corpus luteum in involution up to the corpus albicans are present in the ovary; D
– the
ovaries primarily secrete estrogens; E
– estrogen blood level rises and reaches the peak
by ovulation.
2. Each of the following statements concerning the luteal phase of the ovarian cycle
is true, EXCEPT:
A
– begins after ovulation and lasts up to the 28th day of a cycle; B – at the beginning of
this phase, the corpus luteum is formed; C
– the corpus luteum produces progesterone; D
– progesterone stimulates the ovarian follicle development; E – at the end of this phase,
the corpus luteum begins to regress, and progesterone level declines.
3. Each of the following statements concerning the hormonal regulation of the
ovarian cycle is true, EXCEPT:
A
– FSH blood level possesses two peaks: on the 7th day and on the 14th day; B – LH
blood level sharply increases by the 14th day; C
– progesterone inhibits LH production; D
– estrogens stimulate LH secretion and inhibit FSH secretion; E – prolactin (LTH) does not
take part in the ovarian cycle regulation.
4. Each of the following statements concerning the endometrium is true, EXCEPT:
A
– its epithelium is simple columnar, consisting of secretory and ciliated cells; B – its
glands are simple nonbranched tubular; C
– secretion of its glands is controlled by
estrogens; D
– its glandular bottoms contain stem cells for re-epithelialization; E – the
endometrial stroma consists of loose connective tissue.
5. Each of the following statements concerning the proliferative phase of the
menstrual cycle is true, EXCEPT:
A
– is regulated by progesterone; B – epithelial cells in glandular bottoms proliferate and
cover the endometrial surface; C
– the endometrium thickens due to proliferation of
stromal cells and matrix secretion; D
– uterine glands are restored; E – the helical
arterioles are re-established.
6. Each of the following statements concerning the secretory phase of the
menstrual cycle is true, EXCEPT:
A
– starts 2-3 days after ovulation; B – the endometrium thickens by edema; C – the
uterine glands begin to secrete; D
– the helical arterioles become more coiled; E – is
controlled by estrogens.
7. Each of the following statements concerning the menstrual phase of the uterine
cycle is true, EXCEPT:
A
– starts when the corpus luteum begins to regress, and progesterone level declines; B –
initially, contractions of the helical arteriole wall occur and last several hours; C
– arterial
contractions result in ischemia and necrosis of the functional layer; D
– subsequent arterial
dilation leads to vessel rupture, bleeding, and desquamation of the necrotic functional
layer; E
– the rising level of progesterone stops menstrual discharge.
8. Each of the following statements concerning the oviduct epithelium is true,
EXCEPT:
A
– its secretory cells produce mucus providing embryo implantation; B – its secretory
cells produce mucus providing the initial embryo development till the morula stage; C
– its
secretory cells create the environment for fertilization; D
– its ciliated cells facilitate the
transport of gametes and an embryo; E
– its cilium waves are directed towards the uterus;
9. Each of the following statements concerning the vaginal epithelium is true,
EXCEPT:
A
– is stratified squamous; B – undergoes keratinization during the cycle; C – its cells
synthesize and accumulate glycogen; D
– its cells are continuously desquamated into the
vaginal lumen where bacteria metabolise glycogen into lactic acid; E
– vaginal acid pH
limits the growth of pathogenic organisms.
10. Each of the following statements concerning the mammary gland development
is true, EXCEPT: