Chapter 2 Embryonic Development of the Female Genital System Flashcards
Sac-like structure that lies below the chorion and develops from the hindgut
Allantois
Blockage or absence of a structure
Atretic
Fold of peritoneum that connects the uterus to the pelvis
Broad Ligament
Formation of an embryo
Embryogenesis
Cavity that is part of the development of the digestive and reproductive organs
Cloaca
Normal number of paired chormosomes
Diploid
Structure that appears at approx 5 weeks gestation and becomes either ovaries or testes
Gonadal Ridges
Accumulation of secreted fluid resulting in distention of the uterus and vagina because of obstruction
Hydrometrocolpos
Urine collection in the kidneys because of distal obstruction
Hydronephrosis
Large, sometimes tortuous, ureter because of distal blockage
Hydroureter
Connection between the mesonephros and the cloaca
Mesonephric ducts
Second stage of kidney development
Mesonephros
Section of the uterine broad ligament that covers the ovary
Mesovarium
Paired ducts that become the oviducts, uterus, cervix, and upper vagina
Mullerian ducts (paramesonephric ducts)
Oocytes
female germ cells
Oogonia
Immature oocytes
Precursor of germ cells, become oocytes or spermatozoa in the adult
Primordial germ cells
Primary or first kidney, which develops in the embryo
Pronephros
Pertaining to the urinary and genital system
Urogential
A method used to classify the embryo that places the embryo into categories depending on age, size, and morphologic characteristics is called
Carnegie stages
Cloacal anomalies can result in
Hydrometrocolpos
An ultrasound exam of a patient with hematocolpos should include imaging of the
Kidneys
The most common mass lesions in neonates are of
Renal origin
The pre-embryonic phase, AKA the first Carnegie stage, lasts into the
3rd week
If a male gamete that is capable of contributing either an X or Y chromosome contributes an X chromosome to the ovum the result is
A female zygote
The embryonic phase begins in the 4th week and extends into the
8th week
Diploid chromosomes are a result of fertilization and result in a count of
46 chromosomes
What cells produce a gender appearance
Primordial germ cells
The genital or gonadal ridges are a forerunner of the
Female ovaries and male testes
The vaginal fornices surround the end of the
Cervix
Gender (sex) is determined at approximately days
44-48
Mullerian ducts fuse to develop the uterus and
Fallopian tubes
The normal male chromosomal configuration is
46XY
External development of genitalia is similar in both sexes until approx what week
9th
How does the fully developed fallopain tube lie in the abdominal cavity
Horizontal
Between puberty and menopause approx how many fertile ova are produced
300-400
Determination of chromosomal gender or sex occurs at the time of
Fertilization
What becomes the genital tubercle in both genders
Primordial Phallus
What systems develop in tandem in the embryo and are still closely associated in the adult
Reproductive and Urinary
What chromosome does the female gamete contribute
X
Carnegie stage 20 correlates with day 49 for which gonadal gender
Female
Carnegie stage 18 correlates with day 44 for which gonadal gender
Male
