Process of Human Fertilization

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6 Questions

Seminal fluid is alkaline to protect sperm from the acidic vaginal environment and contains enzymes to liquefy the gel and sugars to nourish the ______

sperm

During ejaculation, around 300 million ______ are released from the testes through the vas deferens

sperms

Sperm swim through cervical mucus to reach the uterus, where during ovulation, the environment becomes more favorable for sperm ______

penetration

Fertilization typically occurs in the ampullar-isthmic junction of the ______ tube, with contractions aiding sperm movement towards the egg

fallopian

The first sperm enter the fallopian tubes shortly after ejaculation, with only a few surviving the journey to meet the ______

egg

Upon contact with the egg, sperm burrow through cells, bind to the ______ pellucida, release enzymes, and fuse with the egg membrane to prevent other sperm from attaching

zona

Study Notes

  • During ejaculation, around 300 million sperms are released from the testes through the vas deferens, reaching the prostate where fluid is released to push semen through the urethra.
  • Seminal fluid is alkaline to protect sperm from the acidic vaginal environment and contains enzymes to liquefy the gel and sugars to nourish the sperm.
  • Sperm swim through cervical mucus to reach the uterus, where during ovulation, the environment becomes more favorable for sperm penetration.
  • Fertilization typically occurs in the ampullar-isthmic junction of the fallopian tube, with contractions aiding sperm movement towards the egg.
  • The first sperm enter the fallopian tubes shortly after ejaculation, with only a few surviving the journey to meet the egg.
  • Upon contact with the egg, sperm burrow through cells, bind to the zona pellucida, release enzymes, and fuse with the egg membrane to prevent other sperm from attaching.
  • The fusion of genetic material from the sperm and egg forms a zygote with a full set of chromosomal DNA, unique characteristics, and the potential to develop into a new person.

Explore the steps involved in the process of human fertilization, from ejaculation to the formation of a zygote. Learn about the journey of sperm, interactions with the female reproductive system, and the fusion of genetic material.

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