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male reproductive system

Terms in this set (26)

the diploid number of chromosomes in a human is 46 therefore, the number of chromosomes in a primary spermatocyte is
46
the dartos cremaster muscles are important to the integrity of the male reproductive system. which of the following best describes the role they play?
they regulate the temperature of the testes
the ability of sperm cells to move along the ductus deferens is due to
peristaltic contractions
which of the following glands are responsible for producing 70% of semen volume?
seminal vesicles
which of the following hormones controls the release of anterior pituitary gonadotropins?
GnRH
which of the following female structures is homologous to the male scrotum?
labia majora
the cells that produce testosterone in the testes are called
interstitial endocrine cells ( leydig's cells)
Erection of the penis results from
a parasympathetic reflex that promotes the release of nitric oxide
which of the following choices below is not a function of testosterone?
stimulates the hypothalamus- pituitary- gonadal (HPG) axis
which male hormone provides negative feedback for the secretion of FSH
Inhibin
the hypothalamic- pituitary gonadal axis
involves FSH and LH release from anterior pituitary
which of the following statements about spermatogeneis is NOT true
Each spermatid forms two sperm
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 unable to produce viable sperm
a low secretion of luteinizing hormone in the normal male would cause
decreased testosterone secretion
the __________ ______ vessel function to assist in cooling the testis
pampiniform plexus
the erectile tissue surrounding the urethra is the
corpus spongiosum
the ___________ of the testis nourish the newly formed sperm cells
sustentocytes
the spermatic cord encloses all of the following structures except
seminal glands
The testis are housed in the _______, which
scrotum, lowers sperm development temperature
the ______ urethra runs through the penis and opens to the outside at the urethral orifice
spongy
Which of the following components in semen stimulates the uterus to contract in reserve peristalsis?
prostaglandins
in the male sexual response, what is the resolution?
a period of muscular and psychological relaxation
what structure is cut during a vasectomy
ductus (vas) deferens
how many chromosomes would you have if you were haploid
23
how many sperm are produced at the end of one meiotic cycle
4
do males have a pubis symphysis
yes
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