GeneXus 9.0: Metodologia para conversão Armin Bachmann [email protected].
By: Jonathan and Armin. Anatomy Menstrual Cycle The cycle of changes in the female reproductive...
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Transcript of By: Jonathan and Armin. Anatomy Menstrual Cycle The cycle of changes in the female reproductive...
Menstrual Cycle, Spermatogenesis and Fertilzation
By: Jonathan and Armin
Anatomy
Menstrual Cycle The cycle of changes in the female
reproductive organs that prepares the body for pregnancy
Lasts 28 days Controlled by hormones from the ovary Ovary has 100 000’s of follicles with an
immature egg Ovum has the female genetic information
Menstrual cycle Day 1-14 Day 1-7: several follicles start to grow and
release estrogen Day 7: all follicles degrade except one Day 12: follicle releases estrogen to the
blood. The pituitary in the brain releases Luteinizing hormone
Menstrual Cycle Ovulation Ovulation: the release of a ripe ovum Day 14: LH makes the follicle grow and the
ovum is squeezed out Fallopian tube surrounds ovum and moves it
to the uterus Lives for 12-14 hours If not fertilized, it dissolves and is shed with
the uterus lining
Menstrual Cycle Day 15-28 Day 15-22:The ovum travels down the
Fallopian tubes to the uterus Day 23-28: If the egg is not fertilized, no
estrogen of progesterone is produced The thick lining in the uterus is not needed
and is shed The menstrual cycle starts again
Anatomy: Spermatogenesis
Spermatogenesis Sperm contains the male genetic information Is called a male gamete After 13 years of age, millions made daily Testosterone made by testicles Sperm form in the testicles Spends 4-6 weeks developing in the
epididymis Moves to the vas deferens
Spermatogenesis Seminal fluid is produced by the seminal
vesicles and the prostate gland Sperm are carried in the seminal fluid and
move through the urethra during ejaculation Each time up to 500 million sperm are
released Takes 70 days to mature
Fertilization The joining together of the female ovum and
the male sperm Conception is when the sperm enters the
ovum in the Fallopian tubes Only one sperm can penetrate the ovum The male and female gametes join to form a
zygote
Fertilization The 2 cells divide to make 4 Keep dividing until the embryo is full grown After 7 days, embryo implanted in the uterus The menstrual cycle stops until a few weeks
after birth
Fertilization
Bibliography Hyde/DeLamater Understanding Human
Sexuality 1997 McGraw-Hill Compamies http://deerparkhpe.wikispaces.com/7-2+HEA
LTH+2010-11 http://www.google.ca/imghp?hl=en&tab=wi