5-dsr repr btn2

7/25/2019 5-Dsr repr btn2

1/19

Kuliah-5

DASAR REPRODUKSITERNAK

ORGAN

REPRODUKSITERNAK BETINA


2/19

2. Oviduct

Also called fallopian tubes

A pair of convoluted tubes (from near theovaries to the tips of the uterine horns)

The functions are (see lecture before) Consists three distinct layers:

The outer layer: tunica serosa(connectivetissue)

The middle layer: tunica muscularis(circularand longitudinal smooth muscle bers)

The innermost layer: tunica mucosa(ciliatedand secretory epithelial cells)


3/19

Oviduct, !"#h!l!$%

Length: 20 !0 cm "ivided into ! segments:

Infundibulum: funnel shape opening near theovary (mucosal cells are ciliated)

Ampula: middle segment# ! $ cm %# half oftotal length of oviduct& 20 '0 longitudinal

folds Isthmus: 0#$ cm %# thicer smooth muscle

layer than ampula# ' * mucosal folds& moresecretory than ciliated cells+

Ampullary,isthmic,-uction: delays the ovum

several hours during transport& site offertili.ation Utero-tubal-junction(/T): short segment

bet1een oviduct and uterus+ viduct is stimulated by estrogen and inhibited

by progestins


4/19

Anatomy of oviduct:


5/19

&. Ut'"u(

34tending from /T to the cervi4 !$ 50 cm long for co1# so1# mare

Consists: uterine horn and uterine

body /terine horn: *0 607 of total

uterine length in co1# so1# doe#

e1e& $07 in mare 8n e1e and doe# the uteri are less

than half of the other above animals


6/19

Ut'"u(, )u*cti!*

9a-or function: retain and nourishof embryo or fetus

roduces uterine milksecreted by

glands in the mucosal layer (asnutrients for the embryo beforeattachment to uterus)

After implantation# placenta playsthose important role (nutrients and1aste)


7/19

/terus# ' basic types:

+ Bicornuate uterus: co1# so1# e1e# doe;


8/19

>asic types of uteri found in mammals


9/19

Ut'"u(+ hi(t!l!$%,

uter layer tunica serose

9iddle layer: m!ometriumt1olongitudinal layer of smooth muscle# 1ith athicer circular layer sand1iched bet1een+3strogen stimulate to erect myometrium by

increasing the tone+ rogestins decreasesthe tone and causing it more ?accid+

8nner layer: endometrium# mucosal lininguterus# is more comple4# has simple glands+rogestins cause the endometrial glands to

coil and branch# and to secrete uterine mil+The synergistic actions of estrogens andprogestins on the endometrium are forpreparation of the uterus for pregnancy+


10/19

/terus# physiology

3ndometrium provides amechanism for attachment of thee4traembryonic membranes+

This union forms placenta placentation

Type of placenta:see ne4t page


11/19

/terus# Type of lacenta:

a. "ot!ledonar!(co1# e1e# doe): chorionic villi frome4traembryonic membranes penetrate intocaruncules# 1hich are button,lie pro-ection onthe endometrium+ This union (chorionic villi andcaruncle) formsplacentome@ cot!ledon+ There

are 0 20 cotldn attachments in latepregnancy of co1# ** 65 in e1es and does+

b. Difuse #surface) attachment (so1# mare): 34traembryonic membrane lie in folds on the

endometrium# 1ith chorionic villi e4tending intothe endometrium in a more fragile attachment


12/19

/terus# Type of placental attachment:

$pitheliochorial (so1# co1# mare): no erosion inboth of endemetrium and e4tra embryonicmembrane during placenta formation (nutrients andmaternal blood must pass through both maernal and e4tra embryonictissue to reach embryonic blood)

!ndesmochorial(e1e# doe): erosion in the

epithelial layer of endometrium %emochorial(huma# primates): e4tension

erosion in the epithelial of endometrium(nutrients form maternal blood must passthrough only e4traembryoic tissue layers to

reach fetal blood)+ %emoendothelial(rabbits): no e4tensive erosion

in both e4traembryonic membrane andepithelial layer of endometrium


13/19


14/19

. c'"vi

Technically a part of uterus 1ith thic,1alled and inelastic&

The anterior being continous 1ith theuterine body&

The posterior end protrudes into the vagina

Length: $ 0 cm# 2 $ cm#

Contains canal# 1ith opening into uterus

Cervical canal (co1# e1e# doe# so1) transverse interloing ridge : annular rin&sto seal uterus from contamination+


15/19

Cervi4& anatomy# histology

8n so1# cervical canal is funnelshaped# 1ith ridges having corscre1conguration

8n mare# cervical canal is more open Bistology:

uter layer: tunica serosa

9iddle layer: connective tissue 1ithsmooth muscle bers

8nner layer: mucosa layer containssecretory and ciliated epithelial cells


16/19

Cervi4# physiology

3strogen dilatation during estrus andparturation (plus rela4in)

3strogen epithelial cells mucus protection to microorganisms

"uring pregnancy# thic mucus a gel,lie plug


17/19

5. a$i*a

Tubular# thin,1aled# uite elastic 2$ !0 cm long in co1# mare& 0

$ cm in so1# doe# e1e

uter layer tunica serosa#follo1ed by a smooth muscle layer(circular and longitudinal bers)

/nder progestins in?uence epithelial lining regenerates+


18/19

/. ulva

34ternal genitalia Destibule: common lumen both urinary and

reproductive system (0 2 cm# co1 and mare)

8t -oins 1ith vagina at urethral ori'ce


19/19

5-dsr repr btn2

Documents