldosterone are released by the Adrenal gland.
What is the endocrine system?
The complete question is attached to the image below.
The endocrine system is the glands that are responsible to produce and secrete the hormones that are chemical messengers to different body parts to aid in the function.
The adrenal gland is the part of the endocrine system that is present above the kidney and produces hormones like adrenaline, aldosterone, etc.
The sleep cycle and the biological rhythm of the body are regulated by the pineal gland with the help of the melatonin hormone.
The thyroid gland is located at the throat and is involved in the regulation of the metabolism, body growth, fertility, and development of the nervous system. The parathyroid gland regulates the calcium levels in the blood.
Pancrease is involved in the secretion of glucagon and insulin the most essential hormones that regulate the blood sugar level. The regulation and development of the T lymphocytes is maintained by the thymus gland involved in the immune system.
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