Male Reproductive Tract Flashcards
Name the external structures of the male genitalia
- Penis
- Scrotum
- Urethra
- Skin
What are the internal male genitalia structures?
- epididymis
- vas deferens
- testes
- pampiniform
What is the function of the testes?
Spermatogenesis, maturation and storage
How many sperm are produced daily?
290 million a day
Why are testes situated externally?
Optimum temperature for sperm is cooler than internal body temperature
Increased temperature causes DNA damage so scrotum holds testes externally
Outline the testicular blood supply
Internal iliac artery supplies the testicular arteries and the pampiniform plexus
What is the significance of the pampiniform plexus?
Provides a large surface area to keep the testes cool
What is the epididymis?
A coiled duct situated behind the testes
What is the role of the epididymis?
Stores and transports sperm
Which components of the spermatic cord transverse the inguinal canal?
Vas deferens
testicular artery
pampiniform plexus
Describe the structure of the prostate gland
Prostate gland is a fibro-glandular structure in the shape of an inverted cone
Situated at the base of the bladder
What is the function of the prostate?
Synthesises and secretes prostatic acid and prostate specific antigens for the seminal fluid
- nourishes and protects sperm
Which structure passes through the prostate?
Ureter passes through prostate from the base to the apex
What is the incidence of Benign Prostatic Hyperplasia?
BPH is seen in 50%, 60%, and 90% of 50, 60, and 90 year olds respectively
occurs within the transitional zone of the prostate
- poor stream
- difficulty peeing
What is the role of seminal vesicles?
Secrete alkaline fluid in seminal fluid
located above prostate
