M2 Revision S2Q4

Health and Fitness 1. Fill in the blanks with the appropriate terms Physical activity is important for developing musclestrength and bone health. However, most adolescence remain sedentary, which means to remain inactive for long periods of time. Experts recommend at least 60 minutes of moderate intensity physical activity daily. Examples of moderate intensityphysical activities are running , cycling, football and badminton. 2. The picture below shows an example of antagonistic muscles in action. Describethe changes that take place in the form of the muscles and how the triceps and biceps work together to enable the arm to function . 3. Listthe functions of the skeletal and the muscular system in the table below. Then outline ways to ensure good skeletal and muscular health. System Function Ways to ensure good health Skeletal System Protection, Support and structure, production of blood cells, movement Consuming food rich in calcium, taking part in activities to increase bone strength Muscular System Enable movement, maintain posture. Taking part in activities to increase muscle strength, stretching before exercise, healthy diet 4. What does heart rate mean? number of heart beats in an hour number of heart beats in a minute number of heart beats in a second number of heart beats in a day Reproduction 5. Label the parts of the female reproductive system on the image shown below fallopian tube ovary cervix vagina 6. Now outline the functions of the parts of the female reproductive system on the image shown below places where fertilisation takes place produce egg cells directs sperm into uterus during sexual intercourse, dialtes during birth receives penis during intercourse, place where baby passes through during birth 7. Label the parts of the male reproductive system on the image shown below Prostrate gland Sperm duct testis Scrotum Penis Urethra 8. Now outline the functions of the parts of the male reproductive system on the image shown below nourishes sperm Carries sperm from testis to penis produces sperm holds testis carries sperm out of the body carries urine from bladder to outside of the body 9. Select the right terms to fill in the blanks The female sex cells are the egg cells/ ovum. Eggs are released from the fallopian tube once every 28 days. They are wafted down the ovaryby cilia (hairs). The uterusis where a fertilised egg can grow into a baby. It has strong muscularwalls and a soft lining. The uterusholds the baby in place during pregnancy. The cervix opens into the vagina. 10. The image below shows the process of fertilisation. Describethe sperm's journey from the vagina all the way to the fallopian tube where fertilisation takes place 11. Answer the following questions based on the image on menstrual cycle.a) Outline what happens during menstruationb) Outline what happens during ovulationc) A gynecologist top advices to conceive areRecord menstrual cycle frequencyMonitor ovulation Apply your knowledge on the menstrual cycle to explain why is it important to monitor evaluation, in order for a woman to get pregnant? 12. Describe the changes that happen to the cervix and the uterine walls based on the image above. Include details on how these changes make it possible for birth to happen successfully. 13. Match the correct descriptions to the groups as below Amniotic Fluid Acts as shock absorber to prevent fetus from bumps or other mechanical damage during fetus movement in the uterus Placenta Gives food and removes waster Exchanges oxygen and carbon dioxide between fetus and mother Umbilical Cord Connects fetus to placenta Contains veins and arteries to transport nutrients and wastes Inheritance 14. Match the terms with the correct descriptions. Chromosomes Made up of condensed DNA and contains genes DNA A double helix structure which is the hereditary material for most organisms Genes Basic unit of heredity which carries information that determines traits 15. The image below shows the number of chromosomes in human. Image 4.1 Chromosome number in humana) Analyse the image to interpret information on the number of chromosomes in human Image 4.2 Chromosome number for Klinefelter syndrome15 b) How does image 4.2 differ from image 4.1? Analyseandinterpretwith sufficient details by referring to the number of chromosomes. Image 4.3 Chromosome number for Down syndrome15 c) How does image 4.3 differ from image 4.1? Analyse and interpret with sufficient details by referring to the number of chromosomes.