Reproduction

Question 1

Order of Sperm production

Answer 1

Teste–>epididymis–>vas deferens–>urethra–> penis

Question 2

What gender reaches sexual maturity first?

Answer 2

Girl (11-13 years) (boys are 14-16)

Question 3

Zygote

Answer 3

A diploid, formed when two haploids (egg and sperm) come together, formed when sperm fertilizes egg

Question 4

Ovaries

Answer 4

produce estrogen+progesterone, filled with follicles, make egg

Question 5

Follicle

Answer 5

Stimulated by FSH to release egg, one bursts per cycle, holds and matures egg until it is ready

Question 6

Fallopian tube/oviduct

Answer 6

Site of fertilization, transports egg after ovulation from ovary to uterus

Question 7

Uterus

Answer 7

muscular organ, lining is thickened each month during follicle stage,If egg is fertilized, it stays in uterine lining, site of development

Question 8

Cervix

Answer 8

Birth canal, closes during pregnancy to keep baby inside

Question 9

Vagina

Answer 9

A muscular tube that connects from Cervix to outside environment

Question 10

Menstruation

Answer 10

Days 1-7, uterine lining, blood, egg, and mucus are shed out through vagina, LH decreases, Corpus Luteus breaks down and stops progesterone

Question 11

Follicle stage

Answer 11

Days 8-15, Estrogen and FSH are produced, uterine lining thickens and follicle matures egg

Question 12

Ovulation

Answer 12

Midway point, 1 day only, Follicle bursts and releases mature egg due to high amounts of estrogen, sudden spike in LH and FSH which immediately decrease after

Question 13

Luteal phase

Answer 13

Days 16-27, Progesterone is produced which causes uterine lining to thicken more, LH causes hole from ovulation to be filled with cells -now called corpus Luteum

Question 14

Identical twins

Answer 14

made from 1 sperm + 1 egg, genetically identical, same placenta and amniotic sac

Question 15

Fraternal

Answer 15

made from 2 sperm + 2 egg, genetically different, 2 different placentas and amniotic sacs

Question 16

Amniotic sac

Answer 16

membrane that surrounds embryo and maintains a sterile environment

Question 17

Amniotic fluid

Answer 17

cushions+protects baby

Question 18

Placenta

Answer 18

Nutrients diffuse across the membrane from Mother to baby and wastes go from baby to mother, Placenta is attached to uterine wall and must remain during pregnancy,

Question 19

Umbilical cord

Answer 19

Connects baby to placenta, transports oxygen

Question 20

Spermogenesis

Answer 20

Meiosis which produces four healthy sperms, each with 23 chromosomes

Question 21

oogenesis

Answer 21

Meiosis which produces 1 healthy egg and 3 polar bodies which get absorbed

Question 22

Order which ovum in produced

Answer 22

Ovary–> fallopian tube–>uterus–>cervix–> vagina

Question 23

Which part of the sperm allows it to move?

Answer 23

Flagella

Question 24

What part of the sperm contains 23 chromosomes?

Answer 24

Nucleus

Question 25

What part of the sperm contains digestive enzymes that allow it to burrow into the egg?

Answer 25

head/acrosome

Question 26

Heat begins to beat, baby is considered a fetus

Answer 26

Trimester 1

Question 27

3 layers of stem cells in a Gastrula

Answer 27

Ectoderm- skin Endoderm-guts and organs Mesoderm- Blood + cardiac system

Question 28

How is a zygote formed

Answer 28

Meiosis

Question 29

How does a zygote go to a morula?

Answer 29

Clevage- a type of mitosis where the cells multiply but the egg stays the same size

Question 30

Differentiation

Answer 30

Occurs after gastrulation, all cells have the same DNA, but different genes are activated in diff cells, giving them different functions

Question 31

Placenta

Answer 31

Formed from Mother and baby tissues, outside of amniotic sac, connected with umbilical cord

Question 32

What regulates the reproductive system?

Answer 32

Hormones

Question 33

Scrotum

Answer 33

Outside of body, holds testes and cooler temps allow for maximum sperm production

Question 34

Vas Deferns and Oviduct both...

Answer 34

Transports gametes VD brings sperm from testes to penis Oviduct brings egg from ovary to vagina

Question 35

Where does fertilization take place

Answer 35

Fallopian tube

Question 36

Where does development and implantation take place?

Answer 36

Uterus

Question 37

How is a human embryo and reproduction in a single celled organism similar?

Answer 37

Both divide by mitosis