1. SCIENCE for KIDS

2. Reproductive System (Male) The male reproductive organs are the: 1.Testes 2. ducts 3. Accessory glands 4. Penis 3. Testes It makes the hormone Testosterone Testosterone is responsible for your secondary sexcharacteristics Here are some examples of secondary sexcharacteristics. Growing of hair in armpit and in genitals. Deepening of voice. Increase in height. 4. Ducts: How does sperm come outof the body? We have 2 ducts in the male reproductive system. Epididymis and the Vas deferens. Epydidymis is the temporary storage for sperm. And the vas deferens leads the sperm away to the body. 5. Penis The male reproductive organ. Consists of a spongy tissue that is full of tiny bloodvessels. The top of the penis is called glans The skin over the glans is called foreskin. The removal of the foreskin is called circumcision. 6. Did you know? That boys ejaculate semen when they are asleep? This process is called wet dreams. 7. Female reproductive system Ovary holds the egg cells and makes the hormonesEstrogen and Progesterone. Fallopian tube- provide a way for the egg to travel tothe uterus. How does the egg travel to the uterus? In the fallopian tube there are hair like projectioncalled cirea Uterus- hollow muscular organ where the fertilizedegg develops and grows. It is also known as WOMB. 8. HORMONES Estrogen- responsible for the secondary sexcharacteristics Progesterone- responsible for the thickening of thelining of uterus. 9. Menstrual Cycle Are your vagina bleeding and you think you are sick? Well it is just called menstruation. It is the flow ofblood which may last to three to five days. In a healthy female, menstruation occurs regularlyonce every 28 days. 10. How do we menstruate? A. new egg ripens and endometrium begins to thicken. B. Egg is released. C. Endometrium thickens further. D. Unfertilized egg passes through the uterus. E. Endometrium is shed. 11. RESPIRATORY SYSTEM 12. What does the RespiratorySystem do? The respiratory system helps us to breathe in oxygen and take out carbondioxide. 13. Lets take a journey to therespiratory system 14. NOSE 15. MOUTH 16. What does the nose and mouthdo? They breathe in air and take out air. 17. Epiglottis 18. Epiglottis stops food from going in to the trachea. 19. TRACHEA 20. It is a tube that connects the larynx to the lungs, allowing the passage ofair. 21. LUNGS 22. The lungs and respiratory system allow oxygen in the air to be taken intothe body, while also enabling the body to get rid of carbon dioxide in theair breathed out. 23. Diaphragm Biggest muscle of Body When you breathe in, the diaphragm moves downward ,causing lungs toexpand In exhalation, the diaphragm moves upward and causing lungs to contract. 24. Bronchioles The small airways of the lung extending from the bronchi to the alveoli. 25. Alveoli Every few seconds, with each inhalation, air fills a large portion of themillions of alveoli. Oxygen moves from the alveoli to the blood through the capillaries. Carbon dioxide, moves from cells into the capillaries 26. Excretory System 27. PARTS Kidneys Ureters Urinary Bladder Urethra 28. KIDNEYS They filter the body waste in form of urine. I can name two who filters the body waste. They are the Bowmans Capsule and Renal Artery. 29. URETER It brings urine to the urinary bladder. 30. URINARY BLADDER Holds urine. 31. Urethra Takes out the urine in the body. 32. DIGESTIVE SYSTEM Esophagus brings food to stomach Stomach digests food Small intestine digests food Large intestine where undigested food stays Rectum Pushes feces {POOP} to the anus Anus takes out feces to the body Liver produces bile Pancreas - X 33. Thank you !! For more visitwww.anatomyzoologyweatherscience.blogspot.com Thank you :D