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Physical and psychological problems, as well as dependency, can occur. Drugs can have both short and long-term consequences. Why are drugs harmful for the human body?Īns: The effects of drugs can differ from one person to the next. Males have one X and one Y chromosome, while females have two X chromosomes.Ģ2. The sex chromosomes, X and Y, are two of these chromosomes. In the nucleus of all human cells, there are 23 pairs of chromosomes. Menopause could hit in the forties or fifties.Ĭontrol overall metabolic rate of the bodyĪns: A sex hormone is a chemical substance produced by a sex gland or other organ that affects an organism's sexual characteristics. Menopause: Menopause is the term used to describe the end of a woman's menstrual cycle. Menarche: The first menstrual cycle in a female adolescent is known as menarche.Ĭ. Menstrual blood is a mixture of blood and tissue from the uterus.ī. The uterus or womb removes its lining if no pregnancy develops. Your body prepares for pregnancy every month. Menstruation: Normal vaginal bleeding that happens as part of a woman's monthly cycle is known as menstruation, or period. The reproductive phase of males begins in puberty at the age of 11 to 13 years and lasts a lifetime.Ī. The reproductive period of females begins in puberty at the age of 10 to 12 years and lasts until about 45 to 50 years of age. Males have a substantially longer capability for maturation and the creation of gametes than females. Write a short note on the reproduction phase in humans.Īns: When adolescent’s testes and ovaries begin to create gametes in males and females respectively, they are able to reproduce. Some of the hormones secreted by pituitary gland are as follows:Īns: Endocrine glands secrete hormones into the bloodstream in order for them to reach a specific body part known as a target site. Target sites respond to hormones in various ways.ġ8. What is pituitary gland? Name the hormones secreted by it?Īns: The pituitary gland is an endocrine gland that regulates the activity of all other glands in the body. Which hormones help in the development of secondary sexual characters?Īns: In males and females, testosterone and estrogens respectively aid in the development of secondary sexual characteristics.ġ6. For example, boy’s moustaches and beards, and development of breasts in females.ġ5. What are secondary sexual characters?Īns: Secondary sexual traits are characteristics that help distinguish a man from a woman.
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Adolescence begins around the age of eleven and lasts until the age of eighteen or nineteen.ġ4. This is referred to as Adam's apple.Īns: Hormones are chemical substances produced by the endocrine glands.Īns: Adolescence is the stage of life when the body experiences changes that lead to reproductive maturity. With most children it occurs generally around 10-12 years of age.Īns: At puberty, a bigger voice box develops in boys, which can be seen as a projecting region of the throat. Which one of the following regulates the growth of an individual?Īns: The process by which a child's body evolves into an adult body and achieves sexual maturity is known as puberty. Adolescents should be totally away from _.ĩ.
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The physical and mental well-being of an individual is called an individual’s _.ħ. Bleeding in women in about 28 to 30 days is called the _ phase.ĥ. There are _ pairs of chromosomes in human cells.Ĥ. The period of maturity of reproductive organs is called _.ģ. We also provide students with around the clock query resolution services.ġ. These online live classes are great for students who want to learn new topics and chapters. Maths Students who are looking for the better solutions ,they can download Class 8 Maths NCERT Solutions to help you to revise complete syllabus and score more marks in your examinations.Īt Vedantu, we also provide students with other academic services like online live classes. Vedantu is a platform that provides free CBSE Solutions (NCERT) and other study materials for students.
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