SDS150R Chapter Notes - Chapter 3: Birth Weight, Cell Migration, Spinach
7 May 2013
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Document Summary
Gametes- cells that unite at conception (ova in females; sperm in males) Every cell in the human body contains 23 pairs of chromosomes. However, sperm and ovum contain 23 single (unpaired) chromosomes. Zygote- a single cell created when sperm and ovum unite (22 pairs determine traits, called autosome, and 23rd pair determines the sex, called sex choromosomes) Assisted human reproduction (ahr)- any activity undertaken for the purpose of facilitating human reproduction (health canada) The act protects the health and safety of canadians undergoing ahr treatment and the children born from such procedures. Cryopreservation- preserving cells or tissues through a freezing process that stops all biological activity. Vitrification- the use of cryoprotectants along with rapid cooling to prevent the fluid in biological tissues (eg, eggs, semen, embryos) from forming ice crystals (that ct like glass shards on cell structures) and from dehydrating. This tissue becomes an inact, non-crystalline, glass-like solid that can be preserved for years.
