Sertoli cells are found in
Seminiferous tubules
Ovaries
Prostate gland
Semen
Correct Answer :
A. Seminiferous tubules
Related Questions
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
The most important region of the decidua for the nourishment of the conceptus is the deciduas
Frondosum
Capsularis
Parietalis
Basalis
The male hormone testosterone is secreted by
Sertoli cells
Leydig cells
Crypt cells
Semniferous tubules
Ovulation occurs under the influence of high titre of
LH
FSH
Estrogen
Progesterone
Cu ions released from copper-releasing intra uterine devices (iuds)
Prevent ovulation
Suppress sperm motility
Prevents implantation of embryo
Kills sperms
Thick layer which surrounds the ovum is ...
Zona pellucida
Membrana granulosa
Corona radiata
Theca interna
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
Villi of human placenta develop from ..
Chorion
Allantois
Yolk sac
Amnion
At the end of meiosis I, the Oocyte yields
Secondary Oocyte and first polar body
First polar body
Secondary Oocyte
Second polar body
The number of chromosomes present in sperms
46
23
23 + X
23+ Y
In which phase of menstrual cycle ovulation occurs in
Luteal
Menstrual
Proliferative
Secretory
Mongolian idiocy due to trisomy in 21st chromosome is known as
Downs syndrome
Turners syndrome
Klinefelters syndrome
Triple x syndrome
Pregnancy begins with implantation of
Embryo
Fertilized ovum
Blastopore
Blastocyst
Human embryo is enclosed by a sac called
Scrotum
Ericardium
Placenta
Amniotic sac
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
Human eggs are
Mesolecithel
Microlecithel
Macrolecithel
Alecithel
Level of estrogen and progesterone are minimum at the time of
Follicular phase
Ovulation
Secretory phase
Onset of menstrual phase
Human female reaches menopause at the age of about ...
25 years
35 years
50 years
70 years
After ovulation graffian follicles turns into
Corpus luteum
Corpus albicans
Corpus callosum
Corpus artesia
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
Pregnancy is ascertained by
Insemination
Copulation
Implantation
Capacitation
Cell division that occurs in zygote is called
meiosis
Mitosis
Cleavage
Differentiation
The three primary germ layers, ectoderm, endoderm and mesoderm are differentiated during
Blastulation
Neurulation
Gastrulation
Organogenesis
Total numbers of ovum released in the life time of a woman is approximately
40
400
4000
20000
The part of the sperm containing proteolytic enzymes to digest the zona pellucida is the:
Capacitor
Head
Corona
Acrosome
Number of chromosomes in secondary oocyte stage in humans is ...
23
46
18
20
Fertility in women may be impaired by
Hypertension
Gall stones
Obesity
Short stature
Third phase of embryo development is ...
Cleavage
Fertilization
Gametogenesis
Gastrulation
Normal sperm count is
40 to 300 million per ml
10 to 20 million per ml
< 10 million per ml
200 million per ml