Osmoregulation (low H2O Conc/ High Osmotic Pressure)

Question 1

Receptor (H2O concentration low/osmotic pressure high)

Answer 1

Osmoreceptors in hypothalamus

Question 2

Modulator (H2O concentration low/osmotic pressure high)

Answer 2

Hypothalamus stimulates posterior pituitary gland to release more anti-diuretic hormone (ADH)

Question 3

Effector (H2O concentration low/osmotic pressure high)

Answer 3

-DCT (distilled convoluting tubule) and CD (collecting ducts)

Question 4

Response (H2O concentration low/osmotic pressure high)

Answer 4

-Increased permeability of DCT and CD
-more water absorbed
-increased H2O concentration and lowered osmotic pressure

Question 5

Feedback (H2O concentration low/osmotic pressure high)

Answer 5

Negative

Question 6

Stimulus (H2O concentration low/osmotic pressure high)

Answer 6

Low H2O concentration/high osmotic pressure