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Human Growth and Development 5th Grade Science
Definition of Human Reproduction <ul><li>The process by which human beings are made </li></ul>
Structure and Function <ul><li>Pituitary Gland </li></ul><ul><ul><li>Located: base of brain </li></ul></ul><ul><ul><li>Cal...
Structure and Function <ul><li>Body Changes </li></ul><ul><ul><li>During  adolescence , hormones produced by the pituitary...
Structure and Function <ul><li>Body Changes Continued </li></ul><ul><ul><li>Adolescence  begins between the age of  9-14  ...
Reproductive System <ul><li>The anatomy and physiology of the male and female reproductive systems are different, but comp...
Male Reproductive System <ul><li>Scrotum:  holds testes </li></ul><ul><li>Testes:  produce and store sperm.  </li></ul><ul...
Male Reproductive System <ul><li>Scrotum:  a loose sac that holds the testes outside the body. The  scrotum  allows the  t...
Male Reproductive System <ul><li>Testes:  Two testes or testicles (located in the scrotum) produce and store the sperm and...
Male Reproductive System <ul><li>Penis:  External organ that is necessary for intercourse and urination. It consists of fi...
Male Reproductive System <ul><li>Vas Deferens:  The long tube that carries the sperm from the testes to the urethra. </li>...
Female Reproductive System <ul><li>Ovaries : store eggs </li></ul><ul><li>Fallopian Tubes :a tube where the egg travels th...
Female Reproductive System <ul><li>Ovaries:  Two small glands, each about the size of an almond, where the egg cells matur...
Female Reproductive System <ul><li>Fallopian Tubes : When the mature egg leaves the  ovary , it travels through the tube t...
Female Reproductive System <ul><li>Uterus or Womb : The place where the fertilized egg develops and grows for nine months....
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Humangrowth

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Health Unit 5th grade-Human Growth and Development

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Transcript of "Humangrowth"

  1. 1. Human Growth and Development 5th Grade Science
  2. 2. Definition of Human Reproduction <ul><li>The process by which human beings are made </li></ul>
  3. 3. Structure and Function <ul><li>Pituitary Gland </li></ul><ul><ul><li>Located: base of brain </li></ul></ul><ul><ul><li>Called: “Master Gland” </li></ul></ul><ul><ul><ul><li>Controls the growth patterns of the body </li></ul></ul></ul>
  4. 4. Structure and Function <ul><li>Body Changes </li></ul><ul><ul><li>During adolescence , hormones produced by the pituitary stimulate changes in the reproductive organs. </li></ul></ul><ul><ul><li>Hormones cause quick changes: physically, emotionally, and psychologically </li></ul></ul><ul><ul><li>Growth and development of the body vary from individual to individual . Girls usually mature before boys. </li></ul></ul>
  5. 5. Structure and Function <ul><li>Body Changes Continued </li></ul><ul><ul><li>Adolescence begins between the age of 9-14 years. Ask your parents when they changed and you will change around that same age. </li></ul></ul><ul><ul><li>This stage is called puberty. During puberty, your body’s sex organs develop. At this time, it is physically possible to reproduce and secondary sex characteristics begin to appear. </li></ul></ul>
  6. 6. Reproductive System <ul><li>The anatomy and physiology of the male and female reproductive systems are different, but compliment each other to make reproduction possible. </li></ul><ul><li>Adolescence - hormones cause the egg and sperm cells to mature. Then, reproduction is made possible. </li></ul>
  7. 7. Male Reproductive System <ul><li>Scrotum: holds testes </li></ul><ul><li>Testes: produce and store sperm. </li></ul><ul><li>Penis: needed for intercourse and urination </li></ul><ul><li>Urethra: carries urine and sperm to the outside of the body </li></ul><ul><li>Vas Deferens : carries sperm from the testes to the urethra </li></ul><ul><li>Seminal vesicles and prostate gland : produce semen </li></ul>
  8. 8. Male Reproductive System <ul><li>Scrotum: a loose sac that holds the testes outside the body. The scrotum allows the testes to maintain a temperature two or three degrees below body temperature. It does this by pulling the testes closer to the body in cold conditions and relaxing to let them hang farther from the body in warm conditions. This temperature maintenance is related to sperm production. </li></ul>
  9. 9. Male Reproductive System <ul><li>Testes: Two testes or testicles (located in the scrotum) produce and store the sperm and are each about the size of a walnut. The mature sperm are continuously being produced by the testes from puberty to well into old age. Hormones from the pituitary stimulate the sperm production. The mature sperm are released during sexual intercourse or they disintegrate. </li></ul>
  10. 10. Male Reproductive System <ul><li>Penis: External organ that is necessary for intercourse and urination. It consists of fine, spongy material and the urethra. </li></ul><ul><li>Urethra : The tube inside the penis that carries both urine and sperm to the outside of the body, but never at the same time. A valve prevents urine and sperm from being in the urethra at the same time. </li></ul>
  11. 11. Male Reproductive System <ul><li>Vas Deferens: The long tube that carries the sperm from the testes to the urethra. </li></ul><ul><li>Seminal Vesicles and Prostate Gland : Are two glands that produce semen, the thick, white fluid in which the sperm float. </li></ul>
  12. 12. Female Reproductive System <ul><li>Ovaries : store eggs </li></ul><ul><li>Fallopian Tubes :a tube where the egg travels through to the uterus </li></ul><ul><li>Uterus or Womb: fertilized egg develops </li></ul><ul><li>Cervix : protects the unborn child from the outside </li></ul><ul><li>Vagina : sperm is deposited here </li></ul>
  13. 13. Female Reproductive System <ul><li>Ovaries: Two small glands, each about the size of an almond, where the egg cells mature. Hormones from the pituitary stimulate the eggs to mature. The ovaries contain 300-400,000 eggs from the time of birth. These eggs ripen at the rate of about one per month with the start of menstruation . </li></ul>
  14. 14. Female Reproductive System <ul><li>Fallopian Tubes : When the mature egg leaves the ovary , it travels through the tube to the uterus . The tubes or oviducts are three to five inches long. It takes the egg three to six days to travel through the tubes to the uterus. During this time, if the sperm meets the egg and penetrates it, fertilization takes place and pregnancy begins. If fertilization does not take place, the egg leaves the body through the uterus and vagina . </li></ul>
  15. 15. Female Reproductive System <ul><li>Uterus or Womb : The place where the fertilized egg develops and grows for nine months. </li></ul><ul><li>Cervix: Is the neck of the uterus . It closes off the uterus to protect the unborn child from the outside. </li></ul><ul><li>Vagina : Is where the sperm is deposited during intercourse. It is also the birth canal. (Sperm must swim up to the Fallopian tube to meet the egg.) </li></ul>
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