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Natural sciences

Grade 9

Life processes: healthy life

Module 8

Family planning and vevereal diseases

Venereal disease:

  • As sex involves close contact between two persons, infectious diseases are transferred very easily. VENEREAL DISEASE is transferred through SEXUAL CONTACT .

Venereal diseases have different symptoms:

AIDS

  • The immune system is under attack

The infected person develops illnesses such as cancer, pneumonia and fungal infections and has no defense against them

GONORRHOEA

  • Babies are born blind
  • Burning sensation when urinating

Painful wrists

SYPHILIS

  • Sores on genital organs
  • Skin rashes

Bacteria could attack the brain and cause blindness and mental disease

  • QUESTIONS ABOUT VENEREAL DISEASES:

1. Which of the above diseases can be treated successfully? How?

2. What is the difference between “HIV-positive” and “AIDS”?

3. How could a person who is HIV-positive extend his or her life expectancy?

4. What is NEVIRAPINE and for what is it prescribed?

Assessment: Questions on VENEREAL DISEASES

Were you able to answer the questions successfully?

LO 2.3

Family planning and contraception:

Couples nowadays have various reasons for wanting to limit the size of their families to fewer or no children and the prevention of pregnancy has become an important issue for them.

Family planning concerns a couple’s planning for pregnancies, usually with the idea of providing financial security for their children.

Many couples, however, simply want to prevent pregnancy altogether and therefore make use of the same METHODS OF contraceptiON .

Methods of contraception:

  • There are NATURAL and ARTIFICIAL MEANS of contraception:

Natural:

  • ABSTINENCE – no sexual intercourse. The popularity of this method by young people is increasing. It is one of a few methods that prevent pregnancy completely (100%) and also prevents sexual diseases.
  • The rhythm method – During ovulation the body temperature increases. By keeping a record of body temperature, a woman can know when she is ovulating. This information can help couples to avoid, or achieve, pregnancy.

Artificial methods:

CONDOM: a rubber sheath placed over the penis

DIAPHRAGM: a rubber shield that is inserted by a woman before intercourse

IUD (intra-uterine device). A device that is inserted into the uterus by a doctor, and which remains in place for months

CONTRACEPTIVE PILLS: “The Pill”

STERILISATION:Tubes are bound or severed

Class activity: discussion on contraception

1. Why should people use family planning? List three reasons.

2. Explain why the rhythm method is not very dependable as a method of contraception.

3. Why is abstinence gaining popularity as a method of contraception?

4. Explain why none of the artificial methods can be regarded as 100% reliable.

5. Explain what each of the following is:

a) a VASECTOMY

b) a HYSTERECTOMY

c) SPERMICIDAL CREAM

6. When you marry, how many children would you like to have, and why?

7. What do you think of ABORTION? Remember that all of us are entitled to our own opinions!

Assessment: CLASS DISCUSSION

Are you able to detect the connection between science and the society in which you live?

SO 3.1

Assessment

Learning Outcomes 2 : Constructing Science Knowledge

The learner will know and be able to interpret and apply scientific, technological and environmental knowledge.

We know this when the learner:

2.3 interprets information

Learning Outcomes 3: Science, society and environment

The learner will be able to demonstrate an understanding of the interrelationships between science and technology, society and the environment.

We know this when the learner:

3.1 understands science as a human endeavour.

Memorandum

QUESTIONS ABOUT VENEREAL DISEASES:

1. bacterial infections can be treated with antibiotics

2. HIV+ means that a person has been infected with the virus; AIDS is the full-blown disease

3. A healthy lifestyle, exercise, plenty of fresh vegetables and fruit, medication that suppresses the virus infection

4. Prevents mother to child transmission of the virus at and after birth

CLASS ACTIVITY: DISCUSSION ON CONTRACEPTION

1. Quality of life, financial security, costs of living, education

2. cycles may vary – not reliable

3. the only method with real guarantees; return to stronger moral values because of fears related to HIV and other factors

4. All are fallible because of the human aspect.

5. a) severing of sperm tubes of the male – sterilisation

b) removal of the uterus of the female – sterilisation

c) medicinal cream that is usually applied together with other products for contraception

6 and 7 own opinion

Questions & Answers

where we get a research paper on Nano chemistry....?
Maira Reply
what are the products of Nano chemistry?
Maira Reply
There are lots of products of nano chemistry... Like nano coatings.....carbon fiber.. And lots of others..
learn
Even nanotechnology is pretty much all about chemistry... Its the chemistry on quantum or atomic level
learn
Google
da
no nanotechnology is also a part of physics and maths it requires angle formulas and some pressure regarding concepts
Bhagvanji
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
revolt
da
Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
Jyoti Reply
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
Nasa has use it in the 60's, copper as water purification in the moon travel.
Alexandre
nanocopper obvius
Alexandre
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
Any one who tell me about Preparation and application of Nanomaterial for drug Delivery
Hafiz
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Natural sciences grade 9. OpenStax CNX. Sep 15, 2009 Download for free at http://cnx.org/content/col11069/1.1
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