Male Reproductive Tract Flashcards Preview

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Flashcards in Male Reproductive Tract Deck (24)
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1
Q

Name the external structures of the male genitalia

A
  • Penis
  • Scrotum
  • Urethra
  • Skin
2
Q

What are the internal male genitalia structures?

A
  • epididymis
  • vas deferens
  • testes
  • pampiniform
3
Q

What is the function of the testes?

A

Spermatogenesis, maturation and storage

4
Q

How many sperm are produced daily?

A

290 million a day

5
Q

Why are testes situated externally?

A

Optimum temperature for sperm is cooler than internal body temperature

Increased temperature causes DNA damage so scrotum holds testes externally

6
Q

Outline the testicular blood supply

A

Internal iliac artery supplies the testicular arteries and the pampiniform plexus

7
Q

What is the significance of the pampiniform plexus?

A

Provides a large surface area to keep the testes cool

8
Q

What is the epididymis?

A

A coiled duct situated behind the testes

9
Q

What is the role of the epididymis?

A

Stores and transports sperm

10
Q

Which components of the spermatic cord transverse the inguinal canal?

A

Vas deferens
testicular artery
pampiniform plexus

11
Q

Describe the structure of the prostate gland

A

Prostate gland is a fibro-glandular structure in the shape of an inverted cone
Situated at the base of the bladder

12
Q

What is the function of the prostate?

A

Synthesises and secretes prostatic acid and prostate specific antigens for the seminal fluid
- nourishes and protects sperm

13
Q

Which structure passes through the prostate?

A

Ureter passes through prostate from the base to the apex

14
Q

What is the incidence of Benign Prostatic Hyperplasia?

A

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

15
Q

What is the role of seminal vesicles?

A

Secrete alkaline fluid in seminal fluid

located above prostate

16
Q

What is cryptorchidism?

A

Condition in which one or both of the testes fail to descend from the abdomen into the scrotum

17
Q

What is the purpose of the ejaculatory ducts?

A

Carries sperm in semen through the prostate –> urethra at the seminal coliculus

18
Q

What are the 2 main divisions of the penis?

A

Body and glans

19
Q

What are the 3 cylindrical structures forming the penis?

A

Corpus spongiosum
Corpus cavernosum
urethra

20
Q

What is the purpose of corpus spongiosum expansion?

A

The corpus spongiosum expands distally to form the glans penis

21
Q

Name the erectile tissue

A

Corpus cavernosum fills with blood during an erection

22
Q

Where does the inguinal canal located?

A

Inguinal canal runs from the asis to pubis

23
Q

What traits allow the identification of prostatic cancer?

A

Prostatic cancer occurs posteriorly in peripheral zone

  • asymetrical
  • craggy
  • unpalpable dips
24
Q

How long is the male urethra?

A

~20cm

longer urethra in men:

  • less UTI
  • STI likely