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WorksheetsReproductive Unit Quiz A
Total questions: 18
Worksheet time: 36mins
The oral contraceptive pill, informally called "the pill," contains an estrogen and progesterone, or a synthetic mimic of this hormone. The combination of these two hormones, taken in the pill and circulating in the blood, works because ________.
the hormones create an acid condition in the vagina that acts as a spermicide
the hormones cause the woman's body to mimic the activities of a pregnancy and disrupt the ovarian cycle, preventing ovulation
the hormones prevent the proliferative or secretory phase of the menstrual cycle and the embryo will have no place to implant
the hormones cause a thickening of the mucus plug at the cervix that prevents sperm from penetrating the womb and reaching the ovulated egg
The ability of sperm cells to move along the ductus deferens is due to ________.
gravity
peristaltic contractions
enzymatic activity
hormonal action
Of the following statements, select the statement that is NOT true of uterine function.
The myometrium contracts to expel the fetus during childbirth.
The endometrium has a functional layer that the embryo will implant into.
The rhythmic, reverse peristalsis of the uterus can propel sperm toward the egg.
The narrow portion of the uterus near the cervix is the most typical site of fertilization.
Fertilization generally occurs in the ________.
ovary
uterus
vagina
uterine tubes
The most important risk for testicular cancer in young males, below age 16, is ________.
smoking
a diet high in fat
failure of the testis to make their normal descent
sexually transmitted infections
Which of the following female structures is homologous to the male scrotum?
labia majora
labia minora
clitoris
vagina
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 ________.
dizygotic
genetically identical
fraternal
potentially of different sexes
Normally menstruation occurs when ________.
blood levels of FSH fall off
blood levels of estrogen and progesterone decrease
blood levels of estrogen and progesterone increase
the corpus luteum secretes estrogen
The basic difference between spermatogenesis and oogenesis is that ________.
during spermatogenesis two more polar bodies are produced
the mature ovum is n, while the sperm is 2n
in oogenesis, one mature ovum is produced from the parent cell, and in spermatogenesis four mature sperm are produced from the parent cell
spermatogenesis involves mitosis and meiosis, but oogenesis involves meiosis only
What is the name given to the female homologue to the penis?
The labia majora.
The clitoris.
The vulva.
The Graafian follicle.
Which of the following does NOT occur in both the male and female sexual response?
Blood flow to genital structures increases.
A refractory period follows orgasm.
Blood pressure and heart rate increase.
Muscles of structures in the reproductive duct contract rhythmically.
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
not develop secondary sex characteristics
be impotent (unable to have an erection)
have impaired function of interstitial cells
Which of the following is true of testosterone?
Testosterone provides positive feedback on gonadotropin release.
Testosterone is produced by interstitial endocrine cells.
The production of testosterone is stimulated by FSH.
The release of testosterone surges during ejaculation.
Which of the choices below is NOT a function of the vagina?
serves as a passageway for the primary oocyte
serves as a passageway for menstrual flow
serves as the birth canal
receives semen from the penis during sexual intercourse
A friend confides that she desires to have children but is having trouble conceiving. Which of the following is true regarding implantation?
An estimated 60% of implanted embryos later miscarry due to genetic defects of the embryo.
Detection of human chorionic gonadotropin (hCG) in blood or urine indicates failure of the blastocyst to implant.
In cases where implantation fails to occur, a nonreceptive uterus becomes receptive once again.
It is estimated that a minimum of two-thirds of all zygotes formed fail to implant by the end of the first week or spontaneously abort.
The constancy of the chromosome number from one cell generation to the next is maintained through ________.
mitosis
meiosis
cytokinesis
DNA synthesis
Which body system of a pregnant woman undergoes the most dramatic physiological changes during pregnancy?
digestive system
urinary system
cardiovascular system
respiratory system
A urine test reveals a positive result for human chorionic gonadotropin (hCG). This indicates ________ was successful.
ovulation
fertilization
implantation
gastrulation
