Lecture 8 Flashcards
Gonads are derived from:
Intermediate mesoderm
Specialized collecting tube in the developing human female that runs from the ovary to the cloaca:
Paramesonephric duct
Serial homolog of scrotal sac:
Skin
Serial homolog of dartos muscle:
Superficial fascia
Serial homolog of external spermatic fascia:
External oblique
Serial homolog of cremaster muscle:
Internal oblique
Serial homolog of internal spermatic fascia:
Transversus abdominus
Serial homolog of tunica vaginalis:
Coelom + peritoneum
Anchors testis to scrotal wall:
Gubernaculum
A very narrow slit that guards against herniation to the gut tube:
Inguinal canal
Spermatic cord loops _____ to the attachment of the ureter of the bladder
Ventral (in front of)
How many pouches do females have?
2
How many pouches do males have?
1
2 pouches in the female:
Vesicouterine and Rectouterine
Pouch in the male:
Rectovesicle
Specialized erectile tissue develops from:
Mesoderm
Erectile tissue closer to midline:
Right and left BULB
Erectile tissue more laterally:
Right and left CRUS
Subdivides the cloaca in a rectum and a bladder:
Urogenital diaphragm
In the male, right and left bulbs fuse in the midline to form:
Corpora spongiosum
In the male, right and left crura form:
Corpora cavernosa
In the female, the bulbs of the vestibule become:
Labia minora
Ovaries are derived from:
Intermediate mesoderm
Testes are derived from:
Intermediate mesoderm
Ureter is derived from:
Endoderm
Bladder is subdivision of:
Hindgut
Testes/gonads are:
Retroperitoneal
Coelomic space on right and left side of scrotal sac is:
Primarily retroperitoneal
Ovaries are secondarily:
Intraperitoneal
What passes through inguinal canal?
Spermatic cord, blood vessels out and in
What tube gives rise to the uterus?
Paramesonephric duct
Paramesonephric duct becomes:
Fallopian tubes
Pouch between bladder and uterus:
Vesicouterine
Pouch between rectum and uterus:
Rectouterine
Surrounds the urethra and makes up the head or glans of the penis:
Corpora spongiosum
In the female, right and left crus becomes:
Labia majora
Inner perineal muscle in both male and female:
Bulbospongiosus
Outer perineal muscle in both male and female:
Ischiocavernosus
Perineal muscle that connects to Rafae (alba):
Ischiocavernosus
Go through meiosis and make sperm cells:
Spermatogenic cells
Keep spermatogenic cells alive:
Sustentacular cells
Tip of sperm used to penetrate egg:
Acrosomal cap
Prostate gland secretes:
Fructose
Cells that secrete testosterone:
Interstitial cells
Into a tube:
Exocrine
Into a blood vessel:
Endocrine
Erection has a ______ function
Parasympathetic
Ejaculation has a ______ function
Sympathetic
Orgasm has a ________ function
Sympathetic and parasympathetic
Ovaries start:
Retroperitoneal
What part of the follicle in a female secretes estrogen and progesterone?
Corpus luteum
1st step of uterine cycle
Hypothalamus releases GnRH that stimulates anterior pituitary gland to release FSH and LH
What does the hypothalamus release as the first step?
Gonadotropin-releasing hormone
2nd step of uterine cycle
FSH stimulates maturation of follicle
3rd step of uterine cycle
Follicle produces estrogen;
Builds uterine wall, turns off FSH
Where is the biggest spike of LH in the whole cycle?
4th step
4th step of uterine cycle
High levels of estrogen stimulates secretion of LH
What step of uterine cycle does the egg leave the fallopian tube and become exposed for fertilization?
4th step
Ovulation is accompanied by:
LH spike
5th step of uterine cycle
Corpus luteum secretes estrogen and progesterone; turns off LH
6th step of uterine cycle
Estrogen and progesterone levels drop as corpus luteum degenerates to corpus albicans
7th step of uterine cycle
Break down of endometrium; tissue and blood loss is known as menstruation
8th step of uterine cycle
Low LH causes secretion of FSH again; cycle repeats itself
What hormone does the placenta secrete?
Human Chorionic Gonadotropin
What inhibits the corpus luteum from wearing out?
hCG
