Bio 122- Reproductive System

Prostate

will eventually become a problem, most are lucky to just pass before then

on next exam

 will be questions on anatomy, labeling too  ( the image on test will be one or a few on the slideshow) (don’t worry about top view, i think its the second one)

The fructose

sugar (in this context, it is basically food for sperm

Spermatogenesis

beginning of meiosis (male puberty, 12-13)

All humans start with

proto vaginal structure,

in males, proto vaginal structure

fuses in the middle, causes seem

The amount of testosterone that develops and goes decided the gender

Because eggs are developed while the baby is still inside the mothers

 the eggs the baby develops were actually offspring choices for the mother 

Males do have mammary glands, but

they only work in females.

mammary glands,

modified sweat glands that allow for milk feeding 

Don't worry about slide before the female sex hormones,

that anatomy will not be tested on 

cervical mucus thickness

 prepare to seal off uterus if zygote happens  

Irritable male syndrome

likely a pseudoscience

The functions of the sex cells

•Production of gametes

•Fertilization

•Development and nourishment of new individuals

•Production of sex hormones

Formation of Sex Cells

Gametes form from Meiosis

Gametes

-  sex cells

  -  sperm in males

  -  oocytes (eggs) in females

oocytes

eggs

Meiosis

special type of cell division that leads to formation of sex cells

special type of cell division that leads to formation of sex cells

23 chromosomes

•Fertilization:

union of sperm and oocyte

•Zygote:

-  what develops after fertilization

  -  develops into an embryo 3-14 days after

       fertilization

•Embryo:

14-56 days after fertilization

•Fetus:

56 days after fertilization

The functions of Male Reproductive System

•Produce sperm cells (sex cells)

•Produce male sex hormones

•Transfer sperm cells to female

Male Reproductive Organs

Scrotum

Testes

Epididymis

Ductus deferens

Scrotum

contains testes

Scrotum

dartos muscle that moves scrotum and testes

-  close to and away from body depending on temp.

Scrotum

sperm must develop at temp

less than body temp

Testes

-  primary male reproductive organ

Testes

-produce 

sperm

Testes

located in

scrotum

Testes

contain seminiferous tubules: 

where sperm is produced

Testes

  -  contain interstitial cells: 

secrete testosterone

Testes

contain germ cells

begin of sperm cell

Testes

-  contain Sustentacular cells

nourish germ cells and produce hormones

Epididymis is

thread-like tubules on side of each testis

Epididymis

where seminiferous tubules

empty new sperm

Epididymis

where sperm continue to mature develop

ability to swim and bind to oocytes

•Ductus deferens:

“vas deferens”

Ductus deferens

extends from

epididymis and joins seminal vesicle

Ductus deferens:

is _______

cut during a vasectomy