4.05 Remember the structures of the reproductive system

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1 4.05 Remember the structures of the reproductive system

2 Scrub In The external area between the vulva and the anus is the : a. Cervix b. Endometrium c. Perineum d. Vagina What structure connects the testes with the vas (ductus) deferens? a. Ejaculatory ducts b. Urethra c. Cowper s glands d. Epididymis 2

3 4.05 Remember the structures of the reproductive system Essential question What are the structures of the reproductive system? 3

4 Structures of the 4

5 Structures of the Ovary (female gonad) Primary sex organs of the female Located in the lower part of the abdominal cavity About the size of an almond Each ovary contains thousands of microscopic sacs (follicles) Ova (egg cells) Known as the female The ovum is the largest cell in the human body. gamete or Graafian follicle 5

6 Structures of the Humans have 46 chromosomes. 44 are autosomes (nonsex chromosomes) and 2 are sex chromosomes. Female gametes have 22 pairs of autosomes and a single pair of sex chromosomes XX 6

7 Fallopian tube Also known as oviduct or uterine tube Approximately 4 long Not attached to the ovaries Structures of the 7

8 Uterus Hollow, thick-walled, pearshaped, highly muscular organ Lies behind the urinary bladder and in front of the rectum Structures of the 8

9 Uterus Fundus Bulging upper part of the uterus Body The body is the middle portion Cervix The narrow portion that extends into the vagina Structures of the 9

10 Structures of the Uterine wall Perimetrium (visceral peritoneum) outer layer Myometrium thick muscle layer Endometrium mucous lining Perimetrium Myometrium Endometrium 10

11 Cervix The cervix is the lower end of the uterus Located at the top of the vagina Approximately one inch long Structures of the 11

12 Vagina Smooth muscle with a mucous membrane lining which leads from the cervix to the outside of the body. Approximately 10 centimeters long Also known as the birth canal Hymen External opening of the vagina may be covered by a perforated membrane Structures of the 12

13 External genitalia Vulva External organs of reproduction Labia Folds of skin that surround the vagina Labia majora Labia minora Structures of the 13

14 External genitalia Clitoris Erectile tissue Perineum External area between the vulva and anus Structures of the 14

15 Structures of the Ovary Fallopian tube Clitoris Vagina Uterus Cervix 15

16 Mammary glands (breasts) Consists of 15 or 20 lobes of granular and adipose tissue Areola Darkened area that surrounds the nipple Structures of the 16

17 Structures of the male reproductive system 17

18 Structures of the male reproductive system Scrotum Sac of skin that contains the testes 18

19 Testes (two) Primary reproductive organ About the size of an egg Seminiferous tubules Each testis contains 1-4 minute, convoluted tubules. Where sperm develop. Epididymis Structures of the male reproductive system Coiled duct on the posterior and lateral part of the testes. Connects the testes with the vas deferens. Where sperm is are stored. 19

20 Sperm (spermatozoa) The male gamete Structures of the male reproductive system Smallest cell in the human body. 20

21 Structures of the male reproductive system Reproductive system of ducts Vas (ductus) deferens runs from epididymis to ejaculatory duct Seminal vesicles connect to vas deferens Ejaculatory duct connects vas defernes with urethra 21

22 Urethra Connects to reproductive system of ducts Passage way for urine and sperm Prostate gland Surrounds the opening of the bladder leading into the urethra. Size and shape of a strawberry. Bulbourethral glands Located on either side of urethra and below the prostate Structures of the male reproductive system 22

23 Structures of the male reproductive system Penis Contains Erectile tissue Prepuce (foreskin) Covers the tip of the penis 23

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