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Biology (Medical Entrance) - 8

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Which of the following hormones attains a peak level in the middle of the menstrual cycle (around the 14th day)?

  1. LH

  2. Progesterone

  3. Oxytocin

  4. GNRH


Correct Option: A
Explanation:

Luteinising hormone is responsible for ovulation and its level is at peak on the 14th day of the menstrual cycle.

IUI associated with infertility stands for

  1. Intra Uterine Device

  2. Intra Uterine Insemination

  3. Inner Uterine Insemination

  4. Intra Uterine Injection


Correct Option: B
Explanation:

IUI stands for Intra Uterine Insemination.

Which organisms do not have ear ossicles?

  1. Amphibians

  2. Reptiles

  3. Fishes

  4. Birds


Correct Option: C
Explanation:

 Fishes do not have ear ossicles.

Directions: The following question has four choices out of which ONLY ONE is correct.

Canaliculi is found in which of the following structures?

  1. Dentine of teeth

  2. Liver

  3. Bones

  4. All of the above


Correct Option: D
Explanation:

  It is found in dentine of teeth, in liver and in bones.

The structure Placenta is an association of tissues between the

  1. oviducal wall of the mother and uterine wall of the foetus

  2. oviducal wall of both mother and foetus

  3. uterine walls of both mother and foetus

  4. uterine walls of mother and some other parts of foetus


Correct Option: D
Explanation:

The structure Placenta is an association of tissues between the uterine walls of the mother and some other parts of foetus.

In human female fertiliization of ovum takes place in

  1. ovary

  2. uterus and cervix

  3. the ampullary isthmic junction of the fallopian tube

  4. oviducal funnels and uterus


Correct Option: C
Explanation:

In rabbit, man and other placental mammals ferilization of ovum takes place in the ampullary isthmic junction of the fallopian tube.

The yellow-coloured first milk that comes out from the mother's mammary glands, just after the child birth, is

  1. yellow milk

  2. colostrum

  3. coliseum

  4. placental lactogen


Correct Option: B
Explanation:

Colostrum is the first secreted milk. It is low in fat and high in carbohydrates, proteins and antibodies in order to keep the baby healthy.

In human, the foetus is enclosed in a bag of liquid called

  1. amnion

  2. endometrium

  3. chorion

  4. allantois


Correct Option: A
Explanation:

In human, the foetus is enclosed in a bag of liquid called amnion.

In human being, the first phase of embryonic development is

  1. cleavage

  2. gastrulation

  3. fertilisation

  4. blastulation


Correct Option: C
Explanation:

Fertilisation is the first phase.

During fertilisation, the preparation of sperm before the penetration of ovum is called

  1. coitus

  2. capacitation

  3. insemination

  4. spermiation


Correct Option: B
Explanation:

Capacitation is the process by which spermatozoa become capable of fertilizing an ovum.

Membraneous covering tunica albuginea is the covering of

  1. lungs

  2. kidney

  3. heart

  4. testis


Correct Option: D
Explanation:

Tunica albugenia is the covering of testis.

The cyclic process, called estrous cycle, is the characteristic feature of

  1. all mammmals

  2. all mammal females

  3. human females only

  4. mammalian females other than primates


Correct Option: D
Explanation:

Estrous cycle is found in all female mammals, except primates.

The condition which results in the absence of menstruation in breast feeding female is

  1. coitus interrupts

  2. lactational amenorrhea

  3. with drawl

  4. periodic absistance


Correct Option: B
Explanation:

The condition which results in the absence of menstruation in breast feeding female is lactational amenorrhea.

Human skull is

  1. monocondylar

  2. polycondylar

  3. dicondylar

  4. none of the above


Correct Option: C
Explanation:

Human skull is dicondylar.

 

The results in failure of descent of testis in scrotal sacs is called

  1. vasectomy

  2. cryptorchidism

  3. impotency

  4. tubectomy


Correct Option: B
Explanation:

Failure of descent of testis in scrotal sacs is called cryptorchidism.

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