Human Reproduction

Question 1

What is the purpose of Cremaster muscle?

Answer 1

Elevates the testes to maintain the right temp. for spermatogenesis

Question 2

Cryptorchidism

Answer 2

Failure of testes to descend into the scrotum from the abdomen

Question 3

what are found between 2 seminiferous tubules?

Answer 3

Blood vessels/Leydig cells/Immunologically competent cells

Question 4

Functions of Sertoli cells

Answer 4

1. Nourish germ cells
2. Produce inhibin & Anti-mullerian hormone
3. Basis of blood testis barrier
4. Phagocyte injured or dead sperm cells

Question 5

What is the correct sequence of transport of sperms in the Male reproductive sys?

Answer 5

Seminiferous tubules → Rete testis → Vasa efferentia → Epididymis → Vas deferens → Ejaculatory duct → Urethra → Urethral meatus

Question 6

Spermiation

Answer 6

Liberation of sperms from sertoli cells of seminiferous tubules

Question 7

Testis is attached to walls of scrotal sac with the help of group of fibres called………………

Answer 7

Gubernaculum or mesorchium

Question 8

Epididymis function

Answer 8

Maturation, motility and storage of sperms

Question 9

which tube re-enters abdomen and loops over the urinary bladder?

Answer 9

Vas Deferens

Question 10

3 coats by which testis is covered

Answer 10

outer - tunica vaginalis
middle-tunica albuginea
inner-tunica vasculosa

Question 11

3 parts of epididymis

Answer 11

upper-caput
middle-corpus
basal-cauda

Question 12

erection of penis is controlled by ______nervous system

Answer 12

parasympathetic nervous system

Question 13

ejaculation of semen is controlled by _____nervous system

Answer 13

sympathetic nervous system

Question 14

spermiogenesis/spermateleosis

Answer 14

process of transformation of circular spermatid to spermatozoa

Question 15

During cleavage in zygote mitotic spindle assembly is done by

Answer 15

proximal centriole of sperm

Question 16

Follicular atresia

Answer 16

process by which ovarian follicles degenerate between the time of birth till puberty

Question 17

most powerful sphincter in our body

Answer 17

External Os

Question 18

Progesterone(Feedback)

Answer 18

progesterone gives negative Feedback to LH

Question 19

moderate amt of Estrogen (Feedback)

Answer 19

Estrogen in moderate amts gives negative Feedback to GnRH,FSH,LH

Question 20

High amts of estrogen (Feedback)

Answer 20

high amts of estrogen gives positive Feedback to GnRH,FSH,LH(LH -surge induced)

Question 21

Inhibin(Feedback)

Answer 21

Inhibin gives negative Feedback for FSH

Question 22

Which germ layers form Chorion

Answer 22

outside-ectoderm(trophoectoderm)

Inside-mesoderm

Question 23

Which germ layers form Amnion

Answer 23

outside-Mesoderm

Inside-Ectoderm

Question 24

Which germ layers form Allantois

Answer 24

outside-mesoderm

Inside-endoderm

Question 25

Which germ layers form yolk sac

Answer 25

outside-mesoderm

Inside-endoderm

Question 26

Amniotes examples

Answer 26

Reptiles,Aves,Mammals

RAM

Question 27

Anamniotes

Answer 27

Cyclostomata,Pisces ,AAmphibia

CyPA

Question 28

Allantois stores excretory wastes in

Answer 28

Reptiles , birds and prototherians(NOT humans)

Question 29

Hormones of Human Placenta

Answer 29

hCG
relaxin
HPL/hCS
CRH/CRF

Question 30

what is the function of corticotropin-releasing hormone/factor

Answer 30

1. Establishes timing of birth

2. increases secretion of cortisol

Question 31

On the basis of histology human placenta is

Answer 31

Haemochorial

Question 32

Haemopoiesis initially occurs in which extra embryonic layer in humans?

Answer 32

Yolk Sac

Question 33

After implantation endometrium is known as

Answer 33

Decidua

Question 34

Implantation of blastocyst takes place abt ____ days after fertilization

Answer 34

7-8 days

Question 35

What are the layers of ovary made of?

Answer 35

Outer-germinal epithelium

inner-T.albuginea made of WFCT