Male Genitourinary System

Question 1

the Penis system

Answer 1

penis is composed of three cylindrical columns of erectile tissue:
two corpora cavernosa on the dorsal side and the

corpus spongiosum ventrally

Question 2

scrotum

Answer 2

loose protective sac that is a continuation of the abdominal wall

Question 3

scrotal wall

Answer 3

consists of thin skin lying in folds, or rugae,

Question 4

cremaster and dartos muscles

Answer 4

control the size of the scrotum by responding to ambient temperature.

This is to keep the testes at the best temperature for producing sperm: 3°C below abdominal temperature.

Question 5

dartos muscle

Answer 5

also contracts, causing the scrotal skin to wrinkle.

When it is warmer, these muscles relax, the scrotum lowers, and the skin looks smoother.

Question 6

lymphatic vessels

Answer 6

scrotal surface drain into the inguinal lymph nodes, whereas those of the testes drain into the abdomen.

Abdominal lymph nodes are not accessible to clinical examination.

Question 7

Developmental Considerations

Answer 7

During gestation, the testes develop in the abdominal cavity near the kidneys.

During the later months of gestation, the testes migrate, pushing the abdominal wall in front of them and dragging the vas deferens, the blood vessels, and nerves behind.

The testes descend along the inguinal canal into the scrotum before birth.

Question 8

stage one of developmental

Answer 8

pubic hair; No pubic hair; fine body hair on abdomen

penis; size and proportion are the same as during childhood

Question 9

stage two of developmental

Answer 9

pubic hair; Few straight, slightly darker hairs at base of penis are long and downy

penis; Little or no enlargement

scrotum; Enlargement of testes and scrotum; scrotal skin reddens and changes in texture

Question 10

stage three

Answer 10

pubic hair Sparse growth over entire pubis; hair is darker, coarser, and curly

penis Enlargement

scrotum; Further enlargement

Question 11

stage four

Answer 11

pubic hair Thick growth over pubic area but not on thighs; hair coarse and curly

penis Continued enlargement in length and diameter, with development of glans

scrotum Testes almost fully grown;

Question 12

stage five

Answer 12

pubic hair Growth spread over medial thighs, although not yet up toward umbilicus; after puberty, pubic hair growth continues until the mid-20

penis Adult size and shape

scrotum Adult size and shape

Question 13

Circumcision

Answer 13

elective surgical procedure to remove all or part of the foreskin (prepuce) from the penis, usually performed on newborn males.

Question 14

subjective data

Answer 14

1. Frequency, urgency, and nocturia
2. Dysuria
3. Hesitancy and straining
4. Urine colour
5. Past genitourinary history
6. Penis: pain, lesion, discharge
7. Scrotum: self-care behaviours, lump
8. Sexual activity and contraceptive use
9. STI contact
10. STI risk reduction