Lesson 1

•  Ovary- is where the egg cells are produced from the ovary.
•   Egg cells- develop surrounded by follicle cells which nourish them. Also known as ovum
•   Occyte - cell in an ovary, which may undergo meiotic division to form an ovum
•   Uterus- where the zygote develops into an embryo until the structure starts
•   Haploid- of a single set of chromosomes in an organism cells
•   Diploid- 2 sets of chromosomes
•   Testes- the male gonad which produce the sperm
•   Zygote(cleavage)- eight-cell stage (cleavage) blastula ( hollow ball) gastrulation- grastula
•   Cleavage- it undergoes successive cell division to form embryo
•   Dizygotic twins or fraternal twins- forms two separate eggs and are fertilized by two different sperm: they genetically different
•   Identical twins- created when one zygote sponge cell splits into two, their DNA is exactly the same. Same gender
•   Spermatogenesis- is the process by which sperm cell production occurs
•   Aristotle: father of biology
•   William Harvey - father of physiology
•   Martin lluelyn- connection between hen, wife, and the concept of birth
•   Antione van Leeuwenhoek was the first person to observe microorganisms / first microscopic ( human spermatozoa) living creature in semen./ animalcules
•   Christian huygens- publish first description of spermatozoa. Successor of leeuwenhoek
•   Nicolas hartsoeker- reported observation on roster semen
•   Johan ham- medical student at leiden
•   Carl ernst von baer - mammalian oocytes
•   Edouard van beneden- first observe fertilization
•   Richard Owen- sperm as parasites