Week 11 Reproductive Flashcards
A sample of a woman’s blood is analyzed for reproductive hormone levels. The results indicate a high level of progesterone, relatively high levels of inhibin, and low levels of FSH and LH. The female is most likely experiencing ________ of the uterine cycle.
the secretory phase.
A mature follicle releases an ovum in response to a surge in;
luteinizing hormone.
The special type of cell division required to produce gametes is called
meiosis.
The ________ is the glycoprotein-rich region between the developing oocyte and the granulosa cells.
zona pellucida.
Which of the following does not occur after menopause?
Estrogen levels rise.
Which of the following is not a similarity between the testis and ovary?
Both produce progesterone.
Which of the following hormones is the primary stimulant of milk production?
prolactin.
The cells that are formed during spermatogenesis by the first meiosis are called
secondary spermatocytes.
The formation of a tetrad of maternal and paternal chromosomes during spermatogenesis is called;
synapsis.
The organ that surrounds the urethra and produces an alkaline secretion is the
prostate gland
Which of the following is the function of the ovaries?
Answers:
a.
secretion of hormones.
b.
production of oocytes.
c.
All of the answers are correct.
d.
formation of immature gametes.
e.
secretion of inhibin.
c.
All of the answers are correct.
Which of the following statements concerning oogenesis is false?
Answers:
a.
An ovum completes its last meiosis after it is fertilized.
b.
About half the oogonia complete mitosis between birth and puberty.
c.
Oogenesis begins before birth.
d.
Ova develop from stem cells called oogonia.
b.
About half the oogonia complete mitosis between birth and puberty.
After ovulation, the ovary secretes;
both estrogen and progesterone.
The granulosa cells of developing follicles secrete;
estradiol.
Primary spermatocytes are produced by mitosis of cells called;
spermatogonia.
The uterine phase that develops because of a fall in progesterone levels is the
menses.
The role of FSH in males is to;
initiate sperm production in the testes.
Human chorionic gonadotropin (hCG);
is secreted by the developing placenta and can be detected in the urine <16 weeks gestation.
During the proliferative phase of the menstrual cycle, the;
functional zone of the endometrium is restored.
The small paired structures at the base of the penis that secrete a thick, alkaline mucus are the;
bulbo-urethral glands.
Which of the following best describes the follicular phase of the ovarian cycle?
Answers:
a.
during the follicular phase the corpus luteum develops due to increasing levels of oestrogen.
b.
during the follicular phase the dominant follicle develops due to increasing levels of oestrogen.
c.
during the follicular phase the dominant follicle develops due to increasing levels of testosterone.
d.
during the follicular phase the corpus luteum develops due to increasing levels of progesterone.
b.
during the follicular phase the dominant follicle develops due to increasing levels of oestrogen.
Oxytocin is secreted by;
the fetal and maternal hypothalamus.
Which of the following statements about oogenesis is false?
Answers:
a.
The polar body is the egg cell which is then fertilized by the sperm cell.
b.
Meiosis II is not completed until after the egg cell makes contact with the sperm cell.
c.
Far fewer eggs are produced by the female than sperm produced by the male.
d.
Meiosis I begins in the female fetus.
a.
The polar body is the egg cell which is then fertilized by the sperm cell.
The most important androgen is;
testosterone.
