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79 terms

Reproductive System

STUDY
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It is necessary for the testes to be kept below body temperature.
True
The Pap smear is a test to detect cancerous changes in cells of the cervix.
True
The adenohypophyseal hormone that triggers ovulation is estrogen.
False
The female hormone most responsible for triggering ovulation is FSH.
False
The male urethra serves the urinary system only.
False
Both tetrads and crossovers are seen during meiosis.
True
Failure to attain erection is called impotence.
True
Ovulation occurs near the end of the ovarian cycle.
False
The corpus luteum secretes progesterone only.
False
Female orgasm is required for conception.
False
The primary function of the testes is to produce testosterone.
False
The prostate atrophies as a man ages, and it usually causes no health problems.
False
The stage in meiosis where chromosomal exchange takes place is telophase.
False
The diamond-shaped area between the coccyx, pubic arch, and ischial tuberosities in the female is the vulva.
False
The soft mucosal lining of the uterus is the endometrium.
true
A scrotal muscle that contracts in response to cold environmental temperature is the cremaster.
true
The secretions of the bulbourethral glands neutralize traces of acidic urine in the urethra and serve as a lubricant during sexual intercourse.
True
The zona pellucida is formed as the follicle becomes a secondary follicle.
true
The molecule that enhances the ability of testosterone to promote spermatogenesis is inhibin.
false
The hormone oxytocin combines with enzymes in semen to enhance sperm motility.
False
When a couple is having difficulty conceiving a child, it is necessary to investigate the sperm of the male.
true
The amount of testosterone and sperm produced by the testes is dependent on the influence of FSH alone.
false
Ovarian follicles contain mature eggs.
false
Sexually transmitted diseases are the most important cause of reproductive disorders.
true
Pain during ovulation is called dysmenorrhea.
false
A human egg or sperm contains 23 pairs of chromosomes.
True
The dartos and cremaster muscles are important to the integrity of the male reproductive system. Which of the following is true about the role they play?
They regulate the temperature of the testes
Which of the following constitutes the female counterpart of the male scrotum?
labia majora
Human egg and sperm are similar in that ________.
they have the same number of chromosomes
The constancy of the chromosome number from one cell generation to the next is maintained through ________.
Meiosis
Fertilization generally occurs in the ________.
fallopian tubes
Spermiogenesis involves _.
the formation of a functional sperm by the stripping away of superfluous cytoplasm
All of the following can be considered male secondary sex characteristics except the ________.
development of testes as opposed to ovaries
In humans, separation of the cells at the two-cell state following fertilization may lead to the production of twins, which in this case would be ________.
Identical
Characteristics of the mature sperm include ________.
the presence of Y chromosomes in approximately half the sperm
Functions of testosterone include ________.
facilitation of muscle and skeletal growth in mass
Effects of estrogen include ________.
growth of the breasts at puberty
The ability of sperm cells to move along the ductus deferens is due to ________.
peristaltic contractions
Secretion of progesterone stimulates ________.
preparation of the mammary glands for lactation
Which of the following statements about sperm is not true?
The sperm midpiece consists of Golgi bodies spiraled tightly around the contractile filaments of the tail
The cells that produce testosterone in the testis are called ________.
interstitial cells
The testicular cells that construct the blood-testis barrier are the ________.
sustentacular cells
Erection of the penis results from ________.
a parasympathetic reflex
Which is not a part of the proliferative phase of the female menstrual cycle?
corpus luteum
Select the correct statement about the testis.
The testis is surrounded by the tunica vaginalis
Select the correct statement about male sexual response.
Erection is the result of vascular spaces in the erectile tissues filling with blood
The ovaries ________.
are surrounded by the tunica albuginea
Select the correct statement about mammary glands.
The breasts of most nonpregnant females are composed of fat and connective tissue
The ability of a male to ejaculate is due to the action of ________.
the bulbospongiosus muscles
During the secretory phase of the menstrual cycle ________.
progesterone levels are at their highest
Select the correct statement about the uterine cycle.
If fertilization occurs, the corpus luteum is maintained by a hormone secreted by the developing embryo
What mechanism divides the testes into lobules?
septal extensions of the tunica albuginea
Which of the following statements is true concerning the mammary glands of both males and females?
The mammary glands are modified sweat glands that are actually part of the integumentary system
Normally menstruation occurs when ________.
blood levels of estrogen and progesterone decrease
The basic difference between spermatogenesis and oogenesis is that ________.
in oogenesis, one mature ovum is produced, and in spermatogenesis four mature sperm are produced from the parent cell
Occasionally three polar bodies are found clinging to the mature ovum. One came from an unequal division of the ovum, but from where did the other two arise?
The first polar body has also divided to produce two polar bodies
Which of the following will occur after ovulation?
endometrium enters its secretory phase
The seminal vesicles ________.
produce a yellowish fluid rich in fructose
Spermatogenesis ________.
involves a kind of cell division limited to the gametes
The most important risk for testicular cancer in young males is ________.
nondescent of the testes
The brain-testicular axis ________.
involves FSH and LH release
Select the correct statement about testosterone control.
GnRh from the hypothalamus causes FSH and LH release from the anterior pituitary
Which of the following is a correct statement about uterine tubes?
The infundibulum is the funnel-shaped region near the ovary
Select the correct statement about the hormonal events of the ovarian cycle.
High estrogen levels result in a surge of LH release
Which of these statements about sexually transmitted diseases is false?
Syphilis is caused by a virus that may lead to death if untreated
Which of the following statements about spermatogenesis 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 sterile
Which of the following statements about the female reproductive process is not true?
Rebuilding the endometrium is under the control of prolactin
A low secretion of luteinizing hormone (LH) in the normal male adult would cause ________.
decreased testosterone secretion
All of the following statements referring to the uterine cycle are true except ________.
FSH and LH directly promote development of the uterine endometrium
Which of the following glands are responsible for 60% of the synthesis of semen?
seminal vesicles
Which of the following phases or processes in the monthly reproductive cycle of the female occur simultaneously?
regression of the corpus luteum and a decrease in ovarian progesterone secretion
The duct system of the male reproductive system includes ________.
ductus deferens, a duct that runs from the epididymis up into the pelvic cavity
An ovulating oocyte is actually activated by hormones about ________ days before ovulation.
110
Prostate cancer is _______.
sometimes a slow-growing cancer that may never represent a threat to the patient
Which of the following hormones controls the release of anterior pituitary gonadotropins?
GnRH
The primary function of the uterus is to ________.
receive, retain, and nourish a fertilized ovum
The corpus luteum is ________.
the ruptured follicle following the ejection of an oocyte from the ovary
The structures that receive the ovulated oocyte, providing a site for fertilization, are called ________.
fallopian tubes