Lecture 30

Question 1

What is transitional epithelium?

Answer 1

Stratified rounded cells that flatten when stretched. Good for protection.

Question 2

Where is the Ureter located?

Answer 2

Arsise from each renal pelvis at each hilum.

Descend retroperitoneally through abdomen, vertically from hila.

Question 3

Structure of the Ureter/

Answer 3

Slender tube that carry urine from the kidney to bladder

Question 4

What form of motility carries the urine through the ureter to the bladder?

Answer 4

Peristaltic waves.

Question 5

What are the layers of the ureter?

Answer 5

Transitional epithelium
Muscularis - Inner longitudinal and outer circular
Adventitia - outer covering of fibrous connective tissue

Question 6

What structures are on the inner surface of the ureter?

Answer 6

Folded protective protein plaque.

Question 7

How many ureters do we have?

Answer 7

2

Question 8

Where do the Ureters run?

Answer 8

Obliquely through the wall of the bladder at it’s posterior/lateral corners.

Question 9

What prevents backflow in the ureters?

Answer 9

The ureters act as sphincter: t

Question 10

What is the bladder?

Answer 10

A collapsible muscular sac that stores and expels urine.

Question 11

Features of the bladder?

Answer 11

When empty the bladder collapses along folds (rugae).

When full the bladder expands without great increase in pressure.

Question 12

Function of the bladder wall>?

Answer 12

Contains muscle or the expulsion of urine.

Question 13

What is the Trienge? -

Answer 13

triangular region between 2 openings of entry of ureters and 1 opening for urethra

Question 14

How does the bladder change as it fills compared to when it’s empty?

Answer 14

Becomes more spherical and extends superiorly into abdominal cavity.

Question 15

Location of bladder in males?

Answer 15

Anterior to rectum and superior to prostate gland.

Question 16

Location of Female Bladder?

Answer 16

Anterior to the vagina and uterus

Question 17

Structure of the Urinary bladder wall?

Answer 17

Folded into rugae for expansion.
Mucosa of transitional epithelium.
Thick smooth muscle layer call the detrasour.

Question 18

How does the epithelium change in the urethra?

Answer 18

Transitional near bladder - columnar - stratified squamous near external opening.

Question 19

What is the urethra?

Answer 19

A thin walled muscular tube that Drains urine from the bladder out of the body. .

Question 20

What is the role of muscular glands in the urethra?

Answer 20

Protect epithelium from urine.

Question 21

How is the male urethra different from the female urethra?

Answer 21

Maes in longer, part of reproductive system, contains three regions; prostatic, membranous, and penile.

Question 22

What is the internal urethral sphincter?

Answer 22

Junction between bladder and urethra, is a destaur muscle under involuntary control.

Question 23

What is the external urethral sphincter?

Answer 23

Located where urethra passes through the urogenital diaphragm, is skeletal muscle under voluntary control.

Question 24

Process of urination?

Answer 24

Bladder fills and expands, AP stimulated from stretch receptors and sent to brain, urgency increases as signals increase. Internal sphincter releases, followed by conscious relaxation of external sphincter.