Chapter 25: Reproductive system Flashcards


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1

genitalia

sex organs

2

gonads

primary sex organs

testes in males

ovaries in females

3

gametes

sex cells produced by gonads

4

testes

paired ovals, or testicles, sperm producing, lie in scrotum

5

scrotum

sac of skin that holds the testes

6

cremaster muscle

bands of skeletal muscle, responsible for elevating the testes

7

dartos muscle

responsible for wrinkling the scrotal skin

8

seminiferous tubules

"sperm factories", 1-4 coiled, looped like hairpins

9

pampiniform plexus

venous network in the scrotum

10

epididymis

where sperm mature, comma shaped organ that arches over the posterior and lateral sides of the testes

11

ductus deferens

"vas deferens", stores and transports sperm during ejaculation

12

ejaculatory duct

ductus deferens distal end expands as the ampulla of the ductus deferens and then joins with the duct of the seminal gland to form the

13

spermatic cord

a tube of fascia that also contains the testicular vessels and nerves

14

inguinal canal

an obliquely oriented trough in the anterior abdominal wall

15

semen

sperm plus the secretions of the accessory glands and accessory ducts

16

seminal glands

"seminal vesicles", secretes about 60% of the volume of semen; lie posterior to the surface of the bladder

17

prostate gland

secretion constitutes about 1/3 of semen; size of a chestnut, encircles the first part of the urethra just inferior to the bladder

18

penis

male organ of sexual intercourse, delivers sperm into the female reproductive tract

19

glans penis

root and free body that ends in an enlarged tip

20

prepuce

foreskin, loose and extends distally around the glans to form a cuff

21

erectile bodies

a thick tube covered by a sheath of dense connective tissue and filled with a network of partitions that consist of smooth muscle and connective tissue

22

corpus spongiosum

mid ventral erectile body surrounding the urethra, enlarged distally where it forms the glans and proximally where it forms a part of the root called the bulb of the penis

23

bulb of the penis

formed by the corpus spongiosum; secured to the genital diaphragm and is covered externally by the sheetlike bulbospogiosus muscle.

24

corpora cavernosa

paired, dorsal erectile bodies, make up most of the mass of the penis

25

crus of the penis

proximal ends in the root of the corpora cavernosa; anchored to the pubic arch of the bony pelvis and is covered by an ischiocavernosus muscle

26

perineum

"around the anus", contains the scrotum, the root of the penis, and the anus

27

ovaries

primary female reproductive organs, ovum-producing; located on the lateral sides of the uterus

28

broad ligament

a large fold of peritoneum that hangs form the uterus and the uterine tubes like a tent

29

suspensory ligament of the ovaries

a lateral continuation of the broad ligament; attaches the ovary to the lateral pelvic wall

30

ovarian ligament

anchors the ovaries to the uterus; fibrous band enclosed within the broad ligament

31

uterine tubes

also called "oviducts" or more commonly called fallopian tubes, receive the ovulated oocyte and are the site for fertilization

32

uterus

lies in pelvic cavity, functions to receive, retain, and nourish a fertilized egg throughout pregnancy

33

body of the uterus

major portion of the uterus

34

fundus of the uterus

rounded region superior to the entrance of the uterine tubes

35

cervix

narrow neck of the uterus, the inferior tip which projects into the vagina

36

cervical canal

communicates with the vagina inferior through the external os

37

external os

allows communication with the vagina inferiorly

38

internal os

allows communication with the vagina superiorly

39

mesometrium

anchors the uterus to the lateral pelvic walls; "mesentery of the uterus"; largest division of the broad ligament

40

round ligaments of the uterus

paired; binds the uterus to the anterior body wall

41

myometrium

bulky, middle layer of the uterus wall

42

endometrium

the mucosal lining of the the uterine cavity

43

vagina

a thin-walled tube that lies inferior to the uterus; also called the birth canal

44

vulva

external genitalia

45

labia majora

two long, hair covered, fatty skin folds, encloses the labia minora

46

labia minora

two thin, hairless folds of skin which encloses the vestibule

47

vestibule

"entrance hall", houses the external openings of the urethra and vagina

48

clitoris

a protruding structure composed largely of erectile tissue that is sensitive to touch and swells with blood during sexual stimulation

49

prepuce of the clitoris

hoods the clitoris, formed by the anterior junction of the labia minora

50

mammary glands

modified sweat glands that are present in both sexes, but function in lactating in only females