1. Transport Mechanisms In The Renal Tubule

Question 1

What is the definition of reabsorption?

Answer 1

Th movement of a substance from the tubular fluid back into the circulation

Question 2

What is the definition of secretion?

Answer 2

The movement of substances from the blood into the tubular fluid via tubular cells (active transport) or intracellular spaces (passive transport)

Question 3

What is the definition of excretion?

Answer 3

The removal of waste products from the blood and the net result of filtration, secretion and reabsorption of a substance

Question 4

What are the 2 ways solutes can be transported?

Answer 4

Paracellular movement

Transcellular movement

Question 5

What is primary active transport?

Answer 5

An energy dependent process in which substances cross the cell membrane against their concentration and electrochemical gradients

Question 6

What is secondary active transport?

Answer 6

Uses the energy produced from another process for transporting molecules