Embryology

Question 1

Day 2

Answer 1

Zygote

Question 2

Day 3, enters uterus as a?

Answer 2

Morula

Question 3

Implantation day?

Answer 3

Day 6

Question 4

When does HCG production begin?

Answer 4

After implantation of the blastocyst

Question 5

Embryonic Period

Answer 5

Weeks 3-8; neural tube formed by neuroectoderm closes by week 4; organogenesis; very susceptible to teratogens

Question 6

Heart begins to beat? Limb buds formed?

Answer 6

Week 4

Question 7

When does fetal period begin?

Answer 7

week 8

Question 8

male/ female external genitalia?

Answer 8

week 10

Question 9

process that forms the trilaminar embryonic disc

Answer 9

gastrulation

Question 10

secretes mullerian inhibitory factor to suppress paramesonephric ducts

Answer 10

Sertoli

Question 11

androgens stimulate development of ..

Answer 11

mesonephric ducts (Wolffian)

Question 12

Gubernaculum
Male?
Female?

Answer 12

M - anchors testes within scrotum

F - ovarian ligament + round ligament of uterus

Question 13

Males: evagination of peritoneum forms?

Answer 13

Tunica Vaginalis

Question 14

Urine through belly button of infant

Answer 14

patent urachus

Question 15

outpouching of bladder at apex

Answer 15

vesicourachal diverticulum

Question 16

connects small intestine to skin at the umbilius

Answer 16

persistent yolk sac (vitilline duct)

Question 17

Incomplete obliteration of the vitilline duct

Answer 17

Meckel diverticulum

Question 18

intestines outside fetus

Answer 18

gastroshisis

Question 19

time that has passed since the onset of the last menstruation, which generally or as standard occurs 2 weeks before the actual fertilization.

Answer 19

Gestational age

Question 20

Embyronic period?

Answer 20

Gestational till week 10

embyronal till week 8

Question 21

formation of 75% of identical twins?

Answer 21

Day 4-8 between morula and blastocyst stage

Usually monochorion, diamniotic

Question 22

hernia
male infants, enters inguinal ring lateral to inferior epigastric vessels; persistend processus vaginalis & failure of internal inguinal ring to close

Answer 22

Indirect inguinal

Question 23

hernia, older men; bulges through Hasselbach’s triangle, medial to inferior epigastric vessels to reach external inguinal ring; weakness of transversalis fascia

Answer 23

direct inguinal

Question 24

hernia - women

protrudes through femoral ring, medial to femoral vessels, inferior to the inguinal ligament

Answer 24

Femoral hernia

Question 25

Failure of paramesonephric ducts to fuse results in 2 separate vaginas, cervises, uteran horns

Answer 25

uterus didelphys

Question 26

Contains the uterine vessels

Attaches cervix to lateral walls of the pelvis

Answer 26

Cardinal ligament

Question 27

Contains ovarian vessels

Attaches ovaries to lateral pelvic wall

Answer 27

suspensory ligament of the ovaries

Question 28

Contains the artery of Sampson

from gubernaculum

Answer 28

Round ligament of the urterus

Question 29

Female gubernaculum >

Answer 29

ligament of the ovary and round ligament of the uterus

Question 30

glucoprotein membrane that surrounds the egg

Answer 30

zona pellucida

Question 31

granolsa cells around the primary oocyte

Answer 31

cumulus oophorus

Question 32

egg - 2N, 4C

Answer 32

primary oocyte - all eggs in this state by 6 months

Question 33

State of egg after ovulation?

Answer 33

secondary oocyte 1N, 2C (arrested in metaphase II, to separate sister chromatids at fertilization)