Final Exam Review Pt.3
Sexual Reproduction entails the union of two gonads to form a zygote - ANS-False
The presence of the Y chromosome guarantees the development of male secondary
sex organs - ANS-True
The mechanism that keeps the testes cooler than the body's core temperature is called
descent of the testes - ANS-False
The scrotum contains the testes and spermatic cords - ANS-True
sperm travels along the ductus deferens before reaching the spermatic cord -
ANS-False
Sustentacular cells secrete inhibin, which regulates the rate of sperm production -
ANS-True
Testosterone stimulates development of the secondary sex characteristics,
spermatogenesis, and libido - ANS-True
Erectile dysfunction prevents ejaculation in most cases - ANS-False
at early puberty, follicle stimulating hormone (FSH) and luteinizing hormone (LH)
stimulate enlargement of the testes - ANS-True
Spermiogenesis is the last stage of meiosis - ANS-false
sperm make up just 10% of semen volume - ANS-True
Only germ cells undergo meiosis, which produces four haploid cells with 23
chromosomes each - ANS-True
Sympathetic nerve fibers trigger the secretion of nitric oxide, which dilates the deep
arteries allowing blood to engorge the penis - ANS-False
The first haploid stage of spermatogenesis is prophase II - ANS-False
, myotonia of skeletal muscles is characteristic of the excitement phase and refractory
period - ANS-False
___ is/are generally accepted as a secondary sex characteristic
A.
The enlargement of the breasts
B.
the presence of testes
C.
the prostrate gland
D.
the vagina
E.
the uterus - ANS-The enlargement of the breasts
Which of the following are primary sex organs?
A.
ova
B.
uterine tubes
C.
breasts
D.
ovaries
E.
scent glands - ANS-ovaries
Which of the following is a secondary sex organ?
A.
testis
B.
ovary
C.
vagina
D.
facial hair
E.
distribution of body fat - ANS-vagina
Gonads begin to develop
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