Find $$\left| A _ { 1 } \cup A _ { 2 } \cup A _ { 3 } \cup A _ { 4 } \right| \text { if each set } A _ { i }$$

question 21

Short Answer

Find $$\left| A _ { 1 } \cup A _ { 2 } \cup A _ { 3 } \cup A _ { 4 } \right| \text { if each set } A _ { i }$$ has 150 elements, each intersection of two sets has 80 elements, each intersection of three sets has 20 elements, and there are no elements in all four sets.

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Definitions:

Glomerulus

A network of capillaries located in the beginning of a nephron in the kidney where blood filtration takes place.

Vasa Recta

Specialized capillary that extends from the cortex of the kidney into the medulla and then back to the cortex.

Peritubular Capillary

Capillary network located in the cortex of the kidney; associated with the distal and proximal convoluted tubules.

Nephron

The basic structural and functional unit of the kidney, responsible for water and electrolyte balance.