Topic 16: Urinary System - Bladder and Urethra

Question 1

What is the mucosa of the urinary bladder made of?

Answer 1

• transitional epithelium with Rugae

Question 2

what is the submucosa of the urinary bladder made of?

Answer 2

• none
• lamina propria connected directly to muscularis externa

Question 3

what is the muscularis externa of the urinary bladder made of?

Answer 3

• detrusor muscle - smooth muscle, 3 layers

Question 4

What is the adventitia/serosa of the bladder located?

Answer 4

adventitia - anterior. posterior, inferior
serosa - superior

Question 5

What structures of the urinary bladder are internal?

Answer 5

• ureters and urethra opening

Question 6

What is a trigone?

Answer 6

• triangle of 2 ureters (posterior) and urethra openings

Question 7

What is the structure of a trigone?

Answer 7

• mucosa lacks rugae (smooth) to allow openings to remain in a fixed position

Question 8

what is the mucosa of a urethra made of?

Answer 8

• transitional to stratified squamous

Question 9

What is the muscularis externa of the urethra made of?

Answer 9

• smooth muscle

Question 10

What do urethra contain?

Answer 10

2 sphincters that both surround proximal end of urethra

Question 11

what is the structure of the internal urethral sphincter? (2)

Answer 11

• smooth muscle
• thickening of detrusor muscle at the base of bladder u can hold pee in

Question 12

what is the structure of the external urethral sphincter? (2)

Answer 12

• skeletal muscle
• in urogenital diaphragm

Question 13

what is the function of the urethra in both males and females?

Answer 13

females - transports urine
males - transports urine and semen

Question 14

Please memorize diagram of filtrate movement

Answer 14