Embryology Quiz 1 Flashcards
(26 cards)
What are the 4 tissue classes?
Epithelial, Connective, Muscular, Nervous
How many cell types are in the body?
Around 200
Histotech: name function of and steps associated with the following:
Aldehydes, Alcohol and xylene, wax, xylene, hematoxylin/eosin
Fixing (N-bridges), Processing (water out, alcohol out), Staining (wax out, blue/pink)
what makes up the ground substance?
Extracellular matrix, water, fibrous proteins
3 layers, 4 free surface, and 3 surface modifications of epithelia
simple, stratified, pseudo-stratified
cuboidal, columnar, squamous, transitional
ciliated, keratinized, microvilli
What is metaplasia?
Any change - normal or abnormal
What is Hypertrophy?
Getting huge - cells enlarge without adding cells
What is hyperplasia?
Addition of cells
Neoplasia
Bad.
Cancerous. Tumor.
Ampulla, Blastomere, Blastocyst, Corona Radiata
Bend in fallopian tube ideal fertilization site, individual cells up to 16, embeds endometrial lining, lining of Oocyte
Zona Pellucida
Glycoprotein shell
Acrosome
Tip of sperm - type of lysosome
Zona Rxn
Ca+ mediated rxn preventing polyspermy
2nd Meiotic Division
After fertilization
Pronuclei
1n to 2n (both male and female pronuclei)
What occurs 30 hours post-fertilization?
Furrow appears signaling first mitotic division
What does it mean when the embryo has 16 blastomeres?
It’s called a Morula
What’s the cavity in a Blastocyst called?
Primitive Yolk sac (just water)
Name 3 parts of the Blastocyst
The yolk sac, trophoblast, embryoblast
2 Parts of the embryoblast?
How do they differ structurally?
Epiblast, Hypoblast
Columnar, Cuboidal
Trophoblast differentiates into what two parts?
Syncitiotrophoblast and cytotrophoblast
Where is the extraembryonic mesoderm?
Between the trophoblast and hypoblast
Where does the extraembryonic (chorionic) cavity come from?
Extraembryonic mesodermal proliferation
3 Layers of the Chorion?
What does it produce?
Extraembryonic mesoderm, cytotrophoblast, synciciotrophoblast.
hCG
