What happens during fertilization in humans a | vedclass

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Question

(a) : The process of fusion of a sperm with anovum is called fertilization. During fertilization, asperm comes in contact with the zona pellucida laye

Vedclass · Accepted Answer

Secretions of acrosome helps one sperm enter cytoplasm of ovum through zona pellucida.

Vedclass · Answer

(a) : The process of fusion of a sperm with anovum is called fertilization. During fertilization, asperm comes in contact with the zona pellucida layerof the ovum and induces changes in the membranethat block the entry of additional sperms. Thus, itensures that only one sperm can fertilize an ovum.The secretions of the acrosome help the sperm enterinto the cytoplasm of the ovum through the zonapellucida and the plasma membrane. In contact withthe surface of egg covering, the acrosome releases itscontained hydrolytic enzymes, also called spermlysins. It is known as acrosomal reaction. Acrosomereaction results in dissolving of corona cells anddegeneration of zona pellucida which helps in spermpenetration.

What happens during fertilization in humans after many sperms reach close to the ovum?

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Fertilisation of an egg cell it means......

$(1)$ End of process of oogenesis

$(2)$ Induces the completion of the second meiotic division

$(3)$ The corpus luteum degenerates

$(4)$ Signals for maintain progesterone level in blood

$(5)$ Formation of zygote

Unfertilized egg of human contains or When released from ovary, human egg contains

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In human female the blastocyst