Lab Male and Female Reproductive Flashcards
External organs of the male reproductive system:
Penis
Testes
Epididymi
Internal reproductive organs
Ductus deferens
Urethra
Ejaculatory duct
And 3 glands: bulbourethral, seminal vesicles, prostate gland
3 types of glands in the penis:
Prostate gland
Bulbourethral gland
Seminal vesicles
Describe the penis structure:
An elongated tubular structure, composed of the shaft, glans, urethra, erectile tissue and foreskin
The 3 parts of the penis are:
- main portion: elongated
- glans: distal enlarged end aka the head
- urethra: tube passing through, connecting at the bladder
Define erectile tissue.
Soft spongy tissue filled with spaces called sinuses.
•there are three sections around the urethra: 2 corpora canvernosa, 1 corpus spongiosum
Corpora cavernosa
Erectile tissue
•making up two large sections of the shaft
•located on the dorsal surface
•sinuses fill with blood during arousal, causing erection
Corpus spongiosum
- one small section surrounding the urethra
- forms the internal tissue of the glands
- found on ventral surface
Prepuce
Aka foreskin
•at birth the glans is covered with skin called prepuce
•removed by circumcision
Testes are located:
Lateral and posterior to the penis, within the scrotum.
Scrotum
Pouch structure composed of smooth muscle and skin
Tunica albuginea
Connective tissue sheath surrounding each testis
What makes up a testis?
Divided into small units called lobules
•inside lobules are seminiferous tubules and interstitial cells
Seminiferous tubules
Small coiled tubes
•located in the lobules of the testes
•sperm production occurs here
Interstitial cells
Small cells located between the seminiferous tubules
•aka leydig cells
•secretes testosterone
Epididymi
- each is attacked to a testis
- made if head, body and tail
- sperm storage and maturation happens here
- after leaving epididymis, sperm is capable of fertilizing and oocyte
Ductus epididymis
Long coiled tube stretching through the epididymi connecting to the ductus deferens
Ductus deferens
- connected to epididymi
- passes through the spermatic cord and enters body cavity
- connected to the ejaculation duct in the prostate
- acts as pathway and storage for sperm
Ampulla
- means widening
* enlarged end of ductus deferens