Reproductive Ch 25

dartos muscle

Involuntary contraction of this smooth muscle layer wrinkles and thickens the walls of the scrotum to prevent heat loss.

just before fertilization.

The acrosomal reaction occurs_______.

interstitial

Type of cell in the testes that produces testosterone.

spongy urethra (The spongy urethra passes through the mid-line ventral erectile body, the corpus spongiosum.)

Identify the structure that the red arrow is indicating.

epididymis

Sperm become motile in the___.

true

true or false? Oogenesis takes years to complete.

on the first day on menstruation

The female uterine cycle begins_____.

help cool blood

The function of the pampiniform plexus of veins is to____.

body

The largest macroscopic region of the uterus is its___________.

uterus

The usual site of embryo implantation is the_______.

myometrium

This layer of the uterus contracts during parturition to expel the baby.

It becomes mobile and capable of fertilization

What happens to a sperm as it passes through the highlighted structure?

cervical cancer (The human papillomavirus is the cause of 90% of cervical cancers.)

A cancer that is often caused by a human papilloma virus is __________.

D. superficial inguinal ring

All of the following are located within the spermatic cord except the A. ductus deferens. B. testicular artery. C. pampiniform plexus. D. superficial inguinal ring.

one (One stem cell yields one secondary oocyte and three polar bodies, remnant DNA.)

For each oogonium that undergoes meiosis, how many eggs result?

5 - 2 - 8 - 6 - 4 - 1 - 10 - 7 - 9 - 3

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

E

Identify the letter that indicates the cervix.

A

Identify the letter that indicates the ejaculatory duct.

E

Identify the letter that indicates the female erectile tissue that is homologous to the penis.

B

Identify the letter that indicates the gland that secretes neutralizing mucus prior to ejaculation.

They are both compound tubuloalveolar glands.

In what way are the prostate and the bulbourethral glands similar?

1. Seminiferous tubule 2. Straight tubule 3. Rete testis 4. Efferent ductule 5. Head of epididymis 6. Body of epididymis 7. Tail of epididymis 8. Ductus (vas) deferens

Indicate the pathway of sperm through the tubules that drain the testis by dragging the labels and arranging them in order, from production on the left to storage on the right.

A. fimbriae

The opening of the oviduct is surrounded by these structures. A. fimbriae B. external os C. isthmus D. cardinal ligaments E. internal os

60 / fructose, prostaglandins, substances that enhance sperm motility

The secretion of the seminal vesicles makes up about __________% of the volume of semen, and the secretion contains __________.

are glands that secrete most of the volume of the semen.

The seminal vesicles ___________.

surrounds the tip of the cervix

The vaginal fornix__________.

D. secreting testosterone

Which of the following is NOT a function of sustentocytes? A. conveying nutrients to spermatogenic cells B. phagocytizing cytoplasm shed by spermatids C. secreting inhibin D. secreting testosterone E. secreting testicular fluid

D. all of the above

Which of the following statements regarding an ectopic pregnancy is correct? A. It usually occurs in a uterine tube. B. If it occurs in a uterine tube, it can rupture and lead to internal bleeding that may be life threatening. C. It can occur anywhere in the intraperitoneal region if the zygote does not enter the uterine tube. D. All of the listed responses are correct.

membranous urethra

Which structure is highlighted?

prostatic urethra

Which structure is highlighted?

scrotum

Which structure is highlighted?

spongy urethra

Which structure is highlighted?

testis

Which structure is highlighted?

20 days / they can swim and fertilize anovum through the acrosomal reaction

he journey through the epididymis takes sperm about __________ and by the end of that process, __________.

false

true or false? The ejaculatory ducts are formed by the union of the ductus deferens and urethra.

false

true or false? The spermatic cord is another name for the ductus deferens.

menstrual phase (days 1-5); proliferative phase (days 6-14); secretory phase (days 15-28)

what order of the phases of the uterine cycle occur?

testis

which organ is highlighted?

D

Identify the letter that indicates the organ that serves as common passageway for semen and urine in men.

A

Identify the letter that indicates the organ where ectopic pregnancies commonly occur.

C

Identify the letter that indicates the organ where fertilization normally occurs.

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.

C

Identify the letter that indicates the site of sperm maturation and storage

D

Identify the letter that indicates the tissue layer that is shed during menstruation.

to help cool down arterial blood before it reaches the testis

What is a function of the highlighted structure?

estrogen and progesterone

What is secreted by the highlighted structure?

They are the site of sperm manufacture.

What is the function of the seminiferous tubules?

It prevents escape of membrane antigens of differentiating sperm through the basal lamina and into the blood, where they would activate the immune system.

What is the importance of the blood-testis barrier?

is a protective shell around the oocyte that sperm must penetrate for fertilization to occur.

The zone pellucida__________.

ductus deferens

Which structure is highlighted?

ejaculatory duct

Which structure is highlighted?

Testicular artery

All of the following are adaptations for keeping the testes cool except the______.

A

Identify the letter that indicates the "neck" of the uterus.

false

true or false? Seminiferous tubules are the site of sperm storage.