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Bio 111: Reproductiv
| Question | Answer |
|---|---|
| What is the difference between mitosis and meiosis? | Mitosis is when one cell splits into two daughter cells. Meosis is when the cell gives rise to 4 gametes with half the number of cells of the original cell. |
| How many cells does mitosis have? Meosis? | Mitosis has 46 chromosomes, 23 pairs/ Meosis has 46 chromosomes during the first meosis and has 23 durings the 2nd meiosis. |
| What does an acrosome do? | helps digest and break egg. |
| Semen? | Contains lots of sugar so the mitochondria have lots of glucose to generate energy for movement. |
| What do accessory glands do? | Allow the sperm to survive. |
| What are the accessory glands? | Prostate or in women the skene's gland. I helps promote survival of sperm. Bulbourethral- Cleans the urethra so semen primarily comes out. |
| What does an enlarged prostate do? | Pinches off the urethra because the prostate surrounds it, so men can't void. |
| What is the corpora cavernos? | Clioris of he penis. Lots of blood vessels and with stimulation it fills with blood and gets erect. |
| What pushes semen out? | The urinary sphincter must close first and then peristaltic contractions push the semen out. |
| What are the ovaries? | Located in abdominal cavity connected to uterus. They allow the egg to mature and then is sucked into fallopian tubes. They secrete estrogen, progesterone, inhibin and relaxin. |
| What is progesterone important for? | Maintains uterus in a state that allows the egg to bind to the uterus. |
| Fallopian tube | Sweeps egg down and semen up. This is where fertilization occurs. Embryo turns into a baby and the egg goes through meiosis 2 and divides o form an individual. |
| What happens if he egg isn't fertilized? | Enters uterus but doesn't stick to the lining so it falls and you get menses. |
| Vagina and Vaginal cavity | Take semen and fertilization occurs. The penis enters here. This is also a passage for menstrual flow. |
| Cervix | during intercourse it gets longer to pick up semen and bring it into uterus. You get a cervical plug when fertilization occurs and it prevents semen and bacteria from entering. |
| Vulva | Mons pubis, erectile tissue of clitoris, labia majora, labia minor, vestibule (opening) |
| How does liquid in women with sexual arousal help? | Helps penis enter and helps semen flow and survive in uterus. |
| What is a hostile uterus? | wrong environment for implantation of egg or antibodies are produced against sperm. |
Created by:
Lillejoa
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