Male and Mammary Gland

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1

Gubernaculum testis

descent of testes in fetus
CT bands hold position of testes, shortened at 7 months

2

Descent of testes

process that movement of testes in fetus through abdominal muscles accompanied by pocket peritoneum

3

Testes

made of seminiferous tubules
site of spermatogenesis,
Sustentacular (sertoli) cells nourish
germ cell

4

Interstitial cells (Leydig)

surround seminiferous tubes
secretes testosterone

5

Scrotum

encloses testes @ cooler temperature

6

Penis

Copulatory organ (sex intercourse)
3 cylindrical bodies; corpus spongiosum and corpora cavernosa

7

Duct system

epididymis-- ductus deferens -- urethra

8

Epididymis

sperm swims from testes to ductus deferens, site of maturation

9

Ductus deferens

conveys sperms form epididymis to seminal vesicle into ejaculatory duct

10

urethra

sperm terminal portion, both sperm and urine go through here

11

Seminal Vesicles, Prostate Gland

2 accessory glands

12

fructose
ascorbic acid
coagulating enzyme
prostaglandins

seminal fluids contains (4)

13

prostate gland

secretion help activate sperm and neutralize female tract

14

spermatogenesis

production of sperm under meiosis

15

Mitosis

somatic division with 2 identical daughter cells

16

Meiosis

gamete division produce 4 cell

17

Acrosome

enzyme for fertilization helps sperm penetrate through ovum

18

Meiosis II

cell division with equal division of chromosomes

19

Meiosis I

half reduction diploid to haploid

20

Mitosis

spermatogonia; creates 2 daughter cell
type a: maintain germ line;
type b: primary spermatocytes

21

Type a

maintain germ line in spermatogonia

22

Type b

primary spermatocytes in spermatogonia
type?

23

Meiosis I

spermatocytes undergo ____ to become secondary spermatocytes

24

Meiosis II

secondary spermatocytes undergo ____ to become spermatids

25

Spermiogenesis

undergo morphological change to become sperm; 9 week process

26

Mammary Gland

Integumentary organ
Reproductive & placental hormones
Many secretory lobules per lobe
1 lactifererous duct per lobe

27

15-20

how many *lactiferous sinuses* open to surface of each nipple

28

Lactiferous Sinuses

milk is stored in what part of the mammary gland

29

Apocrine

associated with pigment and hair follicle
decent of mammary gland
sexual signaling or defense
(axillary & inguinal regions)

30

Eccrine

water sweat gland open to skin surface, varied distribution; thermoregulated

31

Nipple

basic therian (mammal) structure for mammary gland

32

Sebaceous gland

ear and eyelid (meibomian gland)
oily secretions

33

Mammary, Apocrine

what 2 glands have motor innervation and myoepithelial cells?

34

Sebaceous (sebum)

what gland is used before puberty?

35

Teat

specialized structure of ungulates

36

Precocial young

young for teat mammary gland for fast delivery in standing position

37

Altricial young

human young type; nipple for slow delivery in cradled arms

38

Licking microbes off skin during breastfeeding

how does the platypus build immune system?
(hint: breast milk production is sterile but delivery system is not )

39

Apocrine, Eccrine

name the 2 sweat glands

40

7 months

when do the gubernaculum testes shorten?