Embryology

Question 1

What germ layer gives rise to the urinary system?

Answer 1

intermediate mesoderm

Question 2

the intermediate mesoderm gives rise to 3 kidney systems. What are they and what are their functions?

Answer 2

pronephros = forms the early rudimentary kidneys then disappears by 4th week

mesonephros = another rudimentary kindey system that eventully becomes the wolffian duct

metanephros = forms the difinitive kidney with the uteric bud

Question 3

What two embryonic structures make up the difinitive kidney?

Answer 3

metanephros and the uteric bud

Question 4

What structures in the kidney does the metanephros give rise to?

Answer 4

filtration system:

Glomerulus

Bowman’s capsule

PCT

loop of Henle

DCT

Question 5

What structures in the kidney does the uteric bud give rise to?

Answer 5

collecting system:

Collecting ducts

manjor/minor calyces

renal pelvis

ureters

Question 6

Fill in the blank regarding the aortic arches

Answer 6