Reproductive System

• Reproductive system is a collection of internal and external organ that works together for the purpose of reproduction
• What is the reproductive organ of both sexes?
• The two main function of ovaries are to store and release of the ova and to produce female sex hormones, estrogen and progesterone
• Ovary or ovaries are attached to the uterus by ligaments and are counterpart of the testicles
• What is the size of a ova?

  A grain of sand
• How many ova does ovaries have?

  200,000 each
• How much ova mature and released over a lifetime

  400-500
• Ovulation happens when the egg is released from the ovary
• Ovulation happens every 28 days that happens at the 14th day of the cycle
• The other term of fallopian tubes is oviducts
• What is the size of the fallopian tubes?

  4 inch long and 3/16 inch in diameter
• What do oviducts carry towards the uterus?

  Egg cells
• Where do fertilization takes place?

  In the upper 3rd of oviduct
• What is the shape and size of the uterus

  Shape like an upside down pear and a size of fist
• Uterus is a hollow muscular organ lined with endometrium
• What is the main function of the uterus

  To protect and nourish a fetus
• After the childbirth the uterus shrinks back to the original shape in 6-8 weeks but will fully recover to about 9 months
• A normal healthy cervix is the strongest muscle in the body
• This is the neck or opening of the uterus

  Cervix
• Vagina is only a 3-4 inches long but will lengthen during arousal
• Vagina is used for intercourse and empty passageway leading from the vaginal opening to the uterus
• What do vagina secretes for a easier intercourse?

  Fluid
• Urethra is the opening to the bladder
• What do clitoris increases?

  Sexual pleasure
• Clitoris contains a small amount of erectile tissue and is a size of pea bump at the front of the labia
• • Day 1 - Menstruation begins (bleeding) • Day 5 - Menstruation is usually ended

  • Day 14 - Ovum has matured and bursts out of the ovary

  • Day 15 - After 24 hours the egg is done

  • Day 26 - In the absence of fertilization, estrogen/progesterone levels drop and the endometrium lining breads down

  • Day 28 - Menstruation begins again.
• Ages 9-12, secondary sex characteristics appear
• Ages 11 to 14, menstrual cycle begins
• Late '20s to '30s, peak of sexual urges
• Ages 45 to 55, menopause
• Scrotum is a sac-like pouch located behind the penis that holds each testes and helps regulate temperatures for sperm production
• Two testes produce sperm and male hormone testerone
• Testicles are the male sex gland
• Lose one of the two testes does not impair the function of the other
• About 4 to 5 billion sperm cells are produced each month
• Prostate gland produces about 30% of semen volume
• Sperms are destroyed by warm body temperature and can survive in a woman's body for 5 to 8 days 
• This is the smallest cell in a man's body

  Sperm
• Cowpers gland is located beneath prostrate gland that produce clear and sticky fluid that helps neutralize the acidity of urethra
• Contraction of the vas deferens along with the action of the cilia help transport the sperm throurthe vas deferens