After fertilization, implantation of human embryo takes place on
10 th day
14 th day
7 th day
3 rd day
Correct Answer :
C. 7 th day
Related Questions
Mongolian idiocy due to trisomy in 21st chromosome is known as
Downs syndrome
Turners syndrome
Klinefelters syndrome
Triple x syndrome
Part of sperm that passes into ovum is
Tail
Acrosome
Head
Head, neck and middle piece
Identical twins are also known as ..
monozygotic twins
Dizygotic twins
Fraternal twins
Zygotic twins
Albinism is a congenital disorder resulting from the lack of which enzyme?
Tyrosinase
Xanthine oxidase
Catalase
Fructokinase.
Corpus luteum secretes
Lh
Estrogen
Progesterone
Fsh
Embryonic connective tissue is formed from ..
ectoderm
endoderm
Mesenchyme
Mesogloea
Amniotic fluid protects the foetus from ...
Shock
Abortion
Degeneration
Disease
Human eggs are
Mesolecithel
Microlecithel
Macrolecithel
Alecithel
When is the best time to get FSH levels checked?
Day 7 of the menstrual cycle
Day 21 of the menstrual cycle
Day 3 of the menstrual cycle
Day 14 of the menstrual cycle
Decreased motility of sperm <40 % is known as
Azoospermia
Oligospermia
Asthenozoospermia
Necrozoospermia
Human embryo is referred to as fetus from beginning of
1st month of pregnancy
2nd month of pregnancy
3rd month of pregnancy
4th month of pregnancy
The pelvic inflammatory disease is common with which type of contraception?
Oral contraceptive pills
Diaphragms
Condoms
Intra uterine devices
Acrosome occurs in the sperm in
Tail part
Behind the nucleus
Middle piece
Tip
The hormone responsible for enlargement of mammary glands at puberty is
Progesterone
Oestrogen
Testosterone
Oxytocin
Level of estrogen and progesterone are minimum at the time of
Follicular phase
Ovulation
Secretory phase
Onset of menstrual phase
In ectopic pregnancy, foetus grows in ...
Vagina
Fallopian tube
Uterus
Body cavity
Cri-du-chat syndrome in humans is caused by the
Trisomy of 21st chromosome
Fertilization of an xx egg by a normal y-bearing sperm
Loss of half of the short arm of chromosome 5
Loss of half of the long arm of chromosome 5
HCG, HPL and relaxin are produced in women ...
At puberty
During pregnancy
Before puberty
At menopause
Villi of human placenta develop from ..
Chorion
Allantois
Yolk sac
Amnion
The gonadotropic hormones are secreted by
Anterior pituitary
Posterior pituitary
Adrenals
Ovaries
Pregnancy begins with implantation of
Embryo
Fertilized ovum
Blastopore
Blastocyst
Hormones that control the growth and maturation of graffian follicle is
FSH - LH
FSH - ICSH
ACTH - LH
GH - ADH
Cell division that occurs in zygote is called
meiosis
Mitosis
Cleavage
Differentiation
Fertility in women may be impaired by
Hypertension
Gall stones
Obesity
Short stature
Erythroblastosis foetalis is caused by fertilization between the gametes of
Rh -ve female and rh+ ve male
Rh+ ve female and rh -ve male
Rh+ ve female and rh+ ve male
Rh~ ve female and rh -ve male
Approximately how long does it take for a spermatocyte to complete its differentiation into a spermatozoan in the testis?
7 days
70 days
7 months
70 hours
The middle piece of the sperm contains
Protein
Nucleus
Mitochondria
Centriole
Failure of the brain to grow in the foetus may result in:
Plagiocephaly
Craniostenosis
Anencephaly
Microcephaly
What happens during fertilization when many sperms reach close to ovum ....
Cells of corona radiata trap all the sperm except one
Only two sperms nearest to ovum penetrate zona pellucida
Secretion of acrosome helps one sperm enter cytoplasm of ovum through zona pellucida
All sperms except the one nearest to ovum lose their tails
During ovulation, for favourable sperm travel oestrogen causes
Cervical mucus to become stretchy and clear
Less cervical mucus production
Tenderness of cervix
Slight vaginal bleeding