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Fertilization
Male Gametes (sperm)
Female Gametes (egg)
Mitosis: Cell division that results in 2 daughter cells each with the same chromosomes, after cells period of interphase, there are 4 major phases to mitosis that take place in following order:
1) Prophase
2)Metaphase
3)Anaphase
4)Telophase
Blastocyst
A blastocyst is formed when the zygote is rapidly dividing and creating cells for different things, after dividing cells, the cells of the inner group will become an embryo. The hormones involved are estrogen and progesterone.
A toddlers will show more independence, identify themselves in mirrors or photos, and copy the actions of others, particularly parents and older siblings. A toddler will learn to speak, crawl, and walk.
A child will learn to climb and run. enjoys playing with other kids, has trouble sharing. cries often, but feelings and emotions change quickly. A child learns and grows most of the time by playing.
A teenager may gain many inches in a few months, then have fairly slow development for a while before experiencing another growth spurt. also have changes with puberty.
A young adult is most likely able to produce his or her gametes (sperm or egg) therefore likely able to reproduce by combining their gametes with opposite sex.
What are hormones?
Hormones are chemical messengers made by your body's endocrine system. They travel in your bloodstream to tissues or organs. They affect many different processes, including: growth and development, metabolism, how your body gets energy from the foods you eat, sexual function, mood, and reproduction. Hormones have three categories:
1) Lust 2) Attraction 3) Attacment.
How do we get hormones?
Endocrine glands, which are special groups of cells, which make hormones. The major endocrine glands are: pitruitary, pinial, thyroid, thymus, adrenal, and pancreas.
Driven by desire for sexual gratification. The need to reproduce stems from an evolutionary basis as a way to pass on genes and perpetuate species. Hypothalamus of the brain stimulates production of sex hormones testosterone and estrogen in testis and ovaries.
Dopamine and norepinephrine are released during attraction, produced by the hypothalamus of the brain, the primary "rewards" centers of the brain triggered, Reduction in serotonin which underlies overpowering infatuation.
Predominant factor in long-term relationships. The primary hormones include oxytocin and vasopressin, are important for bonding, both hormones are released by hypothalamus.