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
Correct Answer :
B. 70 days
Related Questions
Sertoli cells are found in
Seminiferous tubules
Ovaries
Prostate gland
Semen
Third phase of embryo development is ...
Cleavage
Fertilization
Gametogenesis
Gastrulation
Cu ions released from copper-releasing intra uterine devices (iuds)
Prevent ovulation
Suppress sperm motility
Prevents implantation of embryo
Kills sperms
Most of major organs of human embryo are formed by the
16th week of pregnancy
15th week of pregnancy
14th week of pregnancy
12th week of pregnancy
In a semen analysis, the following is not acceptable as normal�
25 % abnormal forms
60% motility after 3 hours
Mild Alkaline reaction
Sperm count of 17 million per ml.
What is the name of the inner lining of the uterus?
Myometrium
Endometrium
Epithelium
Endothelium
Amniotic fluid protects the foetus from ...
Shock
Abortion
Degeneration
Disease
What is the best sperm extraction technique for men with obstructive azoospermia?
TESE - Microsurgical testicular sperm extraction
Percutaneous Epididymal Sperm Aspiration (PESA)
Intra cytoplasmic sperm injection ( ICSI)
Fine needle aspiration
In menstrual cycle the secretory phase is also known as
luteal phase and lasts for 6 days
Luteal phase and lasts for 13 days
Follicular phase and lasts for 13 days
Follicular phase and lasts for 6 days
The first milk which comes out just after child birth is known as .
Colostrum
Prolactin
Hind milk
Lactogen
The most important region of the decidua for the nourishment of the conceptus is the deciduas
Frondosum
Capsularis
Parietalis
Basalis
An abnormal human male phenotype involving an extra x-chromosome (xxy) is found in....
Edwards syndrome
Klinefelters syndrome
Intersex
Downs syndrome.
When there is no fertilization, the corpus luteum ...
Stops secreting progesterone
Changes to corpus albicans
Starts producing progesterone
Begins next cycle
Level of estrogen and progesterone are minimum at the time of
Follicular phase
Ovulation
Secretory phase
Onset of menstrual phase
Prostate gland produces a secretion for ...
Attracting sperms
Stimulating sperm activity
Inhibiting sperm activity
None of the above
A genetically diseased father (male) marries with a normal female and gives birth to 3 carrier girls and 5 normal sons. Find out the type of genetic disease.
Sex-influenced disease
Blood group inheritance disease
Sex-linked disease
Sex-recessive disease
Which of the following is not a hereditary disease?
Cystic fibrosis
Thalassaemia
Haemophilia
Cretinism
Chorionic gonadotropin is secreted by ...
Pituitary
Ovary
Placenta
Uterus
Fertility in women may be impaired by
Hypertension
Gall stones
Obesity
Short stature
Human female reaches menopause at the age of about ...
25 years
35 years
50 years
70 years
The functional unit of testis of man is ...
Uriniferous tubules
Malpighian tubules
Seminiferous tubules
Acini or lobules
Embryo at 16-celled stage is called ...
Morula
Blastula
Blastomere
Gastrula
Decreased motility of sperm <40 % is known as
Azoospermia
Oligospermia
Asthenozoospermia
Necrozoospermia
In which phase of menstrual cycle ovulation occurs in
Luteal
Menstrual
Proliferative
Secretory
HCG, HPL and relaxin are produced in women ...
At puberty
During pregnancy
Before puberty
At menopause
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
The male hormone testosterone is secreted by
Sertoli cells
Leydig cells
Crypt cells
Semniferous tubules
Tunica albuginea is related to
Prostate gland
Pituitary gland
Hypothalamus
Testes
Menstrual phase is followed by .
Luteal phase
Follicular phase
Fertilization
Implantation
What are the chances of a normal fertile couple having a baby in one year?
40%
80%
20%
50%