When there is no fertilization, the corpus luteum ...
Stops secreting progesterone
Changes to corpus albicans
Starts producing progesterone
Begins next cycle
Correct Answer :
B. Changes to corpus albicans
Related Questions
The number and appearance of chromosomes in the nucleus of a eukaryotic cell is called as
Karyotype
Genotype
Phenotype
Cytogenetics
Secretion of testosterone is stimulated by
FSH
TSH
ICSH
ACTH
Normal sperm count is
40 to 300 million per ml
10 to 20 million per ml
< 10 million per ml
200 million per ml
In which phase of menstrual cycle ovulation occurs in
Luteal
Menstrual
Proliferative
Secretory
Immediately after ovulation, the ovum is covered by a membrane called
Chorion
Zona pellucida
Corona radiata
Vitelline membrane
Decreased motility of sperm <40 % is known as
Azoospermia
Oligospermia
Asthenozoospermia
Necrozoospermia
Layers of ovum from outside to inside are .
Corona radiata, zona pellucida, vitelline membrane
Zona pellucida, corona radiata, vitelline membrane
Vitelline membrane, zona pellucida, corona radiata
Zona pellucida, vitelline membrane, corona radiate
Acrosome of sperm contains ...
Hyaluronidase and acrosin
Hyaluronic acid and acrosin
Hippuric acid and uric acid
Testosterone
Albinism is a congenital disorder resulting from the lack of which enzyme?
Tyrosinase
Xanthine oxidase
Catalase
Fructokinase.
The pre fertilisation process stage of sperm before entry into the ovum is called as
Maturation
Insemination
Capacitation
Fertilization
Which cells provide nutrition to the sperms?
Sertoli cells
Leydig cells
Crypt cells
Semniferous tubules
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
The chemical of the ovum that attracts and holds sperm
Fertilizin
Antifertilizin
Agglutin
Antiagglutinin
Corona radiata is held by...
Mucopolysaccharide
Oligosaccharide
Lipopolysaccharide
Lipoprotein
Human placenta is
Endothelial
Haemochorial
Epitheliochorial
Syndesmochorial
Tunica albuginea is related to
Prostate gland
Pituitary gland
Hypothalamus
Testes
Mammary glands are modification of ...
Sebaceous glands
Sweat glands
Meibomian glands
None of the above
Third phase of embryo development is ...
Cleavage
Fertilization
Gametogenesis
Gastrulation
Highly sophisticated procedure of injecting sperm directly into the ovum is
GIFT
ZIFT
ICSI
IUI
The rate of active movement of sperm is ...
1.5 -3.0 mm/min
1.5 - 3.0 cm/min
1.5 -3.0 m/min
1.5 -3.0 m/hr
Fertility in women may be impaired by
Hypertension
Gall stones
Obesity
Short stature
Which of the following is not a hereditary disease?
Cystic fibrosis
Thalassaemia
Haemophilia
Cretinism
Menstrual phase is followed by .
Luteal phase
Follicular phase
Fertilization
Implantation
Emergency contraceptives may prevent pregnancy if used within 72 hrs of
Menstruation
Fertilization
Ovulation
Coitus
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
Membrane that gives protection to embryo from external shocks is
Amnion
Allantois
Chorion
Placenta
The embryonic stage that resembles a mulberry fruit is
Nerula
Gastrula
Morula
Blastula
When there is no fertilization, the corpus luteum ...
Stops secreting progesterone
Changes to corpus albicans
Starts producing progesterone
Begins next cycle
Corpus luteum secretes
Lh
Estrogen
Progesterone
Fsh
Name the pituitary hormone that regulates sertoli cells
Prolactin
LH
FSH
Oxytocin