Structures of the Reproductive System: Female and Male

1. 4.05 Remember the structures of the reproductive system

2. 4.05 Remember the structures of the reproductive system Essential question • What are the structures of the reproductive system? 4.05 Remember the Structures of the Reproductive System

3. Structures of the female reproductive system 4.05 Remember the Structures of the Reproductive System

4. Ovary (female gonad) Located on either side of the pelvis, lateral to the uterus About the size of an almond Each ovary contains thousands of microscopic sacs called graafian follicles Inside each follicle, an ovum develops Ova (plural of ovum) The female gamete or reproductive cells (the egg) Structures of the female reproductive system The ovum is the largest cell in the human body. 4.05 Remember the Structures of the Reproductive System

5. Except for gametes, every cell in your body has 46 chromosomes. Gametes (specialized sex cells) have 23 22 autosomes (nonsexchromosones) and single sex chromosomes The 23 from the sperm and 23 from the ova combine to make the 46 Structures of the female reproductive system Did you know??? What makes a person a girl instead of a boy???

6. Fallopian tube Also known as oviduct or uterine tube Approximately 4” long Not attached to the ovaries Finger like projections at ends - fimbriae Structures of the female reproductive system 4.05 Remember the Structures of the Reproductive System

7. Uterus Hollow, thick-walled, pear-shaped, highly muscular organ Lies behind the urinary bladder and in front of the rectum It is divided into 3 sections and has 3 layers Structures of the female reproductive system 4.05 Remember the Structures of the Reproductive System

8. Uterus 3 sections of uterus: Fundus Bulging upper part of the uterus Body The body is the middle portion Cervix The bottom section that has a narrow opening and extends into the vagina Structures of the female reproductive system 4.05 Remember the Structures of the Reproductive System

9. Cervix The cervix is the bottom section of the uterus that has a narrow opening and extends into the vagina Approximately one inch long Structures of the female reproductive system 4.05 Remember the Structures of the Reproductive System

10. Uterus 3 layers of the uterus Perimetrium Outer layer Myometrium Thick smooth muscle middle layer Endometrium Inner mucous layer Structures of the female reproductive system Perimetrium Myometrium Endometrium 4.05 Remember the Structures of the Reproductive System

11. Vagina Smooth muscle with a mucous membrane lining Approximately 10 centimeters long Also known as the birth canal Hymen Perforated membrane that may be at or near opening of vagina Structures of the female reproductive system 4.05 Remember the Structures of the Reproductive System

12. Vulva External female genitalia Contains labia, clitoris, and perineum Structures of the female reproductive system

13. External genitalia Labia Folds of skin that surround the entrance to the vagina Labia majora – outside fattier folds Labia minora – inner folds of skin Structures of the female reproductive system

14. External genitalia Clitoris Erectile tissue Contains many nerve endings Perineum Area between the vagina and rectum Structures of the female reproductive system 4.05 Remember the Structures of the Reproductive System

15. Mammary glands (breasts) Consists of 15 or 20 milk producing lobes Areola - Darkened area that surrounds the nipple Structures of the female reproductive system

16. Structures of the male reproductive system 4.05 Remember the Structures of the Reproductive System

17. Structures of the male reproductive system Scrotum • External sac of skin that contains the testes 4.05 Remember the Structures of the Reproductive System

18. Structures of the male reproductive system Testes (two) • Primary reproductive organ in males • About the size of a small egg • Suspended in the sac of the scrotum • Seminiferous tubules • Minute, convoluted tubules in the testes Epididymis • Coiled duct that connects to the testes / vas deferens 4.05 Remember the Structures of the Reproductive System

19. Structures of the male reproductive system Sperm • The male gamete (sex cell) • Smallest cell in the human body. 4.05 Remember the Structures of the Reproductive System

20. Structures of the male reproductive system Structures of the male reproductive system Vas Vas Vas deferens • 45 cm structure connecting epididymis to ejaculatory duct • One from each testicle Seminal vesicles • Small sacs where seminal fluid is stored • One on each side Ejaculatory duct • Short, narrow duct that starts where the vas deferens and seminal vesicles meet • Leads to the urethra Urethra Urethra 4.05 Remember the Structures of the Reproductive System

21. Structures of the male reproductive system Vas deferens • 45 cm structure connecting epididymis to ejaculatory duct • One from each testicle Seminal vesicles • Small sacs where seminal fluid is stored • One on each side Ejaculatory duct • Short, narrow duct that starts where the vas deferens and seminal vesicles meet • Leads to the urethra Vas 4.05 Remember the Structures of the Reproductive System

22. Structures of the male reproductive system Urethra • Passage way for urine and sperm • So - shared between urinary and reproductive systems in men Prostate gland • Surrounds the urethra at the neck of the bladder Bulbourethral glands • Pea-sized and inferior to the prostate prostate Urethra 4.05 Remember the Structures of the Reproductive System

23. Structures of the male reproductive system Penis • Contains erectile tissue Prepuce (foreskin) • Covers the tip of the penis • Can be removed with circumcision • circumcision video 4.05 Remember the Structures of the Reproductive System

24. 4.05 Remember the structures of the reproductive system Male Reproductive Structures VIDEO 4.05 Remember the Structures of the Reproductive System

25. 4.05 Remember the structures of the reproductive system https://www.youtube.com/watch?v=-XQcnO4iX_U 4.05 Remember the Structures of the Reproductive System