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reproduction in humans, 0.05 mm - Coggle Diagram
reproduction in humans
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SEXUAL REPRODUCTION
fusion two gametes (sex cells, haploid) becomes zygot (diploid), production of offspring is genetically different from each other and parents,
sperm reach ovum (fuse), sperm nucleus passes into ovum and two nuclei fuse (fertalization)
cell formed(zygot)
grow by cell division, produce embryo then fully formed animal
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MALE REPRODUCTIVE
ORGANS
testes, production of male gametes (sperm)
scrotum, sac that holds the testes outside the body
sperm ducts, transfer sperm to the urethra;
prostate gland, secretes fluids for sperm to swim in forming semen
urethra, carries urine and semen out of the body
penis, transfers semen to vagina during sexual intercourse
bladder, sac which receives urine from the kidneys, and stores it for excretion.
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egg
Eggs begin formed inside girl's ovaries before is born. At birth, have thousands of partly developed eggs.
age 10-14, eggs begin to mature. Usually, one a time. When mature, egg cell bursts out of ovary in funnel at end of oviduct (ovulation). In humans, once a month
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