Reporductive Systems

Question 1

Function of scrotum

Answer 1

1. Temperature regulator
2. Houses and protects the testes

Question 2

Function of testes

Answer 2

1. Sperm production by terminal layer
2. Production of testosterone by interstitial cells

Question 3

Cells of Leydig

Answer 3

Interstitial cells

Question 4

What does the tasty consist of?

Answer 4

Compartments or globals that are high convoluted with tubes that form seminiferous tubs

Question 5

Function of epididymis

Answer 5

1. Matures sperm to become motile and fertile
2. Stores sperm

Question 6

Function of sperm duct

Answer 6

Pushes mature sperm by strong peristaltic wave

Question 7

Function of the copper gland

Answer 7

Produces alkaline mucus like fluid when sexually aroused
1. Neutralises acidic urine present in the urethra
2. Lubricates urethra and external urethral opening

Question 8

Function of the prostate gland

Answer 8

Secrete fluid that aids the transport of sperm which contains enzymes that make the sperm more motile

Question 9

Function of urethra

Answer 9

Forms a common duct for the transportation of semen and urine

Question 10

Erectile tissue

Answer 10

1. Corpus cavernosa (2 - dorsal)
2. Corpus spongiosum (1 - ventral)

Question 11

Function of penis

Answer 11

Deposit semen with sperm into the vagina during copulation

Question 12

Function of ovaries

Answer 12

1 form and release eggs
2. Produce estrone and progesterone

Question 13

function of fallopian tubes

Answer 13

1. Pathway from the uterus to the ovary for the egg, sperm and zygote
2. Site of fertilisation and initial cell division of your zygote
3. And developing zygote is moved to the uterus by the muscles and cilia

Question 14

What is the function of the uterus

Answer 14

1. Blastocyst implants, develops and gross
2. Contractions of your myometrium during birth

Question 15

What muscles keep the cervix closed during pregnancy?

Answer 15

Sphincter muscle

Question 16

What is your uterine wall made up of?

Answer 16

• Myometrium
• endometrium

Question 17

Function of vagina

Answer 17

1. Sperm is deposited during intercourse
2. Birth canal

Question 18

Define puberty

Answer 18

Process of physical and physiological changes

Question 19

Define adolescence

Answer 19

Period of physical, physiological and psychological changes

Question 20

How does puberty start?

Answer 20

The maturity gland is stimulated from your hypothalamus in which it release gonadtropins

Question 21

Gonadtropin in males

Answer 21

Interstitial cell stimulating hormone
Stimulates the testis to secrete testosterone

Question 22

Gonadtropin females

Answer 22

Follicle stimulating hormone
Ovaries to secrete oestrogen

Question 23

What is an oestrous cycle?

Answer 23

It occurs when females ovulate and can be impregnated. If not impregnated mammals reabsorbed the endometrium

Question 24

Gametogeneis

Answer 24

Formation of mature Gammys by the reproduction glands

Question 25

Spermatogenesis

Answer 25

Mature, haploid sperm are produced from the germinal epithelium in the seminiferous tubules for the testis

Question 26

Phases of spermatogenesis

Answer 26

1. Multiplying phase 2. Growth phase 3. Reduction phase 4. Different differentiation phase

Question 27

Enzyme in the acrosome

Answer 27

Hydrolytic enzyme

Question 28

Define oogenesis

Answer 28

Production of mature, haploid eggs in the molecules of the ovary

Question 29

Phases of oogenesis

Answer 29

1. Multiplying phase 2. Growth phase 3. Reduction and maturity phase

Question 30

What happens to the full haploid nuclei in the reduction and maturity phase?

Answer 30

One forms the nucleus and the other three degenerate

Question 31

Where does the mature GF move to?

Answer 31

Surface of the ovary

Question 32

Define ovulation

Answer 32

Release of a mature egg from a GF in the ovary every 28 days

Question 33

What does your corpus luteum produce?

Answer 33

Oestrogen and progesterone

Question 34

What human causes the GF to rupture?

Answer 34

Neutralising hormone

Question 35

Define menopause

Answer 35

Ovary stop producing oestrogen and progesterone

Question 36

What treatment can women undergo during menopause?

Answer 36

Hormone replacement therapy

Question 37

What develops the placenta?

Answer 37

Chorion

Question 38

Functions of the placenta

Answer 38

1. Oxygen and dissolved food substances 2. Fetal waste products of metabolism 3. Maternal antibodies 4. A barrier 5. Secretes estrogenized

Question 39

What does progesterone prevent?

Answer 39

Ovulation and administration

Question 40

What hormone is found in the pregnancy chest?

Answer 40

Human chorionic Gonadtropin (HCG)

Question 41

Functions of the amniotic fluid

Answer 41

1. Support developing fetus 2. Cushions and protects 3. Provides a medium for breathing and swallowing movements to be practice 4. Holds fetal urine 5. Protects the fetus against changes in temperature and dehydration

Question 42

Functions of the umbilical cord

Answer 42

1. Umbilical arteries - leave and Carey‘s waist 2. Umbilical vein - enters and brings nutrients

Question 43

Colostrum

Answer 43

Watery pre-milk found

Question 44

What contractions prepare someone for labour?

Answer 44

Braxton-Hicks

Question 45

What hormone promotes the contraction of the uterine wall?

Answer 45

Oxytocin

Question 46

Define pollination

Answer 46

Transfer pollen from an anther to a stigma, enabling fertilisation and reproduction

Question 47

Function of fruit

Answer 47

1. Contain and protect seeds 2. Help disperse seeds from parent plant

Question 48

Define phenotypic

Answer 48

C or observe

Question 49

Define genotypes

Answer 49

Actual genetic combination

Question 50

Define grafting

Answer 50

Technique whereby tissues from one plant are in certain into those of another plant to form two sets

Question 51

Define cultivar

Answer 51

Plants or gripping of plants that are selected for desirable characteristics that can be maintained by propagation

Question 52

Define micro propagation

Answer 52

Process whereby a small amount of plant tissue is cultured in a growing medium to produce a callous which is a shapeless clump of cell

Question 53

What do new varieties of food need to be?

Answer 53

• higher yield than the present • resistant to pest and diseases • drought resistant and regionally adapted • use soil nutrients more efficiently

Question 54

Define genetic engineering

Answer 54

Process of taking a gene out of one organism and putting it in the DNA of another

Question 55

Herbicide

Answer 55

Chemical that kills herbs and weed

Question 56

Hybrid crops

Answer 56

Crops that are produced by cross pollinating to inbred plants of deem genotypes

Question 57

Polypoid plants

Answer 57

Containing more than two homologous set of chromosomes

Question 58

How is a polyploid plant formed?

Answer 58

• disturbance in mitosis or meiosis • siege treated with a chemical

Question 59

Advantages of polyploid plant

Answer 59

• forms seedless varieties fruit • plants bigger and more robust • flowers larger • fruit bigger

Question 60

Define a Seabank

Answer 60

Facility used to store seeds of various wild plants and crops in an effort to maintain by diversity