Related Anatomy

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Related Anatomy

• Unit 17 Reproductive System

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Footprints?
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1. Male reproductive system

• The male reproductive system consists of organs
  whose function is to produce SPERM.This system
  consists of a pair of testes and a network of
  excretory ducts (epididymis,vas deferens, and
  ejaculatory ducts, seminal vesicles, the
  prostate, the bulbourethral glands, and the
  penis.

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Male reproductive
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Male reproductive

• Sperm production begins at puberty and continues
  throughout the life of a male. The entire
  process, beginning with a primary spermatocyte,
  takes about 74 days. After ejaculation, the sperm
  can live for about 48 hours in the female
  reproductive tract.

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2. Male Hormones

• The male sexual response includes erection and
  orgasm accompanied by ejaculation of semen.
• 3 male sex hormones
• Follicle-stimulating hormone (FSH) stimulates
  spermatogenesis
• luteinizing hormone (LH) stimulates the
  production of testosterone
• testosterone stimulates the development of male
  secondary sex characteristics and
  spermatogenesis.

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3. FEMALE reproductive organs

• Ovary- egg (ova)
• Fallopian tube
• Uterus
• cervix
• vagina

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4. Menstrual Cycle

• Approx 28 days
• Wk1 Menstruation
• Wk 2 Endometrium build up
• Wk 3 day 14 ovulation peak estrogen
• Wk 4 nutrient filled endometrium

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Cycle
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Fertilization

• Fertilization- sperm penetrates egg, pregnancy
  occurs, conception
• Middle of cycle

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Pregnancy Stages

• 266 days or 9 months
• Fertilized egg is a ZYGOTE
• Embryo-2 days- 8th wk
• Fetus- 9th week

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6. Amnion and Placenta

• Amnion- sac around developing embryo, fluid
• Placenta- organ of exchange of nutrients and
  wastes between mother and embryo

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7. 3 stages of birth

• 1st stage- uterine contractions
• 2nd stage- cervix fully dilated- delivery
• 3rd stage- placenta expelled, afterbirth

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Stages

• Embryo
• Fetus
• Neonatal ( 1month old)
• Infant ( 2yrs)
• Child 2-12
• Adolescence 13-21
• Adult- young, middle, old( 40,65)