Question

question 54 when na+ is resorbed by the kidneys water follows the na+ and the water is also resorbed blood volume decreases the concentration of water in the blood decreases all of the above question 55 corticotropin releasing hormone (crh) is secreted by the adrenal cortex pancreas posterior pituitary anterior pituitary hypothalamus

Explanation:

For Question 54, water follows sodium during re - absorption in kidneys due to osmosis, increasing blood volume and water concentration in blood. So only the first option is correct. For Question 55, corticotropin - releasing hormone (CRH) is secreted by the hypothalamus which stimulates the anterior pituitary to release adrenocorticotropic hormone.

Answer:

Question 54: water follows the Na+ and the water is also resorbed
Question 55: hypothalamus