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प्रश्न
In what ways are puberty and adolescence result of the activity of some glands in the human body?
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उत्तर
Puberty and adolescence are results of the activities of testosterone in males and oestrogen in females. In males during puberty, testosterone secretion is increased resulting in the development of male sex organs and male characters such as deeper voice, moustache, beard and more body hair.
Similarly, in females, oestrogen secretion is increased at the time of puberty resulting in the development of female sex organs and female characters such as feminine voice, soft skin and mammary glands.
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संबंधित प्रश्न
Why is the use of iodised salt advisable?
Name the hormones secreted by the given endocrine glands and specify one function.
Thyroid
Name the disease caused by the deficiency of thyroxine hormone in the body.
Which halogen element is necessary for the making of thyroxine hormone by the thyroid gland?
Name one gland which acts only as an endocrine gland.
If sugar is detected in the urine of a person, name the disease he is suffering from.
Why do you need iodine in your diet?
Name the hormones secreted by given endocrine glands:
Adrenal glands
How does chemical coordination take place in human beings?
State the functions of Thyroxine hormones.
State the functions of Growth hormone.
odine is necessary for the synthesis of which of the following hormone?
(a) adrenaline
(b) auxin
(c) thyroxine
(d) insulin
Which of the following hormone prepares our body for action in emergency situations?
(a) testosterone
(b) growth hormone
(c) adrenaline
(d) insulin
The gland X which is located just below the brain in the human head secretes a chemical substance Y which controls the development of ones and muscles in the body of a person. Secretion of too little of substance Y as well as the secretion of too much of substance Y by the gland X leads to abnormal development of the body of a person.
(a) Name the gland X.
(b) What is the chemical substance Y?
(c) What happens if too little of substance Y is secreted?
(d) What happens if too much of substance Y is secreted?
(e) Name the system of glands in the human body of which gland X is a part.
The pancreas is made up of two parts A and B. The part A secretes insulin whereas part B secretes pancreatic juice.
(a) Which part is functioning as an endocrine gland? Why?
(b) What is insulin and what effect does it have in the body?
(c) Name the disease which can be treated by giving insulin injection.
(d) What does pancreatic juice contain? Where does pancreatic juice go?
(e) Name the life process in which pancreatic juice is made use of.
A squirrel is in a scary situation. Its body has to prepare for either fighting or running away. State the immediate changes that take place in its body so that the squirrel is able to either fight or run?
Assertion: On attaining puberty, breast size increases and reproductive organs develop in females.
Reason: Ovaries release the hormone progesterone in females.
Name the gland and the hormone secreted by it in scary situations in human beings. List any two responses shown by our body when this hormone is secreted into the blood.
