Human Reproductive System Review Male Reproductive System Sperm
- Slides: 13
Human Reproductive System Review
Male Reproductive System
Sperm Formation • • • MEIOSIS forms sperm in gametes Sperm forms in testes Scrotum keeps cooler than rest Semen is sperm plus protecting fluid Semen leaves testes through the vas deferens (sperm ducts) to the urethra before it exits.
Secondary Sexual Characteristics - Male • Produced by testosterone – Deeper voice – Chest and facial hair – Lengthen bones – Increased size of testes for sperm production
Female Reproductive System Mrs. Degl
Ovum Formation • MEIOSIS forms the eggs (ova) • Eggs are formed before birth • 1 egg per month is matured and released from ovaries, most of the time • Eggs travel through the fallopian tube where they may become fertilized
Secondary Sexual Characteristics - Female • Induced by increased LH, FSH, estrogen, and progesterone hormone levels – Pubic hair – Widen pelvis – Enlarge mammary tissue (breasts) – Begin menstrual cycles
Fertilization • • Occurs in upper 1/3 of Fallopian tube Only 1 sperm can fertilize an egg Fertilized egg = zygote An average woman is pregnant (gestational period) for 9 whole months. That is 40 weeks. Babies can survive if they are born earlier, but they may have complications due to being premature.
Implantation • Fertilized eggs are implanted into thick walls of uterus • Zygote grows into an embryo • Embryo gets air and nutrients through the umbilical cord • Mom’s uterus grows with the baby
1 st Trimester = 1 st 12 weeks • Heart develops first • Neural tube develops • All body systems appear by Week 8 – Now a Fetus
2 nd Trimester = up to 24 weeks • Most growth • Looks more like a baby • Some preemies survive at this stage
3 rd Trimester = Up to 40 weeks • • • More growth Kicking, rolling, stretching Eyes open – Week 32 Lungs mature Rotates to head-down position, unless baby is breech Mrs. Degl
Birth • Labor – Uterine contractions begin – Cervix dilates to 10 cm. • Birth – Uterus pushes baby through vaginal canal – Placenta delivered after baby – Cesarean Section (c-section) is a surgery that cuts through the uterus to deliver the baby if it cannot be born vaginally
- Where is sperm located
- Pathway of sperm in male reproductive system
- Exercise 42 anatomy of the reproductive system
- Why are sperm whales called sperm whales
- Where is the sperm produced
- Identify the structure
- Male reproductive system from front
- Examination of reproductive system
- Frog testis labeled
- Lutalphase
- Figure 28-1 the male reproductive system
- What is reproductive system
- Figure 16-1 male reproductive system
- Reproductive physiology