MSCI 522 Urine and Micturition Report | Liberty University Online Academy

Report
Course MSCI 522 - Principle of Physiology II
Lesson Urine and Micturition



Ureters and bladder

Which of the following contributes to the ow of urine from the renal pelvis to the bladder?




Gravity Gravity

Osmotic gradients

Peristaltic contractions of
ureteral smooth muscle ureteral smooth muscle
Pressure in the renal pelvis




What prevents backwards ow of urine from the bladder into the ureters?




Closure of a fold of bladder Closure of a fold of bladder
mucosa over the ureteric ori ce
Higher pressure of urine in the The oblique angle that the
ureters
wall
The oblique angle that the
ureters pass through the bladder
wall

,Label the main structures shown in this image of the female urinary system.

Detrusor muscle
muscle
External urethral
sphincter

Trigone
Ureter
Ureter opening
Trigone
Urethra




Urethra




What is the thick muscular layer of the bladder wall known as?

, What are the main structures of the male urinary system? Label the image below.

External urethral Internal urethral
sphincter
ori ce
External urethral
sphincter
Internal urethral
sphincter
sphincter

Levator ani muscle
Membranous
urethra urethra

Prostatic urethra
Spongy (penile)
urethra




Compare and contrast the male and female urethras.




Has three named regions. Relatively short (3–4 cm or 1.5 H
inches).
Is involved in reproductive R
functions.
Relatively short (3–4 cm or 1.5 Is
inches).
Relatively long (~20 cm or 8
inches).