gamete formation

Question 1

what do gametes start as?

Answer 1

diploid

Question 2

hat do gametes end as?

Answer 2

haploid

Question 3

what comes first meiosis or mitosis?

Answer 3

mitosis then meiosis 1 and 2

Question 4

what is the 4th stage of gamete production?

Answer 4

maturation

Question 5

what are homologous chromosome pairs?

Answer 5

chromosome arms begin to pair from the clustered telomeres and ends when synaptonemal complex or linear element assembly is complete.
(mom and dad)

Question 6

does a diploid primodial follicle mature?

Answer 6

in response to GSA

Question 7

when does meiosis 2 complete?

Answer 7

after fetilization

Question 8

when does mitosis start for males?

Answer 8

in utero-stops after birth

Question 9

what is the size of an egg?

Answer 9

500 micrometers

Question 10

what is recombination/cross-over?

Answer 10

homologous pairs sharing DNA

Question 11

how many combos of DNA is there?

Answer 11

8.3 billion

Question 12

what does the acrosome of a sperm consist of?

Answer 12

produces enzymes to break down the corona radiata

Question 13

what does the mid piece of a sperm consist of?

Answer 13

mitochondria to make ATP

Question 14

what does the head of a sperm consist of?

Answer 14

where DNA is stored

Question 15

what does the tail of a sperm do?

Answer 15

used to swim-motility

Question 16

what are the secondary characteristics of testosterone?

Answer 16

-hair growth
-deposition of muscles
-adams apple/voice deepening

Question 17

what adds fluid to the sperm in testis?

Answer 17

-seminal vesticle
-prostate gland
-bulbourethral gland

Question 18

what are the columns if the erectal tissues/ bulk of the body?

Answer 18

-corpus cavernousum
-corpus spongiosum

Question 19

where do the testis develop?

Answer 19

in the abdominal wall during utero

Question 20

when/where do the testis dissent?

Answer 20

at 26 weeks they descend to the scrotum along the gubernaculum

Question 21

what is the opening from internal abdominal to external the testis go through?

Answer 21

inguinal canal

Question 22

what is the average semen contents?

Answer 22

2-5mL
N200 million cells per ejaculate
secretions: slightly alkaline, prostaglandins, nutrients

Question 23

what do the erectile tissues consist of?

Answer 23

-connective tissues
-smooth muscle
-small blood vessels

Question 24

how does an erection occur?

Answer 24

-nitric acid stimulates parasympathetic nerves
-relaxation of smooth muscles (arteries dilate and veins constrict)
-blood accumulation

Question 25

what are ejactulation and male orgasm a response of?

Answer 25

sympathetic

Question 26

what are the pros to circumcision?

Answer 26

-results in lower transmission rates of STD's

Question 27

what are the cons to circumcision?

Answer 27

-pain -loss of sensation -removal of choice

Question 28

how many people are circumcized?

Answer 28

15% (americans, jewish, muslim)

Question 29

what secretes estrogen/progesterone if fertilization occurs?

Answer 29

corpus lutem

Question 30

what is HCG?

Answer 30

human chorionic gonadotrophin -produced by egg attached to uterine wall to signal corpus luteum

Question 31

when does the placenta take over giving nutrients over the corpus lutem?

Answer 31

2-3 months

Question 32

what does the fimbrae do?

Answer 32

gathers the egg from the uterus to transfer to the Fallopian tube

Question 33

what are the female holes from back to front?

Answer 33

anus, vaginal opening, urethral opening, clitoris

Question 34

when is the menstrual phase?

Answer 34

day 1-7

Question 35

when is the follicular phase?

Answer 35

day 7-14

Question 36

when is the luteal phase?

Answer 36

day 14-21

Question 37

when is the corpus albicans phase?

Answer 37

day 28+

Question 38

when does ovulation typically occur?

Answer 38

on day 14