Q88- Regarding ovarian female hormones the... function mainly to prepare the uterus for pregnancy and the breasts for lactation
Anonymous Quiz
1%
A- Testosterone
0%
B- T3
0%
C- T4
88%
D- Progesterone
11%
E- Estradiol
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105-Seminal plasma, the fluidd part of semen, is contribeuted by a specific organ. Which
of the following organ is the correct answer?
of the following organ is the correct answer?
Anonymous Quiz
66%
A-seminal vesicle
15%
B-Prostate
6%
C- Urethra
6%
D-bulbourethral gland
7%
E- Estradiol
5- In most species of mammals, the multiple differences between the male and the female depend primarily on a single chromosome (the Y chromosome) and a single pair of endocrine structures. What is the role of spermatogonia in
spermatogenesis?
spermatogenesis?
Anonymous Quiz
23%
a-They undergo meiotic division to form secondary spermatocytes
15%
b- They mature directly into primary spermatocytes
23%
c- They differentiate into spermatids containing the haploid number of chromosomes
4%
d- They form the head of the spermatozoa
34%
e- They serve as the primitive germ cells next to the basal lamina of the seminiferous tubules
6- The reproductive system of women, unlike that of men, shows regularcyclic changes that may be regarded as periodic preparations for fertilization and pregnancy. All of the following statements accurately describe menstrual blood and menstruation except:
a- Menstrual blood is predominantly arterial, with only 25% of the blood
being of venous origin.
b- Menstrual blood contains tissue debris, prostaglandins, and relatively large amounts of fibrinolysinfrom endometrial tissue.
c- Fibrinolysin in menstrual blood lyses clots, preventing the formation of clots unless the flow is excessive
d- The usual duration of menstrual flow is 3-5 days, but it can vary from as short as 1 day to as long as 10days.
e-The amount of blood lost during menstruation ranges normally from slight spotting to 80 mL, with an average of 30 mL, and loss of more than 80 mL is considered abnormal
a- Menstrual blood is predominantly arterial, with only 25% of the blood
being of venous origin.
b- Menstrual blood contains tissue debris, prostaglandins, and relatively large amounts of fibrinolysinfrom endometrial tissue.
c- Fibrinolysin in menstrual blood lyses clots, preventing the formation of clots unless the flow is excessive
d- The usual duration of menstrual flow is 3-5 days, but it can vary from as short as 1 day to as long as 10days.
e-The amount of blood lost during menstruation ranges normally from slight spotting to 80 mL, with an average of 30 mL, and loss of more than 80 mL is considered abnormal
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12- A woman does not lactate during normal pregnancy because lactation is inhibited by which of the following hormones?
Anonymous Quiz
9%
a- Androgens
56%
b- Estrogen
5%
c- Growth hormone
13%
d- Oxytocin
17%
e-Prolactin
18- What is the role of müllerian inhibiting substance (MIS) in testicular differentiation?
Anonymous Quiz
10%
a- Promoting ovarian development
19%
b-Initiating transcription of SRY
0%
c-Enhancing gametogenesis
71%
d- Suppressing the development of female reproductive structure
0%
e- Inducing hormone secretion
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20- Fertilization & Implantation of the ova in the female represent the beginning step for the subsequent pregnancy; its character.
a- In humans, fertilization of the ovum by the sperm usually occurs in the ampulla of the uterine tube.
b- Fertilization involves chemo-attraction of the sperm to the ovum by substances produced by the sperm.
c-Millions of sperm are deposited in the vagina during intercourse; eventually, 5-10
sperm reach the ovum, and all may cause fertilization.
d- Testosterone hormone facilitates and required for the penetration of the sperm
through the zona pellucida.
e- When two sperm reach the membrane of the ovum, they will fuse to the ovum membrane, which ismediated by fertiline; a protein on the surface of the sperms
head
a- In humans, fertilization of the ovum by the sperm usually occurs in the ampulla of the uterine tube.
b- Fertilization involves chemo-attraction of the sperm to the ovum by substances produced by the sperm.
c-Millions of sperm are deposited in the vagina during intercourse; eventually, 5-10
sperm reach the ovum, and all may cause fertilization.
d- Testosterone hormone facilitates and required for the penetration of the sperm
through the zona pellucida.
e- When two sperm reach the membrane of the ovum, they will fuse to the ovum membrane, which ismediated by fertiline; a protein on the surface of the sperms
head
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26- Ovulation is caused by a sudden increase in the secretion of
Anonymous Quiz
23%
a- Estrogen
15%
b- Progesterone
55%
c- LH
5%
d- FSH
3%
e- Prolactin
31- All are true concerning an ovulatory cycle, except?
a- anovulatory cycles are common for the first 12-18 months after menarche and
again before the onset of the menopause.
b- no corpus luteum is formed
c- corpus luteum is formed
d- the effects of progesterone on the endometrium are absent.
e- Estrogens continue to cause growth
a- anovulatory cycles are common for the first 12-18 months after menarche and
again before the onset of the menopause.
b- no corpus luteum is formed
c- corpus luteum is formed
d- the effects of progesterone on the endometrium are absent.
e- Estrogens continue to cause growth
41- Before the average of 13years of age, the female child has no MC because
Anonymous Quiz
41%
a- The hypothalamus lacks appropriate stimulation from the limbic system
18%
b- The ovaries are less well developed
1%
c- The uterus is yet in the infantile size
4%
d- The vaginal epithelium is yet in the cuboidal form
35%
e-The anterior pituitary gland has low density of the gonadotropes
61- One of the following hormones is primarily induce the initiation of
labour:
labour:
Anonymous Quiz
63%
a- Oxytocin
12%
b- progesterone
10%
c- inhibin
9%
d- estrogen
6%
e- prolactin
82- What structure develops into a testis in genetic males during
embryonic development?
embryonic development?
Anonymous Quiz
8%
a- Cortex
85%
b- Medulla
4%
c- Müllerian duct
1%
d-Ovary
3%
e- Adrenal gland
109-During menstruation, what of the following contribute to the
menstrual flow?
menstrual flow?
Anonymous Quiz
23%
a- thickening of the endometrium
3%
b-growth of corpus luteum
12%
c- increase secretion of progesterone
9%
d- increase secretion of estrogen
53%
e-vasospasm and degeneration of spiral arteries
110-Which hormone is secreted in the urine of pregnant women?
Anonymous Quiz
14%
a- oxytocin
72%
b- beta-human chorionic gonadotropin
2%
c- somatotropin
3%
d- growth hormone
9%
e- prolactin
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🛑🛑 chapter 2️⃣3️⃣
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‼️‼️تصحيح:
نقطة رقم 21 جوابه الصحيح C و ليس A
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🛑🛑 chapter 2️⃣3️⃣
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‼️‼️تصحيح:
نقطة رقم 21 جوابه الصحيح C و ليس A