Anatomy exam 3 (male reproductive)

Male functions

Latent development (at puberty)

essential for survival of species

produce gametes (sperm)

produce male hormone (secondary sexual characteristics)

not essential for life

enhance the quality of life

Primary organ

testes

Ducts

Epididymis

vas deferens

ejaculatory duct

urethra

glands

prostate

seminal vesicle

urethra

Tunica Albuginea

outer layer of the testes

Septa

fascia is separated into tubes

seminiferous tubules

1-3 are located in each lobule

location for sperm development by the meiosis of spermatogenesis

tubules are soil cords until puberty when the develop lumens

tubules empty into

Interstitial cells

produce hormone (outer layer)

Spermatogenesis

FHS (follicle stimulating hormone) from pituitary

Testosterone from leydig (interstitial) cells of testes

secretion from Sertoli cells

Subtentacular cells of testes

nourishing development

testes barrier

establish blood

Sperm

23 chromosomes (not pairs)

Head of sperm

Nucleus

Acrosome (lysosome)- will puncture female egg

Mid-piece of sperm

base of tail

Mitochondria (produces ATP because they have a long journey)

Tail of sperm (push sperm to swim

long flagellum

Cremaster muscle

skeletal muscle

contracts and pulls the ball close to the body to warm up the testes

relaxes and drops the ball to cool down the testes (to stay away from the body)

Dartos muscle

smooth muscle

located in the scrotal wall

when cold contracts and creates wrinkles to help warm up

when hot relaxes and helps to cool down the testes

upper abdomen

place of development for testes

Spermatic cord

Vas deferens

Testicular artery

Papiminiform plexus of penis

illoinguinal nerve

cremaster muscle

Epididymis

Mature sperm- stored for approximately 20 days

Recycle the damaged sperm

Vasectomy

to tie the Vas Deferens

Male urethra

Prostatic Urethra

Membranous Urethra

Penile Urethra

Prostate gland

located below the bladder

secretes a milky white fluid that makes up 40% of semen

seminal vesicle

located behind the bladder

secretes a yellow fluid that makes up about 60% of semen

Bulbourethral gland (cowper’s gland)

located in the urogenital diaphragm

secretes prior to ejaculation

shaft has 3 cylinders

2 corpus cavernosa

1 corpus songiosum

sperm journey

epididymis

vas deferens

ejaculatory duct

prostate urethra

membranous urethra

penile urethra

testes

produce sperm

produce hormone

formation of ejaculatory duct

vas deferens and seminal vesicle