Reproduction Flashcards
The approximate area between the anus and the clitoris in the female is the
perineum
Reproduction involves several processes including those conducted by specialized sex cells called
gametes
The union of a sperm nucleus and an ovum nucleus resulting in the formation of a zygote is referred to as
fertilization
Normally, fertilization take place in the upper third of the
uterine tubes
The male sex hormone is produced where?
in the interstitial cells of the testes
The major portion of the volume of semen is contributed by the
seminal vesicles
The structures that draw an ovulated oocyte into the female duct system are
cilia
The male homologue of the female clitoris is
the penis
What does not add a secretion that makes a major contribution to semen?
vas deferens
The corpus luteum is formed at the site of
ovulation
Secretion of progesterone stimulates ________
preparation of the mammary glands for lactation
Whats not true about sperm
they are sluggish in an alkaline environment.
Erection of the penis results from _____
a parasympathetic reflex
What is not a function of the vagina?
serves as a passageway for the primary oocyte
Normally menstruation occurs when __________
blood levels of estrogen and progesterone decrease
Which hormone is absolutely necessary for ovulation to occur
LH
A boy who has not passed through puberty sustains an injury to his anterior pituitary such that FSH is no longer released, but LH is normal. After he grows to maturity, one would expect that he would _________
be sterile
A low secretion of luteinizing hormone (LH) in the normal male adult would cause _____
decreased testosterone secretion
Which layer changes in response to ovarian hormone cycles?
stratum functionalis
What implants into the endometrium 6 - 7 days after ovulation?
blastocyst
(True or False)
In older males, enlargement of the prostate gland may obstruct the flow of urine.
true
(True or False)
Ovulation is initiated by a sharp rise in FSH secretion.
false
(True or False)
Progesterone and estrogen are secreted by the placenta by the end of the third month of pregnancy.
true
(True or False)
The disintegration of the corpus lutuem (about 10 days after ovulation) is prevented by the human chorionic gonadotropin hormone (hCG) produced by the embryo.
true
(True or False)
It is necessary for the testes to be kept 3 degrees Celsius higher than body temperature.
false
(True or False)
The soft mucosal lining of the uterus is the myometrium.
false
(True or False)
A scrotal muscle that contracts in response to cold environmental temperature is the cremaster muscle.
true
(True or False)
The secretions of the bulbourethral glands neutralize traces of acidic urine in the urethra and serve as a lubricant during sexual intercourse.
true
