Human Reproduction Flashcards
After implantation, finger-like projections appear on the ___________________ called
chorionic villi which are surrounded by the _______
trophoblast
uterine tissue and maternal blood
In the later
phase of pregnancy, a hormone called relaxin is also secreted by
the ovary
during pregnancy the levels of other hormones
like ________________
etc., are increased several folds in the maternal blood.
estrogens, progestogens,
cortisol, prolactin, thyroxine,
Pregnancy in dogs, also called the gestation period, is
For cats?
For elephants?
63 days
63 days
18-22 months
After __________ of pregnancy, the embryo’s
heart is formed
one month
By the end of the
___________ of pregnancy, the foetus develops limbs and digits.
By the end of ________-, most of the major organ systems are formed, for example, the limbs and external genital organs are well developed.
second month 12 weeks (first trimester)
The first movements of the foetus and appearance of hair on the head are usually observed during the __________
By the end of about_________, the body is covered with fine hair, eye-lids separate, and eyelashes are formed
fifth month 24 weeks (end of second trimester)
The signals for
parturition originate from the fully developed foetus and ________
the placenta
The mitotic division starts as the zygote moves through the isthmus of the oviduct called ________ towards the uterus and forms
2, 4, 8, 16 daughter cells called _________.
cleavage
blastomeres
LH and FSH peak on the ____ day
14th
Androgens stimulate the process of
spermatogenesis
FSH acts on the ____________ and stimulates
secretion of some factors which help in the
process of ___________________
Sertoli cells
spermiogenesis
The human male ejaculates about 200 to 300
million sperms during a coitus of which, for
normal fertility, at least ______ percent sperms
must have normal shape and size and at least
______ per cent of them must show vigorous
motility.
60
40
The functions of
male sex accessory ducts and glands are maintained by the
testicular hormones (androgens).
Oogonia start division and enter into
prophase-I
The secondary follicle soon transforms into a tertiary follicle which is characterised by a fluid filled cavity called __________.
antrum
Each ovary is covered by a thin
epithelium which encloses the _____________. The stroma is divided into two zones –
ovarian stroma
a peripheral cortex and an inner medulla
The epididymis located along the _____________
of each testis
posterior surface
The Medical Termination of Pregnancy (Amendment) Act which year?
untils __ weeks one medical practioner
to ___-___ weeks, two medical practioners
2017
12
12-24
Government of India legalised MTP in _____
1971
Our population which was approximately _________ at the time of our independence reached close to the ___________ mark by 2000 and crossed
____________ in May 2011
350 mill
billion
1.2 billion
According to the 2011 census report, the population growth rate was
less than 2 per cent
Periodic abstinence is one such method in which
the couples avoid or abstain from coitus from
day 10 to 17
Family planning
1951
Amniocentesis analyzes?
fetal cells and dissolved substances
