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类别全部 - meiosis - fertilization

作者：nur mastura 9 年以前

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egg activation

During the process of egg fertilization, a series of complex and coordinated events occur to ensure successful reproduction. The initial fusion of the egg and sperm triggers a significant rise in calcium levels within the egg, which in turn stimulates the release of cortical granules.

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To restart meiosis, the calcium signal mediates dramatic rearrangement of egg surface including :

egg activation

>Initiated by the fusing of egg and sperm >Causes rise in Ca2+ >Stimulate cortical granules to release their contents outside the egg >Cause formation of fertilization envelope (to slow block polyspermy)

egg activation

During the process of egg fertilization, a series of complex and coordinated events occur to ensure successful reproduction. The initial fusion of the egg and sperm triggers a significant rise in calcium levels within the egg, which in turn stimulates the release of cortical granules.

Genetic Variance

CC: Chronic Constipation x 5 years

Food Pyrmid

life cycle[umar]

To restart meiosis, the calcium signal mediates dramatic rearrangement of egg surface including :

egg activation

>Initiated by the fusing of egg and sperm >Causes rise in Ca2+ >Stimulate cortical granules to release their contents outside the egg >Cause formation of fertilization envelope (to slow block polyspermy)

Once egg activated,egg will resume and complete meiosis ii with release of 2nd polar body

Stages of egg fertilization

5) Cortical changes takes place (gray crescent in amphibians)

4)Vitelline layer strengthen and thickens

3)Formation of fertilization membrane

2) Sperm is drawn into egg cytoplasm

1) Egg membrane wraps microvilli around sperm head

Main topic

Initiated by

Independent Fertilization

Fertilization

Meaning

Process of interaction between sperm and egg at fertilization which stimulates the eggs to begin development

Mindomo

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egg activation

During the process of egg fertilization, a series of complex and coordinated events occur to ensure successful reproduction. The initial fusion of the egg and sperm triggers a significant rise in calcium levels within the egg, which in turn stimulates the release of cortical granules.

Genetic Variance

CC: Chronic Constipation x 5 years

Food Pyrmid

life cycle[umar]

To restart meiosis, the calcium signal mediates dramatic rearrangement of egg surface including :

egg activation

>Initiated by the fusing of egg and sperm >Causes rise in Ca2+ >Stimulate cortical granules to release their contents outside the egg >Cause formation of fertilization envelope (to slow block polyspermy)

Once egg activated,egg will resume and complete meiosis ii with release of 2nd polar body

Stages of egg fertilization

5) Cortical changes takes place (gray crescent in amphibians)

4)Vitelline layer strengthen and thickens

3)Formation of fertilization membrane

2) Sperm is drawn into egg cytoplasm

1) Egg membrane wraps microvilli around sperm head

Main topic

Initiated by

Independent Fertilization

Fertilization

Meaning

Process of interaction between sperm and egg at fertilization which stimulates the eggs to begin development

宣揚 Mindomo

Mindomo

更多資料

常見問題FAQ