Anatomy #19
What is the importance of the blood-testis barrier?
It prevents escape of membrane antigens of differentiating sperm through the basal lamina and into the blood, where they would activate the immune system.
Identify the letter that indicates the "neck" of the uterus.
A
Identify the letter that indicates the ejaculatory duct.
A
Identify the letter that indicates the organ where ectopic pregnancies commonly occur.
A
Which of the following statements regarding an ectopic pregnancy is correct?
All of the listed responses are correct.
Identify the letter that indicates the gland that secretes neutralizing mucus prior to ejaculation.
B
Identify the letter that indicates the organ which is commonly referred to as the birth canal.
B
Identify the letter that indicates the region of the uterus known as the fundus.
B
Identify the letter that indicates the organ where fertilization normally occurs.
C
Sperm become motile in the
epididymis.
This layer of the uterus contracts during parturition to expel the baby.
myometrium
Identify the letter that indicates the organ that serves as common passageway for semen and urine in men.
D
Identify the letter that indicates the tissue layer that is shed during menstruation.
D
Identify the letter that indicates the cervix.
E
Identify the letter that indicates the female erectile tissue that is homologous to the penis.
E
Seminiferous tubules are the site of sperm storage.
False
The ejaculatory ducts are formed by the union of the ductus deferens and urethra.
False
The spermatic cord is another name for the ductus deferens.
False
A cancer that is often caused by a human papilloma virus is __________.
cervical cancer
Involuntary contraction of this smooth muscle layer wrinkles and thickens the walls of the scrotum to prevent heat loss.
dartos muscle
The opening of the oviduct is surrounded by these structures.
fimbriae
The function of the pampiniform plexus of veins is to
help cool blood.
Type of cell in the testes that produces testosterone.
interstitial
The zona pellucida
is a protective shell around the oocyte that sperm must penetrate for fertilization to occur.
The acrosomal reaction occurs
just before fertilization.
The phases of the uterine cycle occur in the following order.
menstrual phase (days 1-5); proliferative phase (days 6-14); secretory phase (days 15-28)
All of the following are located within the spermatic cord except the
superficial inguinal ring.
The vaginal fornix
surrounds the tip of the cervix.
All of the following are adaptations for keeping the testes cool except the
testicular artery.
The usual site of embryo implantation is the
uterus.
The largest macroscopic region of the uterus is its
body.
The journey through the epididymis takes sperm about __________ and by the end of that process, __________.
20 days / they can swim and fertilize anovum through the acrosomal reaction
Identify the correct list of reproductive organs that spermatozoa pass through after they are produced in seminiferous tubules, ending just before they exit the body at the external urethral orifice. Use this numbered key to make your choice. 1. ampulla of ductus deferens 2. testis 3. spongy urethra 4. ductus deferens 5. straight tubule 6. duct of the epididymis 7. prostatic urethra 8. efferent ductile 9. membranous urethra 10. ejaculatory duct
5 - 2 - 8 - 6 - 4 - 1 - 10 - 7 - 9 - 3
The secretion of the seminal vesicles makes up about __________% of the volume of semen, and the secretion contains __________.
60 / fructose, prostaglandins, substances that enhance sperm motility
Identify the letter that indicates the site of sperm maturation and storage.
C
In what way are the prostate and the bulbourethral glands similar?
They are both compound tubuloalveolar glands.
What is the function of the seminiferous tubules?
They are the site of sperm manufacture.
Oogenesis takes years to complete.
True
The seminal vesicles
are glands that secrete most of the volume of the semen.
The female uterine cycle begins
on the first day of menstruation.
Which of the following is NOT a function of sustentocytes?
secreting testosterone
