Removal of the testes in the adult causes
Anonymous Quiz
6%
A rise in the pitch of the voice
89%
Loss of libido, Hot flushes, irritability and depression
3%
Loss of the ability to copulate
3%
A fall in the blood levels of LH and FSH.
Secondary sexual characteristics do not develop in children
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16%
Whose seminiferous tubules, but not interstitial cells, have been damaged by radiation.
13%
Suffering from severe malnutrition
6%
With undescended testis
66%
Lacking pituitary hormones.
Infertility in the male can be explained by observations that
Anonymous Quiz
61%
There are no motile sperms in seman 15 minutes after ejaculation.
15%
20% of the sperma in the semen are abnormal
18%
The sperm count is 10"/ml
6%
The sperm count is more than 50 milions/ml.
If a young woman has high plasma levels of T3, cortisol, and renin activity but her blood pressure is only slightly elevated and she has no symptoms or signs of thyrotoxicosis or Cushing syndrome, the most likely explanation is that:
Anonymous Quiz
13%
She has been treated with TSH and ACTH
0%
She has been treated with 13 and cortisick
80%
She is in the third trimester of pregnancy.
7%
She has an adrenocortical tumor
In humans, fertilization usually occurs in the
Anonymous Quiz
3%
Vagina.
0%
Cervix
3%
Uterine cavity,
94%
Uterine tubes.
Which of the following is not a steroid?
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6%
17a-hydroxyprogesterone
0%
Estrone
85%
Relaxin
9%
Pragnenolone
Which of the following probably triggers the onset of labor?
Anonymous Quiz
16%
ACTH in the fetus
3%
ACTH in the mother
0%
Prostaglandins
81%
Oxytocin
Loss of libido can be due to?
Anonymous Quiz
72%
Low testosterone level,
0%
Use of antibiotics
0%
Occasional drinking of alcohol
28%
All of the above
Which of the following inhibits pituitary FSH secretion?
Anonymous Quiz
0%
Testosterone
0%
LH
100%
Inhibin
0%
GnRH
When does maturation of graafian follicle begin?
Anonymous Quiz
3%
Before birth
3%
After menopause
91%
At puberty
3%
During childhood
Which of the following hormones stimulates the growth of small ovarian follicles at the beginning of the follicular phase of menstrual cycle?
Anonymous Quiz
3%
LH
0%
ACTH
0%
TSH
97%
FSH
Which of the following describes triggering of LH surge (sudden Increase) by rising level of estrogen at the time of ovulation?
Anonymous Quiz
97%
Positive feedback
0%
Short loop negative
0%
Long loop negative feedback
3%
Ultrashort negative feedback
Which of the following hormones inhibits FSH by negative feedback in the follicular phase of menstrual cycle?
Anonymous Quiz
9%
LH
3%
HCG
12%
Progesterone
76%
Estrogen
On which of the following menstrual cycle days does ovulation occur in a typical 28-day cycle?
Anonymous Quiz
0%
Day 5
0%
Day 21
3%
Day 35
97%
Day 14
Which of the following hormones causes growth and rupture of mature graafian follicle to release the ovum at the time of ovulation?
Anonymous Quiz
18%
FSH
15%
Estrogen
9%
Progesterone
59%
LH
Which of the following is/are TRUE as regards corpus luteum?
Anonymous Quiz
0%
Secretes progesterone and estrogen in postovulatory pariod.
13%
continues to grow under the effect of HCG a if pregnancy occurs
3%
It degenerates and transformed into corpus albicans if pregnancy does not occur.
84%
All of the above
Which of the following acts as a second messenger for FSH hormone?
Anonymous Quiz
94%
cAMP
0%
DNA
3%
Ca
3%
mRNA
Which of the following hormones produces shift in the histologic appearance of the endometrium to the secretory phase?
Anonymous Quiz
13%
Estrogen
6%
Follicle stimulating hormone (FSH)
9%
Luteinizing hormone (LH)
72%
Progesterone
Which of the following is/are signis of ovulation?
Anonymous Quiz
6%
Thick and cellular cervical muous temperature
13%
Secretory andometrium.
3%
Drop of basal body
6%
All of the above
72%
Only A and B
Which of the following is the portion of endometrium that shows the cyclic changes and shed with menstrual bleeding?
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70%
Decidua functionalis
7%
Ectocervical mucosa
10%
Decidua basalis
13%
Myometrial layer
👍1
Which of the following describes the proliferative endometrium?
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16%
Very thick (6mm)
6%
Corkscrew & secretory glands
61%
Straight and short glanda
16%
Tortuous & spiral arteries