Flashcards in Lecture 4- Embryology and Puberty Deck (46):
What is the most common type of bony pelvis?
Where do the majority of structures from the GU tract come from?
Mesoderm (middle layer)
During what week do the urogenital ridges form from the mesoderm?
What do the urogenital ridges form?
Fallopian tubes, uterus, and upper portion of the vagina
What do the external genitalia develop from?
Genital swellings in the pelvic region
By what week are gonads structurally male or female?
What are the two pairs of genital ducts?
In the female, which ducts form the fallopian tubes, uterus and upper 1/3 of the vagina?
What structure forms the lower portion of the vagina?
What forms the vaginal plate?
Paramesonephric (mullerian) ducts merge with the urogenital sinus
What is formed from the caudal end of the hindgut?
In females, what forms into the clitoris, the unfused urogenital folds from the labia minora and the labioscrotal swellings.
These all make up what:
labia majora, labia minora, mons pubis, clitoris, vestibule and the ducts of the Skene and Bartholin glands which open into the vestibule.
What is the the area between the thighs and the buttocks extending from the coccyx to the pubis.
What type cells line the vagina?
stratified squamous epithelium
What is visible inside the vagina?
External cervical os
Which ligament contains the arteries, veins, and ureters?
Where is the area where the fallopian (uterine) tubes enter?
what are the three layers of the uterus?
Inner- endometrium (what sheds)
What are the three portions of the fallopian tubes?
Infundibulum (have fimbriae)
In fallopian tubes, epithelial lining is _______ to facilitate transport.
With Mullerian ageneisis, there is an absence of what?
Uterus, can also have vaginal abnormalities
What occurs when inferior parts of the mullerian ducts do not fuse?
Double uterus, uterine didelphys.
Double or single vagina
Reminants of the menophric ducts may persist and manifest as what?
Gartner cysts- located along vaginal wall or within broad ligament
When do adrenarchy occur?
At approximately 6-8 years of age.
What is the word for breast development?
What is the sequence of puberty?
Menarche and ovulation
What is the onset of sexual characteristics prior to age 6 in African-Americans and age 7 in Caucasians.
What are some causes of GnRH dependent precocious puberty?
CNS infection/ inflammation
What are some GnRH independent causes of precocious puberty?
Exogenous sex steroids administration
Simple Ovarian cyst
McCune- Albright Syndrome
What is the most common cause of delayed puberty with an elevated FSH?
When FSH + LH is <10 what type of delayed puberty is indicated?
What is the most common cause of delayed puberty?
What is a syndrome with no GnRH secretion?
What is the most common tumor associated with delayed puberty?
What are 3 anatomic causes of abnormal pubertal development?
Transverse vaginal septum
What is where menstruation occurs at the normal time but blood can't exit due to obstruction.
Which ducts develop into the male epididymis, ductus defrens and ejaculatory ducts?
WHich ducts disappear in the female embryo?
What ducts form the fallopian tubes, uterus, and upper portions of the vagina?
What gives rise to the lower parts of the vagina?
The vaginal plate
What is the cervical opening to the vagina?
What is congenital absence of the ovaries and what syndrome is it common in?
Ovarian dysgensis; Turner syndrome
What is the term for a double uterus?
What type uterus results when lack of fusion is limited to the superior portion of the uterine body?