Parts Of Urinary System

Question 1

Describe what a ureter is. How many is there ?

Answer 1

Moves urine form kidney to bladder

2

Question 2

Name the three layers of the ureter from inside - out.

Answer 2

1. Mucosa - transitional epithelium
2. Muscularis - smooth muscle
   - propels urine into bladder
   - contracts in response to stretch
3. Adventitia - outer fibrous connective tissue

Question 3

What is the urinary bladder?

Answer 3

Muscular sac for temporary urine storage

Question 4

Where is the urinary bladder located for males/females ?

Answer 4

Males - prostate gland inferior to bladder neck

Female - anterior to vagina and uterus

Question 5

The urinary bladder is ________ , which means it’s on pelvic floor posterior to public symphysis

Answer 5

Retroperitoneal

Question 6

What does trigone mean? What happens in this region?

Answer 6

• The smooth triangular area outlined by opening of ureter & urethra
• infections

Question 7

What are the layers of the urinary bladder wall?

Answer 7

• mucosa : transitional epithelial
• detrusor muscle: 3 layers of smooth muscle
• fibrous adventitia: peritoneum

Question 8

How big is the urinary bladder? And how much grime can it hold?

Answer 8

12 cm - 500 ml

Can even hold twice that if necessary

Can burst if over distended

Question 9

What is the urethra and what does it do? What kind of tissue is it mostly ?

Answer 9

Muscular tube that drain urinalysis bladder.

Pseudostratified columnar epithelium

Question 10

What are the two sphincters of the urethra ?

Answer 10

Internal :

involuntary muscle at bladder-urethra junction

Contracts to open

External:

Voluntary (skeletal) muscle surrounding urethra as it passes through the pelvic floor

Question 11

How long is the female urethra ? What is it bound to?

Answer 11

3-4 cm

Bound to anterior vaginal wall

Question 12

What is the external urethra orifice? Where is it located ?

Answer 12

Opening of the urethra in females/males - urine is ejected from here

Female
Located: anterior to vaginal opening ; posterior to clitoris

Male
Located: tip of penis

Question 13

The male urethra carries ____ & _____

Answer 13

Semen & urine

Question 14

Name the three names region of the male urethra. Describe them.

Answer 14

Prostatic urethra (2.5 cm) - within prostate gland

Membranous urethra: (2cm) runs through urogenital diaphragm

Spongy urethra (15 cm) - passes through penis ; opens via external urethral orifice