Endocrine System
Endocrine System
Endocrine system: The endocrine system consists of a collection of bag-like structures called glands. These glands are located at specific places inside our bodies and release chemical substances called hormones. The major glands that make up the human endocrine system are pituitary, thyroid, adrenals, pancreas, ovaries, and testes. A diagrammatic representation of the human endocrine system is shown.
1. Pituitary gland
Location: base of the brain
Hormones secreted: 1. Thyroid stimulating hormone (TSH), 2. Growth hormone (GH)
Hormone action : TSH : Its principal function is to monitor and regulate the activity of other glands.
GH : GH stimulate linear growth in children and helps to maintain bone and other tissues in adult.
2. Pineal gland :
Location : Deep in the brain
Hormone secreted : melatonin and serotonin
Hormone action : Melatonin hormones regulate night and day cycles or sleep-wake cycles.
Serotonin stabilizes our mood, feelings of well-being, and happiness.
3. Thyroid gland
Location: Base of the throat
Hormones secreted: Thyroxine
Hormone action : Thyroxine plays a crucial role in heart and digestive function, metabolism, brain development, bone health and muscle control.
4. Thymus gland
Location : Beneath the breastbone at the level of the heart
Hormone secreted : Thymosin hormone
Hormone action : Produce and process T lymphocytes.
5. Adrenal gland
Location: Near the kidneys
Hormones secreted: Adrenaline
Hormone action : Adrenaline is often known as the fight or flight hormone because it prepares the body to act, especially when the body encounters stress.
6. Pancreas
Location: Near the liver
Hormones secreted: insulin, glucagon
Hormone action : Insulin acts to lower blood sugar, and glucagon, which acts to raise blood sugar.
7. Testis: (In males: two in number)
Location: Male genital organs
Hormones secreted: Testosterone
Hormone action : Testosterone controls the development of secondary sexual characters in males such as facial hair, beard, moustaches etc. It stimulates spermatogenesis (formation of sperm).
8. Ovaries (in female; two in number)
Location : Pelvic region
Hormones secreted: Estrogen and progesterone
Hormone action : Estrogen stimulates the growth and development of female secondary sex organs and female secondary sexual characters (such as development of breasts). Progesterone play an important role in regulation of menstrual cycle and pregnancy.
Question: Why pituitary gland is also called as master gland of the endocrine system?
Solution : Pituitary gland is also called as master gland of the endocrine system because:
(i) The hormones it secretes play an active part in controlling the functions of other endocrine glands.
(ii) Its job is to receive messages about the need for a particular hormone and to secrete the hormones that cause the manufacture and release of the hormones.
Which of the following is not a gland ? | |||
| Right Option : D | |||
| View Explanation | |||
Which of the following is correct among the following : (a) Pituitary gland is located at the base of the brain. (b) Thyroid gland secrete serotonin hormone. (c) Adrenal gland present near kidneys. (d) Testes present in male and females. | |||
| Right Option : D | |||
| View Explanation | |||
Students / Parents Reviews [10]
My experience with Abhyas academy is very good. I did not think that my every subject coming here will be so strong. The main thing is that the online tests had made me learn here more things.
Hiya Gupta
8thAbout Abhyas metholodology the teachers are very nice and hardworking toward students.The Centre Head Mrs Anu Sethi is also a brilliant teacher.Abhyas has taught me how to overcome problems and has always taken my doubts and suppoeted me.
Shreya Shrivastava
8thMy experience was very good with Abhyas academy. I am studying here from 6th class and I am satisfied by its results in my life. I improved a lot here ahead of school syllabus.
Ayan Ghosh
8thAbhyas Methodology is very good. It is based on according to student and each child manages accordingly to its properly. Methodology has improved the abilities of students to shine them in future.
Manish Kumar
10thIt has a great methodology. Students here can get analysis to their test quickly.We can learn easily through PPTs and the testing methods are good. We know that where we have to practice
Barkha Arora
10thIt was good as the experience because as we had come here we had been improved in a such envirnment created here.Extra is taught which is beneficial for future.
Eshan Arora
8thA marvelous experience with Abhyas. I am glad to share that my ward has achieved more than enough at the Ambala ABHYAS centre. Years have passed on and more and more he has gained. May the centre flourish and develop day by day by the grace of God.
Archit Segal
7thAbhyas is a complete education Institute. Here extreme care is taken by teacher with the help of regular exam. Extra classes also conducted by the institute, if the student is weak.
Om Umang
10thI have spent a wonderful time in Abhyas academy. It has made my reasoning more apt, English more stronger and Maths an interesting subject for me. It has given me a habbit of self studying
Yatharthi Sharma
10thMy experience with Abhyas is very good. I have learnt many things here like vedic maths and reasoning also. Teachers here first take our doubts and then there are assignments to verify our weak points.
