2.1.3Processl.Sperm passthroughthe corona2. Sperm penetrates the zona pellucida3. Sperm head attaches to the secondary oocyte4. Oocyte completes the second meiotic division, thenucleus of mature ovum is named the female pronucleu5. sperm tail degenerates, sperm head enlarges to formthemalepronucleus6. Male and female pronuclei fuse
1. Sperm pass through the corona 2. Sperm penetrates the zona pellucida 3. Sperm head attaches to the secondary oocyte 4. Oocyte completes the second meiotic division, the nucleus of mature ovum is named the female pronucleus 5. sperm tail degenerates, sperm head enlarges to form the male pronucleus 6. Male and female pronuclei fuse 2.1.3 Process
Fertilization
Fertilization
Sperm touch with the corona
精子接触放射冠和透明带 生殖细胞和受精 Sperm touch with the corona
Sperm pass through the corona
精子顶体反应溶解放射冠和透明带 生殖细胞和受精 Sperm pass through the corona
Sperm penetrates the zona pellucidaA zona reaction occurs
一个精子进入后引起透明带反应 生殖细胞和受精 Sperm penetrates the zona pellucida A zona reaction occurs