Which hormone, when at lower levels, decreases water permeability in the distal convoluted tubule ...

Which hormone, when at lower levels, decreases water permeability in the distal convoluted tubule and the collecting duct?
 
  A) Antidiuretic hormone B) Epinephrine
  C) Aldosterone D) Thyroxine

Question 2

Additional collisions with objects inside a vehicle that become missiles when the vehicle abruptly stops are an example of:
 
  A) rear-impact collisions. B) secondary collisions.
  C) rotational collisions. D) primary collisions.

Question 3

The right atrium receives blood from the head and neck via which vessel?
 
  A) Ascending aorta B) Inferior vena cava
  C) Descending aorta D) Superior vena cava