watch?v=lutjft-8s5k

Female Reproductive System Uterus womb https://www.youtube.com/watch?v=LUtjft-8s5k Functions • Sperm is transported from the vagina to the oviduct...
Author: Lewis Taylor
82 downloads 3 Views 4MB Size
Female Reproductive System Uterus womb

https://www.youtube.com/watch?v=LUtjft-8s5k

Functions •

Sperm is transported from the vagina to the oviduct during heat and the fetus is expelled at term by uterine muscle contractions; • Sperm capacitation, which is essential for fertilization, occurs when sperm pass through uterine secretions; • Fertilized ovum (embryos) are provided nourishment before implantation by the uterine secretions; • Prostaglandins are produced by the uterus which can destroy the function of the corpus luteum of the ovary.

Female Reproductive System : internal genitalia uterus

Female Reproductive System : internal genitalia uterus The cervix is a thick walled organ forming a connection between the vagina and uterus. This forms a 360º blind-ended pocket completely around the cervical opening. This pocket is referred to as the fornix. The cervix opens anteriorly into the uterine body. About an inch long, the body of the uterus serves as a connection between the two uterine horns and the cervix. The uterine body is the site where semen should be deposited during artificial insemination. From the uterine body on, the reproductive tract separates and all further structures come in pairs

Uterus configuration duplex: rat, rabbit, guinea pig

bipartite: mare

bicornuale: bitch sow, cow, doe, ewe

simple: primate, human

Uterus configuration

Uterus configuration

Development of urogenital system

Development of urogenital system

Rabbit uterus

The female rabbit has a bicornuate duplex uterus. This has two separate uterine horns and no uterine body. Each horn has its own cervix, and the two cervices open into a single vagina.

Cow uterus

bicornuate uterus

characterized by a small uterine body just anterior to the cervical canal and two long uterine horns. Fusion of the uterine horns of the cow and ewe near the uterine body gives the impression of a larger uterine body than actually exists and has exists and has sometimes resulted in their uteri being classified bipartite

Cow uterus

abdominal cavity

Sow uterus

bicornuate uterus

The sow has longer uterine horns than the cow,and they may slighyly convoluted.

Sow uterus

Horns look like intestines

Sow uterus

Pre-pubertal

pubertal

Mare uterus

Biparitite uterus There is a prominent uterine body anterior to the cervical cannal and two uterine horns thet are not as long and distinct as in the bicornuate type.During pregnancy in mares,the fetal body extends into both horns,whereas the fetuses do not occupy the uterine body in the bicornate types.

Cow uterus

Mare uterus

the mares' uterus is approximately "T" shaped; not "Y" shaped as in cattle

Cow uterus

Mare uterus

Horns: ventral concavity Horns: dorsal concavity

Human uterus

simple uterus The simple uterus, a pearshaped body with no uterine horns, is characteristic of humans and other primates

Uterus: horns

Dorsal face

intercornual ligament Free margin

mesometrial margin Ventral face APEX

BASE

cow

Uterus: body Ventral face

Dorsal face Right margin

Left margin

cow

Uterus: fondus

human

Uterus: cervix

Uterus: ligaments

Broad ligament

Broad ligament

Uterus: broad ligaments

Lateral face

Dorsal margin

Broad ligament Caudal margin

Medial face

Ventral margin

MEDIAL FACE

Cranial margin Ventral margin

Uterus: ligaments

Uterus: ligaments

Uterus: cavity

Uterus: cavity

horns

body cervix

body cervix

sow

Uterus: cavity

ostium septum body

cervix

cow

Uterus: cavity

Horns (ventral concavity)

cow caruncles

Uterine septum

Uterus: cavity

caruncles Uterine sptum

sheep

Uterus: cavity

The intercornual ligament is insignificant in mares

mare

Uterus: cervix

Uterus: cervix

Canal cervical

cow

Fornice

Canal cervical

Uterus: cervix

cow

CERVIX Internal uterineostium Portio vaginalis

Internal ostium

External ostium fornix

Uterus: cervix

cow

The cervix is a thick walled organ forming a connection between the vagina and uterus. This forms a 360º blind-ended pocket completely around the cervical opening. This pocket is referred to as the fornix. The interior of the cervix contains three to four annular rings or folds that facilitate the main function of the cervix, which is to protect the uterus from the external environment. The cervix opens anteriorly into the uterine body. About an inch long, the body of the uterus serves as a connection between the two uterine horns and the cervix.

Uterus: cervix

cow

Fornix

Uterus: cervix

Uterus: cervix

cervix

sheep

Uterus: cervix

mare

Uterus: cervix

sow

Uterus: cervix

body

*

body

* Cervical fold **

sow