When a human female reaches a certain age then vaginal bleeding occurs for a few days after regular time intervals.(a) What is this process known as (i) in scientific terms, and (ii) in everyday language?
(b)At what approximate age this process starts in human females? What is the human female said to have attained at this stage?
(c) After how much time is this process repeated? For how many days this process usually lasts?
(d) What does the onset of this process in human females signify?
(e) At which particular event in the life of a human female this process stops temporarily but starts again?
(f) At which approximate age of human female this process stops permanently?
(a) The process where a human female reaches a certain age then vaginal bleeding occurs for a few days after regular time intervals known as (i) menstruation in scientific terms, and (ii) periods in everyday language.
(b) In human females, the approximate age for a girl to undergo her first period is approximately 10 to 12 years. The human female is said to have attained puberty or sexual maturity at this age.
(c) This process of menstruation is repeated every 28 days and lasts for 3 to 5 days.
(d) The onset of the menstruation process signifies sexual maturity in females.
(e) During pregnancy, the menstruation process stops temporarily but starts again.
(f) In the human female, at the age of 45 to 50, the menstruation process stops permanently.
Related Articles
- What is the name of the process in which thickened uterus lining along with blood vessels is removed from the body of a human female through vaginal bleeding?
- (a) What changes are seen in girls at the time of puberty?(b) Name the organs that produce ova (or egg cells) in human females. (c) Draw a labeled diagram of the human female reproductive system. With the help of this diagram, explain the working of the human reproductive system. (d) Describe the process of fertilization in humans and the development of embryos briefly.
- (a) What is puberty? Who attains puberty at an earlier age in human beings: male or female (boy or girl)?(b) Mention two functions each of (i) human testes, and (ii) human ovaries?
- (a) For how much time does menstruation last in human females(or women)?(b) What is the frequency of menstrual cycle in human females(or women)?
- The normal human body temperature is 98.6°F. What is this temperature in °C?
- Describe how coal was formed. What is this process called?
- Describe the process of fertilization in human beings.
- (a) What is thermit process? Where is this process used? Write a balanced chemical equation for the reaction involved.(b) Where does the metal aluminium, used in the process, occurs in the reactivity series of metals?(c) Name the substances that are getting oxidised and reduced in the process.
- Describe how coal is formed from dead vegetation .What is this process called
- When a female child is born, her ovaries already contain thousands of immature eggs (or ova) contained in immature structures A. On maturing, A bursts open and an egg shoots out of the ovary in a process called B. The process B starts in the females at puberty and occurs again and again after a time period x. Before every occurrence of process B, the inner lining of uterus becomes thick and soft with lots of blood vessels in it. When the egg cells gets fertilised by a sperm, then an event C occurs in the life of mature human female which lasts for time period y leading to the birth of baby. If, however, the egg cell released by the ovary does not get a sperm to fuse with, then the thick and soft inner lining of uterus breaks down and comes out of the female's body in an event called D. The occurrence of event D is controlled by chemical substances E.(a) What are A? (b) What is process B? (c) What is the time period x? (d) Name the event C. (e) How much is the time period y? (f) What is the name of process D? (g) Name the chemical substances E.
- A given length of a wire is doubled of itself and this process is repeated once again. By what factor does the resistance of the wire changes?
- Does Respiration Process Take Place in Each Cell of the Human Body?
- A glass rod is rubbed against a silk cloth. Which object get charged in this process?
- When water is heated to a temperature x, it gets converted into steam at temperature x by a process called R. And when steam at temperature x is cooled, it gets reconverted into water at the same temperature x by a process called S.(a) How much is the value of x in Kelvin?(b) What is the process R called?(c) What is the name of the energy absorbed during the process R?(d) What is process S known as?(e) What is the name of energy released during the process S known as?
- Write the functions of each of the following parts in a human female reproductive system: OvaryUterusFallopian tubeWrite the structure and functions of placenta in a human female.
Kickstart Your Career
Get certified by completing the course
Get Started
Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies