Unit 8: Human reproduction section 1

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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


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