Question

question 40
which of the following stimulates the release of catecholamines?
a signal from the sympathetic nervous system
adrenocorticotropin hormone (acth)
corticotropin releasing hormone (crh)
an increase in blood solutes
a, b, and c

question 41
an increase in water concentration in the blood can result in
an increase in blood volume
an increase in blood pressure
an increase in renin release
a and b

Explanation:

For Question 40: The sympathetic nervous system stimulates the release of catecholamines. ACTH stimulates the release of cortisol, CRH stimulates the release of ACTH, and an increase in blood solutes is related to osmoregulation rather than catecholamine release.
For Question 41: An increase in water concentration in the blood increases blood volume. An increase in blood volume can lead to an increase in blood pressure. Renin release is mainly related to low - blood pressure or low - blood volume situations, not directly to an increase in blood water concentration.

Answer:

Question 40: a signal from the sympathetic nervous system
Question 41: A and B