Unit 8: Human reproduction section 1
Place where urine exits
Urethra
If an egg is not fertilized what will happen?
Will die within 24-48 hours
Define menstrual cycle
Change in the uterus
What prevents new follicles?
Corpus luteum through the luteal phase
The penis contains 3 what?
Cylinders of spongy tissue where blood collects
How long does the menstrual cycle last?
28 days
One ovum is released how often?
28 days
During ejaculation how much sperm and semen are expelled?
300-400 million, 3.5 ml of semen
Neutralizes traces of acidic urine in the urethra
Bulbourethal glands
Sperms exit through
Ejaculation
Sperm move where to mature, this is where most sperm are stored?
Epididymis
The ovum moves where and how long does it take?
Fallopian tubes, toward uterus 3-4 days
What happens if egg gets fertilized in female reproductive system?
Female will nourish and protect it through 9 months of pregnancy
If fertilization occurs, which phase continues?
Fertilization
Egg is released when what happens?
Follicle bursts
What is the menstrual cycle influenced by?
Hormone levels in the ovarian cycle
Why is there bleeding during menstruation?,
Lining breaking causes blood vessels to break
What prepares females for pregnancy each month?
Menstrual cycle
When sperm cells move into the urethra what do they do?
Move into urethra and mix with fluid from glands
How many eggs mature each month during puberty?
Normally 1
Fluids from glands do what?
Nourish sperm and help them through the female reproductive system
Changes in ovaries
Ovarian cycle
Process of a follicle bursting
Ovulation
What do ovaries do during the ovarian cycle?
Prepare and release eggs
What does the female reproductive system do?
Prepares for a possible pregnancy each month by releasing a mature egg cell
Role of male in sexual reproduction
Produce sperm cells, deliver sperm cells to female reproductive system to fertilize an egg cell
Ovaries begin meosis when?
Puberty
Where are the testicles located?
Scrotum
A mixture of fluid and sperm
Semen
Fluid for energy for sperm
Seminal vesicles
Testicles contain what?
Seminferous tubules
What do testicles produce?
Sperm
What must happen for fertilization to occur?
Sperm are deposited in the vagina,must pass through the cervix into the uterus then to the egg in fallopian tube
What happens before ovulation?
Uterus wall thickens
2 places move to exit the body
Vas deferens and urethra
Eggs mature in the follicle
Follicular phase
Fluid to neutralize acids in female reproductive system are produced where?
Prostate gland
What happens at the same time as menstruation?
Luteal phase ubit
When the thick lining of the uterus sheds?
Menstrustion
What deposits sperm in the female reproductive system?
Penis
Where are sperm produced through meiosis?
Seminiferous tubules
Menstruation happens how long after ovulation?
14 days after
At birth about how many eggs is a female born with?
2 million immature eggs
