The Urinary System

Question 1

List two hormones produced in the kidney

Answer 1

Erythropoietin and Renin

Question 2

How would you define a renal lobe?

Answer 2

a medullary ray and its surrounding cortical tissue

Question 3

The projection of each medullary pyramid into the lumen of a minor calyx is called

Answer 3

Renal papillae

Question 4

What components of a nephron are contained within a medullary ray?

Answer 4

Collecting Tubules and their accompanying proximal and distal tubules

Question 5

What is normally contained within the urinary space?

Answer 5

Glomerular Filtrate

Question 6

Which portion of the nephron begins at the urinary pole at Bowman’s capsule?

Answer 6

Proximal Tubule

Question 7

What are the three components of the kidney filtration barrier?

Answer 7

capillary endothelium, shared basement membrane, filtration slits (bete. 2ndary processes of podocytes)

Question 8

In which parts of the nephron are intercellular boundaries between epithelial cells not visible with a light microscope?

Answer 8

extensive lateral connections of the proximal tubule

Question 9

List the three parts of the Loops of Henle

Answer 9

1. Descending straight portion of the proximal tubule, the thin segmen, and the ascending straight portion of the distal tubule

Question 10

What are the distinguishing morphological characteristics of he macula densa?

Answer 10

Specialized region in the wall of the distal tubule near the renal corpuscle of its origin

Question 11

Which type of nephron has the longest thin segments of the loop of Henle?

Answer 11

Juxtamedullary nephrons have long loops of Henle that penetrate deep into the medulla (most important in the production of hypertonic urine)