Lesson 1C Flashcards
What are the pelvic structures of the uterus? (11)
- Fundus
- Body
- Cervix
- Endo canal
- Myometrium
- Endometrium
- Serosa
- Internal os
- External os
- Vagina
- Introitus
What are the segments of the fallopian tubes? (4)
- Interstitial
- Isthmus
- Ampulla
- Infundibulum
What shape is the uterus?
Pear shaped
What does the uterus receive?
The embryo
What does the uterus do?
House and protects the embryo during pregnancy
What 3 segments does the uterus split into?
- Fundus
- Body
- Cervix
What 2 openings does the cervix have?
- Internal os
2. External os
Where is the internal os located?
Closest to the body of the uterus
What does the internal os do?
Communicates with the endometrial canal
Where is the external os located?
Closest to the vagina
What does the external os do?
Communicates with the vaginal vault
What are the pelvic ligaments? (6)
- Round ligament
- Cardinal ligament
- Uterosacral ligament
- Ovarian ligament
- Ovarian suspensory ligament
- Broad ligament
What do the pelvic ligaments do?
Holds everything in place
What does the uterosacral ligament do?
Supports the uterus
What does the ovarian suspensory ligament do?
Supports the ovaries
What does the broad ligament do?
Drapes over the uterus and the fallopian tubes
What are the 3 layers of the uterine wall?
- Tunica serosa / perimetrium
- Tunica muscularis / myometrium
- Tunica mucosa / endometrium
What kind of tissue is the tunica serosa?
Connective tissue
What is the tunica muscularis capable of?
Very strong contractions to expel a fetus at term
What does the tunica mucosa do?
It thickens and becomes more vascular to prepare to support a fertilized egg
- this occurs approximately every 28 days
What happens if the egg is not fertilized in the endometrium?
It will simply pass through the uterus
- bleed out the vagina
Why does the tunica mucosa layer shed if not fertilized?
Without the hormonal reinforcement of a pregnancy, the vessels of the endometrium will constrict that leads to necrosis and the lining will be shed
What is shedding of the endometrium layer called?
Meses
What is another word for an egg?
Oocyte