Bio Mega Quiz #7 (pt. 1) -male reproductive system

what does the reproductive system produce

gametes

what are gametes

eggs and sperm

for females the reproductive system is a

receiving and support system

for males the reproductive system is a

delivery system

genitals def

reproductive organs

where do males produce sperm

within testes

where do women produce eggs

within ovaries

where do men transport sperm

in ducts

where do women transport eggs? destination

in uterine tubes

transported to uterus

what does the penis deliver sperm to

the vagina

what are the functions of the vagina

-transports menstrual fluid to exterior

-acts as birth canal

Uterus function

allows fertilized eggs to develop

babies grow up in the moms

uterus

**NOT BELLY

after birth, breast tissue is increased and the breast provides...

nourishment

what do the testes and ovaries produce

sex hormones

these sex hormones bring about...

masculinization or femeninization

puberty

time period in which a child becomes a sexually competent adult

when does sexual maturity typically occur

between 10 and 14 in girls; 12 and 16 in boys

what happens at the completion of puberty

the individual is capable of producing children

how many chromosomes do we have

46 (23 pairs)

meiosis

- chromosomal reduction

*process of going from 46 chromosomes to 23

zigot

-fertilized egg

what is the travel of sperm through the reproductive system

testes-> epididymides->vasa deferentia->seminal vesical->prostate gland->urethra->Bulbourethral glands->penis

testes function

produce sperm and sex hormones

epididymides function

ducts where sperm mature and some are stored

vasa deferentia function

conduct and store sperm

seminal vesicles function

contribute nutrients and fluid to semen

prostate gland function

contributes fluid to semen

urethra function

conducts sperm

bulbourethral glands

contributes mucus-containing fluid to semen

penis function

organ of sexual intercourse

erectile tissue of penis

Spongy tissue that fills with blood during before ejaculation

seminiferous tubules have

coils - which increase surface area

one cell =

4 functional sperm

parts of sperm

acrosome, head, middle piece, tail

acrosome

A vesicle at the tip of a sperm cell that helps the sperm penetrate the egg

middle piece contains

mitochondria

testosterone

main sex hormone in cells

what is testosterone essential for

normal development and functioning of male sex organs

what does testosterone bring about and maintain

the males secondary sex characteristics that develop puberty

what are male characteristics that come from testosterone

-males are generally taller than females

-broad shoulders

-longer legs relative to trunk length

-deeper voices due to larger larynx with longer vocal chords

who produces testosterone and estrogen

both males and females (they just produce more of their specific hormone)

spermatogenesis

process of 46 chromosome -> meiotic division -> 4 sperm with 23 chromosomes each