Male reproductive system — role?
Produce and deliver sperm for fertilization.
Haploid cells — definition?
Cells with half the genetic material, sperm and ovum.
Fertilization — process?
Sperm and ovum fuse to form a zygote.
Capacitation — mechanism?
Biochemical sperm maturation enhancing motility.
Acrosome reaction — function?
Enzymes digest ovum outer layers for entry.
Cortical reaction — purpose?
Prevents additional sperm from entering the ovum.
Syngamy — meaning?
Fusion of male and female pronuclei.
Fertilization stages — sequence?
Ejaculation, sperm travel, penetration, fusion.
Embryonic development — stages?
Germinal, embryonic, fetal stages.
Germinal stage — includes?
Fertilization, cleavage, morula, blastocyst, implantation.
Embryonic stage — weeks?
Weeks 3–8, organogenesis occurs.
Placental development — timing?
Begins early, completes by weeks 14–16.
Answer 6 questions on Human Reproductive and Embryonic Development.
1. What is the embryonic stage in human development?
2. How does placental permeability to fetotoxic substances influence fetal development?
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