Reproduction In Humun

Question 1

Ovuary

Answer 1

Produces ova and release female sex hormone (oestrogen)

Question 2

Fallopian tube(oviduct)

Answer 2

Site of fertilization

Question 3

Uterus(womb) muscle

Answer 3

Contract at birth to expel the baby

Question 4

Uterus lining

Answer 4

Site of implantation

Question 5

Cervix

Answer 5

Dilates at birth

Question 6

Vagina

Answer 6

Organ of copulation (sperm deposition)

Question 7

Testis

Answer 7

Priduces sperms and produce testosterone horomone

Question 8

Scortum

Answer 8

Keep testes outside the abdominal cavity،at lower temperature than body which is essential for making sperm

Question 9

Epiderm

Answer 9

Stores sperm

Question 10

Sperm duct

Answer 10

Carries sperm from testies to urethra

Question 11

Urethera

Answer 11

Passes out urine or semen

Question 12

Seminal vesicles

Answer 12

Secrets the seminal fluid

Question 13

Prostate gland

Answer 13

Their secretion makes the semen alkaline to neturlize acidity of urethra

Question 14

Fertilization

Answer 14

Fusion of male and female gametes to produce a diploid zygote

Question 15

Where ova product and by what type of division

Answer 15

In ovary by meiosis

Question 16

Where sperm produce and what type of division and when

Answer 16

Testies by meiosis at puberty

Question 17

Where and when follicle stimulation hormone release

Answer 17

Release from pituitary gland in beginning of the cycle

Question 18

Where oestrogen release

Answer 18

Release from the ovary and follicle

Question 19

Role of oestrogen

Answer 19

It stimulates the repair of the walls of the uterus
Stop release of fsh by negative feedback
Sitmulates release of LH

Question 20

Where and when leutinzing hormone release

Answer 20

Pituitary gland
At day 13

Question 21

Role of leutinizing hormone

Answer 21

1.Stimulate the release of ova into the oviduct(ovulation)
2.Sitmulate the change of the follicle into corpus lutenum

Question 22

Where Progesterone releare

Answer 22

Release from the corpus litenum

Question 23

Role of progesterone

Answer 23

Support and maintain the walls of urterus

Question 24

Role of follicle stimulation

Answer 24

Stimulates the maturation of a folicle in the ovary and release of oestrogen

Question 25

Structure of sperm and its function

Answer 25

Head (acrosone produce enzyme to digest wall of ova,nucleus) Body (large number of mitochondria to provide energy for movement (aerobic respiration),tail for swimming

Question 26

How fertilization happen in humuns

Answer 26

Happen after sexual intercourse,sperm swim by their tail from vagina through cervix,uterus, oviduct where sperm find ovum,acrosone produce enzymes to digest wall of ova,first sperm that reaches to cell membrane of ova enter nucleus, both nuclie fuse together form diploid nucleus in oviduct,jelly and cell membrane harden to prevent other sperm from entering

Question 27

How sperm respire

Answer 27

Take glucose from semen respire and produce energy for swimming

Question 28

Which one is bigger ova or sperm

Answer 28

Ova

Question 29

How implantation happen

Answer 29

Zygote does cell division call mitosis, devolp into embyro,embyro go down to uterus by perstalisis to be implant in uterus lining,when embyro devolp and form into its organ at end of third month devolp into fetus

Question 30

What type of division does zygote do to devolp into embyro

Answer 30

Mitosis

Question 31

What mean implantation

Answer 31

Entry of embyro in uterus lining

Question 32

What mean a zygote

Answer 32

1 cell formed after fertilization

Question 33

What mean an embyro

Answer 33

Ball of cells

Question 34

Importance of placenta

Answer 34

1.gasexchange:oxgyeb diffuse from mom's blood to fetus blood,carbondioxide diffuse from fetal blood to mom's blood 2.nutrtion:nutrients like glucose and ammino acid go to fetal blood through placenta 3.excertion:waste product diffuse from fetal blood to mom's blood Secrete ostergone and progosterone hormone 4.prevent mixing mom's blood with fetal blood

Question 35

Importance of progesterone and osterogene hormone

Answer 35

1.maintain line of uterus to support fetus 2.sitmulate forming milk produce tissue in breast 3.stop release of FSH and LH during pregnancy to prevent ovualtion

Question 36

What is the umbilical cord

Answer 36

Attach fetus to placenta and has artery and vien

Question 37

Function of umbilical cord

Answer 37

Carries oxygen,glucose,amminoacid,fattyacid,glycerol,antibodies from placenta to fetus through umbilical vien Carries carbondioxide،urea from fetus to placenta through umbilical artery

Question 38

Importance of amniotic fluid

Answer 38

Protect fetus from mechanical shock Support fetus Give sterile warm environment Allow fetus for movment

Question 39

Where is amniotic fluid

Answer 39

Amnion

Question 40

What purpose pf not mixing mum's blood with baby blood

Answer 40

Prevent infection ,protect baby from blood agglutination (mom's blood has different blood group)

Question 41

Function of testosterone

Answer 41

Sperm devolpment Sex drive Secondary sexually characteristics

Question 42

Why operation of cutting sperm duct more common than operation of cutting oviducts in females

Answer 42

As it's safer and testes outside

Question 43

Explain how one type of molecule from the mother helps to protect the fetus from infection

Answer 43

Antibodies from mother bind to antigen kill bacteria

Question 44

Suggest function of acrosome

Answer 44

Produce enzymes that digest wall of ova that allow nucleus to enter for fusion