Which part of the foetus is developed from mesoderm?
Heart and notochord
Heart and brain
Spinal cord and notochord
Brain and notochord
Correct Answer :
A. Heart and notochord
Related Questions
Prostate gland produces a secretion for ...
Attracting sperms
Stimulating sperm activity
Inhibiting sperm activity
None of the above
Which part of the ovary act as an endocrine gland in human beings
Stroma
Vitteline membrane
Graffian follicle
Epithelium
Epididymis is ...
A long coiled tube between vasa efferentia and vas deferens
Network of sinuses between seminiferous tubules and efferentia
Connection between vas deferens and seminal vesicle
Intermediate structure between the testis and vasa efferentia
The middle piece of the sperm contains
Protein
Nucleus
Mitochondria
Centriole
Embryo at 16-celled stage is called ...
Morula
Blastula
Blastomere
Gastrula
Forensic investigation of rape case focuses on the presence of fructose in female reproductive system, the only part of the human body producing fructose is
Cowper's gland
Prostate gland
Testes
Seminal vesicle
The pelvic inflammatory disease is common with which type of contraception?
Oral contraceptive pills
Diaphragms
Condoms
Intra uterine devices
Correct sequence of hormone secretion from beginning of menstruation is ...
FSH, progesterone, estrogen
Estrogen, fsh, progesterone
FSH, estrogen, progesterone
Estrogen, progesterone, FSH
A child's blood group is 'o'. The parent's blood groups cannot be
A AND B
A AND A
AB AND O
B AND O
Villi of human placenta develop from ..
Chorion
Allantois
Yolk sac
Amnion
Haemophilia is more common in males because it is a
Recessive character carried by y-chromosome
Dominant character carried by y-chromosome
Dominant trait carried by x-chromosome
Recessive trait carried by x-chromosome
The surgical method of contraception in males
Hysterectomy
Vasectomy
Castration
Circumcision
The male hormone testosterone is secreted by
Sertoli cells
Leydig cells
Crypt cells
Semniferous tubules
An abnormal human male phenotype involving an extra x-chromosome (xxy) is found in....
Edwards syndrome
Klinefelters syndrome
Intersex
Downs syndrome.
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
Acrosome occurs in the sperm in
Tail part
Behind the nucleus
Middle piece
Tip
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
Medical termination of pregnancy is safe till how many weeks of pregnancy?
10 weeks
12 weeks
20 weeks
22 weeks
The gonadotropic hormones are secreted by
Anterior pituitary
Posterior pituitary
Adrenals
Ovaries
Which of the following statements is most correct about the human menstrual cycle.
The menstrual cycle in all women is a 28 day cycle
Ovulation always occurs at the midpoint of the menstrual cycle
A high body temperature indicates ovulation is occurring
The menstrual cycle is an endocrine cycle regulating reproductive physiological changes
Total numbers of ovum released in the life time of a woman is approximately
40
400
4000
20000
Part of sperm that passes into ovum is
Tail
Acrosome
Head
Head, neck and middle piece
Emergency contraceptives may prevent pregnancy if used within 72 hrs of
Menstruation
Fertilization
Ovulation
Coitus
Human embryo is enclosed by a sac called
Scrotum
Ericardium
Placenta
Amniotic sac
Which cells provide nutrition to the sperms?
Sertoli cells
Leydig cells
Crypt cells
Semniferous tubules
Identical twins are also known as ..
monozygotic twins
Dizygotic twins
Fraternal twins
Zygotic twins
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
The hormone responsible for enlargement of mammary glands at puberty is
Progesterone
Oestrogen
Testosterone
Oxytocin
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
In infertility treatment the ovum is fertilized outside the body and injected into the uterus
Gamete intra fallopian transfer
Invitro fertilization
Intra uterine insemination
Zygote intra fallopian transfer