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An Initiative by: Kausik Chakraborty.
03/12/2022 12:40 AM

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Objective Questions on Tughlaq Dynasty (तुगलक वंश)🟢Objective Questions On Bharat me Europeano Ka Aagman (भारत में यूरोपियनों का आगमन)🟢भारतीय संविधान के विकास का इतिहास🟢1873 का चार्टर एक्ट🟢साइमन कमीशन🟢Cabinet Mission(कैबिनेट मिशन), 1946🟢माउंटबेटन योजना(Mountbatten Plan)🟢Important Points about Constituent Assembly of India🟢Constituent Assembly MCQ (संविधान सभा का वस्तुनिष्ठ प्रश्न)🟢Preamble of Indian constitution MCQ (भारतीय संविधान की प्रस्तावना वस्तुनिष्ठ प्रश्न)🟢Sources of Indian Constitution🟢Objective questions on Source of Indian Constitution (भारतीय संविधान के स्रोत का वस्तुनिष्ठ प्रश्न)🟢Schedule of Indian Constitution(भारतीय संविधान की अनुसूची)🟢Schedule of Indian constitution questions (भारतीय संविधान की अनुसूची का प्रश्न)🟢भारतीय संविधान के भाग(Parts of Indian Constitution)🟢MCQ On Parts of Indian Constitution (भारतीय संविधान के भाग का वस्तुनिष्ठ प्रश्न)🟢MCQ on the union and its territory (संघ एवं उसका राज्यक्षेत्र का वस्तुनिष्ठ प्रश्न)🟢Important Points About Indian Citizenship(भारतीय नागरिकता)🟢Objective Questions Of Indian Citizenship (भारतीय नागरिकता का वस्तुनिष्ठ प्रश्न)🟢शोषण के विरुद्ध अधिकार(Right against exploitation)

“The Knowledge Library”

Knowledge for All, without Barriers…

 

An Initiative by: Kausik Chakraborty.
Objective Questions on Tughlaq Dynasty (तुगलक वंश)🟢Objective Questions On Bharat me Europeano Ka Aagman (भारत में यूरोपियनों का आगमन)🟢भारतीय संविधान के विकास का इतिहास🟢1873 का चार्टर एक्ट🟢साइमन कमीशन🟢Cabinet Mission(कैबिनेट मिशन), 1946🟢माउंटबेटन योजना(Mountbatten Plan)🟢Important Points about Constituent Assembly of India🟢Constituent Assembly MCQ (संविधान सभा का वस्तुनिष्ठ प्रश्न)🟢Preamble of Indian constitution MCQ (भारतीय संविधान की प्रस्तावना वस्तुनिष्ठ प्रश्न)🟢Sources of Indian Constitution🟢Objective questions on Source of Indian Constitution (भारतीय संविधान के स्रोत का वस्तुनिष्ठ प्रश्न)🟢Schedule of Indian Constitution(भारतीय संविधान की अनुसूची)🟢Schedule of Indian constitution questions (भारतीय संविधान की अनुसूची का प्रश्न)🟢भारतीय संविधान के भाग(Parts of Indian Constitution)🟢MCQ On Parts of Indian Constitution (भारतीय संविधान के भाग का वस्तुनिष्ठ प्रश्न)🟢MCQ on the union and its territory (संघ एवं उसका राज्यक्षेत्र का वस्तुनिष्ठ प्रश्न)🟢Important Points About Indian Citizenship(भारतीय नागरिकता)🟢Objective Questions Of Indian Citizenship (भारतीय नागरिकता का वस्तुनिष्ठ प्रश्न)🟢शोषण के विरुद्ध अधिकार(Right against exploitation)

“The Knowledge Library”

Knowledge for All, without Barriers……….
An Initiative by: Kausik Chakraborty.

The Knowledge Library

Adolescence

 

Introduction

  • The phase of life, when the body undergoes radical changes, leading to reproductive maturity, is known as adolescence.
  • Adolescence normally begins around the age of 11 and lasts up to 18 or 19 years of age. However, the phase of adolescence varies from person to person.
  • Starting from thirteen (13) to nineteen (19), ‘teen’ is a suffix and common in every number; therefore, adolescents are also known as ‘teenagers.’
  • In girls, the adolescence phase may begin one year or two years earlier than the boys.
  • During the adolescence phase, the human body undergoes several changes, which are marked as the onset of puberty.
  • The most important change, which marks puberty, is that the boys and the girls become capable of reproduction.
  • Puberty, however, ends when an adolescent phase attains reproductive maturity.

Changes at Puberty

  • The most conspicuous change during puberty is the swift increase in height.
  • In the beginning, girls grow faster than boys, but by reaching 18 years of age, both attain their maximum height.
  • The rate of body growth (in terms of height) varies from person to person.
  • The changes occurring in adolescent boys and girls are also much different.
  • At puberty, especially the boys’ voice boxes or the larynxes begin to grow and develop larger voice boxes.
  • The growing larynxes in boys can be seen as a protruding part of the throat; it is known as Adam’s apple.
  • In girls, the larynx is small; hence, it is not visible from the outside.
  • Adolescence is also the phase of change in a person’s way of thinking.
  • Hormones, which are chemical substances, are responsible for the changes in adolescence.
  • The testes (in boys), at the onset of puberty, release the testosterone hormone.
  • Once puberty is reached in girls, ovaries begin to produce the hormone namely estrogen; it is responsible for the breast’s development.
  • Endocrine glands release hormones directly into the bloodstream.
  • In the body, there are many endocrine glands or ductless glands.
  • Sex hormones are under the control of hormones released by the pituitary gland.

Reproductive Phase of Life in Humans

  • At puberty, the released egg (in women), and the thickened lining of the uterus along with its blood vessels get shed off in the form of bleeding known as menstruation.
  • The first menstrual flow begins at puberty and is known as menarche.
  • Menstruation occurs once in about 28 to 30 days.
  • By the age of 45 to 50 years, the menstrual cycle stops, which is known as menopause.
  • The thread-like structures in the fertilized egg are known as chromosomes.
  • All human beings have 23 pairs or 46 chromosomes in the nuclei of their cells.
  • In boys, out of 23 pairs of chromosomes, two chromosomes named X and Y are the sex chromosomes.
  • In girls, out of 23 pairs of chromosomes, two chromosomes named X and X are the sex chromosomes.
  • When a sperm carrying X chromosome fertilizes with the egg, the zygote would have two X chromosomes that develop into a female child.
  • When a sperm carrying Y chromosome fertilizes with the egg, the zygote would have two chromosomes i.e. X and Y and such zygote develops into a male child

 

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