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Transcript of Human Reproduction
Seminal vesicle and Prostate Gland becomes
provides fluids Journey of the Male Gamete Genetic Code Semen travels through Urethra moves outside body Journey of the Female Gamete Genetic Code Fertilization Zygote Cell Cycle Mitosis Phase 1: Prophase Phase 2: Metaphase Phase 3: Anaphase Phase 4: Telophase Nucleolus and Nuclear Membrane disappear Spindle fibres begin to form Spindle fibres stretch across the cell Spindle fibres pull and tug on Double-stranded chromosomes In a line across the middle Spindle fibres shorten and contract Replicated strands Move to opposite ends of the cell Two nuclei Complete set of chromosomes at each end Nucleus forms and spindle fibres disappear Process Repeats Itself DNA Replication Stage Blastocyst Implantation Fetal Development About Fetal Development There are 3 trimesters During each trimester: Major changes happen Each trimester last for about 3 months Trimester 1 Embryo Fetus Becomes (Weeks 1-12) All major organs have begun developing Has beginning of liver, stomach, heart and brain Trimester 2 (Weeks 12-24) Fingerprints have developed Brain grows and nervous system functions Organs are formed but not fully developed Trimester 3 (Weeks 24-38) Immune System develops Fetus opens its eyes All organs are fully developed It's a baby! Face Hand Birth Three stages of birth Dilation Stage Uterine contractions + oxytocin makes cervix open/dilate Water breaks (amnion breaks) Expulsion Stage Forceful contractions push baby through cervix Baby's head rotates so it is easier to go through birth canal Placental Stage Placenta and umbilical cord are expelled from the uterus Baby is Born! Young Child Teen Adult The process will continue to repeat itself for as long as humans will exist. Thank You By: Nabil Basri 9-5