Male/Female Histo Lecture Flashcards
Stigma
Region on ovarian surface where the follicle is going to rupture
When does the primary oocyte become a secondary oocyte?
When the cumulus oophorus breaks and it gets halted in meiosis 2
Peg cells
Interspersed with the ciliated cells of the oviduct
They are secretory
Secrete nutrients for the ova
Hatching of the embryo
Between the morula and blastocyst stage
Morula is getting too big to be enclosed
Also functionally important because you need the sticky surface of the embryo to latch onto the endometrium
2 layers of the trophoblast
Syncytiotrophoblast
Cytotrophoblast
Syncytiotrophoblast
Multi-nucleated protoplasmic mass without cell boundaries
Highly invasive (produces enzymes that erode maternal tissue)
Breaks through maternal vessels
Lacunae and vessels in direct contact
Cytotrophoblast
Important in chorionic villi growth during development of placenta
Proliferates and forms primary chorionic villi (future fetal blood vessels)
3 things in the diffusion barrier
Syncytiotrophoblast layer
Connective tissue
Fetal blood vessel endothelium
What happens after the 5th month of pregnancy that you can see under the light microscope?
The cytotrophoblast appears to generate (really its just very thin)
Mediastinum testis
Hilum of the testis where things enter and exit
Where sperm exit to the epididymis
What is the
1. Parenchyma
2. Stroma
of the testis
- Seminferous tubules (exocrine)
2. Leydig cells (endocrine)
Where is the blood-testes barrier
Below the spermatocytes
Between the mitosis and meiosis steps
Sertoli cell
Nurse cells
More columnar
In touch with the capsule and spermatogenic cells
Leydig cells
In the interstitium Endocrine (make testosterone) Lipid filled Eccentric ueclus Prominent nucleoli (1 or 2) Proximity to capillaries
Epididymis
Continuous duct
Storage and maturation
Fluid is resorbed
Spermatozoa mature, gain motility and gain fertilizing capacity
Passage takes about 12 days
Duct is surrounded by CT and smooth muscle
